Articles | Volume 7, issue 1
https://doi.org/10.5194/esurf-7-147-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-7-147-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 Jan 2019
Research article |
| 31 Jan 2019
| 31 Jan 2019
Glacial limitation of tropical mountain height
Maxwell T. Cunningham
CORRESPONDING AUTHOR
Dept. of Earth and Environmental Sciences, Columbia University, New York, New York 10027, USA
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
Colin P. Stark
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
Michael R. Kaplan
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
Joerg M. Schaefer
Dept. of Earth and Environmental Sciences, Columbia University, New York, New York 10027, USA
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA
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Joseph P. Tulenko, Jason P. Briner, Nicolás E. Young, and Joerg M. Schaefer
Clim. Past, 20, 625–636, https://doi.org/10.5194/cp-20-625-2024, https://doi.org/10.5194/cp-20-625-2024, 2024
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We take advantage of a site in Alaska – where climate records are limited and a former alpine glacier deposited a dense sequence of moraines spanning the full deglaciation – to construct a proxy summer temperature record. Building on age constraints for moraines in the valley, we reconstruct paleo-glacier surfaces and estimate the summer temperatures (relative to the Little Ice Age) for each moraine. The record suggests that the influence of North Atlantic climate forcing extended to Alaska.
Allie Balter-Kennedy, Joerg M. Schaefer, Greg Balco, Meredith A. Kelly, Michael R. Kaplan, Roseanne Schwartz, Bryan Oakley, Nicolás E. Young, Jean Hanley, and Arianna M. Varuolo-Clarke
EGUsphere, https://doi.org/10.5194/egusphere-2024-241, https://doi.org/10.5194/egusphere-2024-241, 2024
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We date sedimentary deposits indicating the southeastern Laurentide Ice Sheet was at or near its southernmost extent from ~26,000 to 21,000 years ago when sea-level was lowest and other climate records indicate glacial conditions. Slow deglaciation began ~22,000 years ago alongside a slow but steady rise in modeled local summer temperature, but significant deglaciation in the region did not begin until ~18,000 years ago when atmospheric CO2 began to rise, signaling the end of the last ice age.
Brandon L. Graham, Jason P. Briner, Nicolás E. Young, Allie Balter-Kennedy, Michele Koppes, Joerg M. Schaefer, Kristin Poinar, and Elizabeth K. Thomas
The Cryosphere, 17, 4535–4547, https://doi.org/10.5194/tc-17-4535-2023, https://doi.org/10.5194/tc-17-4535-2023, 2023
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Glacial erosion is a fundamental process operating on Earth's surface. Two processes of glacial erosion, abrasion and plucking, are poorly understood. We reconstructed rates of abrasion and quarrying in Greenland. We derive a total glacial erosion rate of 0.26 ± 0.16 mm per year. We also learned that erosion via these two processes is about equal. Because the site is similar to many other areas covered by continental ice sheets, these results may be applied to many places on Earth.
Adam C. Hawkins, Brian Menounos, Brent M. Goehring, Gerald Osborn, Ben M. Pelto, Christopher M. Darvill, and Joerg M. Schaefer
The Cryosphere, 17, 4381–4397, https://doi.org/10.5194/tc-17-4381-2023, https://doi.org/10.5194/tc-17-4381-2023, 2023
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Our study developed a record of glacier and climate change in the Mackenzie and Selwyn mountains of northwestern Canada over the past several hundred years. We estimate temperature change in this region using several methods and incorporate our glacier record with models of climate change to estimate how glacier volume in our study area has changed over time. Models of future glacier change show that our study area will become largely ice-free by the end of the 21st century.
Allie Balter-Kennedy, Joerg M. Schaefer, Roseanne Schwartz, Jennifer L. Lamp, Laura Penrose, Jennifer Middleton, Jean Hanley, Bouchaïb Tibari, Pierre-Henri Blard, Gisela Winckler, Alan J. Hidy, and Greg Balco
Geochronology, 5, 301–321, https://doi.org/10.5194/gchron-5-301-2023, https://doi.org/10.5194/gchron-5-301-2023, 2023
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Cosmogenic nuclides like 10Be are rare isotopes created in rocks exposed at the Earth’s surface and can be used to understand glacier histories and landscape evolution. 10Be is usually measured in the mineral quartz. Here, we show that 10Be can be reliably measured in the mineral pyroxene. We use the measurements to determine exposure ages and understand landscape processes in rocks from Antarctica that do not have quartz, expanding the use of this method to new rock types.
Jason P. Briner, Caleb K. Walcott, Joerg M. Schaefer, Nicolás E. Young, Joseph A. MacGregor, Kristin Poinar, Benjamin A. Keisling, Sridhar Anandakrishnan, Mary R. Albert, Tanner Kuhl, and Grant Boeckmann
The Cryosphere, 16, 3933–3948, https://doi.org/10.5194/tc-16-3933-2022, https://doi.org/10.5194/tc-16-3933-2022, 2022
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The 7.4 m of sea level equivalent stored as Greenland ice is getting smaller every year. The uncertain trajectory of ice loss could be better understood with knowledge of the ice sheet's response to past climate change. Within the bedrock below the present-day ice sheet is an archive of past ice-sheet history. We analyze all available data from Greenland to create maps showing where on the ice sheet scientists can drill, using currently available drills, to obtain sub-ice materials.
Colin P. Stark and Gavin J. Stark
Earth Surf. Dynam., 10, 383–419, https://doi.org/10.5194/esurf-10-383-2022, https://doi.org/10.5194/esurf-10-383-2022, 2022
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Landscape erosion is generally considered to take place vertically downward. Here, by writing gradient-driven erosion in Hamiltonian form, we show this is not true. Instead, we find it takes place in two directions simultaneously: (i) normal to the surface and (ii) along rays pointing upstream and either up or down depending on how erosion rate scales with slope. The rays follow the shortest time paths that determine how long it takes for a landscape to respond to changes in external conditions.
Irene Schimmelpfennig, Joerg M. Schaefer, Jennifer Lamp, Vincent Godard, Roseanne Schwartz, Edouard Bard, Thibaut Tuna, Naki Akçar, Christian Schlüchter, Susan Zimmerman, and ASTER Team
Clim. Past, 18, 23–44, https://doi.org/10.5194/cp-18-23-2022, https://doi.org/10.5194/cp-18-23-2022, 2022
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Small mountain glaciers advance and recede as a response to summer temperature changes. Dating of glacial landforms with cosmogenic nuclides allowed us to reconstruct the advance and retreat history of an Alpine glacier throughout the past ~ 11 000 years, the Holocene. The results contribute knowledge to the debate of Holocene climate evolution, indicating that during most of this warm period, summer temperatures were similar to or warmer than in modern times.
Sandra M. Braumann, Joerg M. Schaefer, Stephanie M. Neuhuber, Christopher Lüthgens, Alan J. Hidy, and Markus Fiebig
Clim. Past, 17, 2451–2479, https://doi.org/10.5194/cp-17-2451-2021, https://doi.org/10.5194/cp-17-2451-2021, 2021
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Glacier reconstructions provide insights into past climatic conditions and elucidate processes and feedbacks that modulate the climate system both in the past and present. We investigate the transition from the last glacial to the current interglacial and generate beryllium-10 moraine chronologies in glaciated catchments of the eastern European Alps. We find that rapid warming was superimposed by centennial-scale cold phases that appear to have influenced large parts of the Northern Hemisphere.
Andrew J. Christ, Paul R. Bierman, Jennifer L. Lamp, Joerg M. Schaefer, and Gisela Winckler
Geochronology, 3, 505–523, https://doi.org/10.5194/gchron-3-505-2021, https://doi.org/10.5194/gchron-3-505-2021, 2021
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Cosmogenic nuclide surface exposure dating is commonly used to constrain the timing of past glacier extents. However, Antarctic exposure age datasets are often scattered and difficult to interpret. We compile new and existing exposure ages of a glacial deposit with independently known age constraints and identify surface processes that increase or reduce the likelihood of exposure age scatter. Then we present new data for a previously unmapped and undated older deposit from the same region.
Nicolás E. Young, Alia J. Lesnek, Josh K. Cuzzone, Jason P. Briner, Jessica A. Badgeley, Alexandra Balter-Kennedy, Brandon L. Graham, Allison Cluett, Jennifer L. Lamp, Roseanne Schwartz, Thibaut Tuna, Edouard Bard, Marc W. Caffee, Susan R. H. Zimmerman, and Joerg M. Schaefer
Clim. Past, 17, 419–450, https://doi.org/10.5194/cp-17-419-2021, https://doi.org/10.5194/cp-17-419-2021, 2021
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Retreat of the Greenland Ice Sheet (GrIS) margin is exposing a bedrock landscape that holds clues regarding the timing and extent of past ice-sheet minima. We present cosmogenic nuclide measurements from recently deglaciated bedrock surfaces (the last few decades), combined with a refined chronology of southwestern Greenland deglaciation and model simulations of GrIS change. Results suggest that inland retreat of the southwestern GrIS margin was likely minimal in the middle to late Holocene.
Roberto Fernández, Gary Parker, and Colin P. Stark
Earth Surf. Dynam., 7, 949–968, https://doi.org/10.5194/esurf-7-949-2019, https://doi.org/10.5194/esurf-7-949-2019, 2019
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This paper describes the case of a meandering bedrock river with loose sediment on the bed. In such rivers, the sediment hits and erodes the bed as it moves with the flow. We did experiments in a laboratory flume to identify the areas where the sediment moves and those where it deposits. We discovered that the size and location of those areas change with the amount of sediment in the channel and its curvature. The fluctuations of sediment cover over the bed drive the erosion potential.
Joshua M. Maurer, Summer B. Rupper, and Joerg M. Schaefer
The Cryosphere, 10, 2203–2215, https://doi.org/10.5194/tc-10-2203-2016, https://doi.org/10.5194/tc-10-2203-2016, 2016
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Here we utilize declassified spy satellite imagery to quantify ice volume loss of glaciers in the eastern Himalayas over approximately the last three decades. Clean-ice and debris-covered glaciers show similar magnitudes of ice loss, while calving glaciers are contributing a disproportionately large amount to total ice loss. Results highlight important physical processes affecting the ice mass budget and associated water resources in the Himalayas.
Shaun R. Eaves, Andrew N. Mackintosh, Brian M. Anderson, Alice M. Doughty, Dougal B. Townsend, Chris E. Conway, Gisela Winckler, Joerg M. Schaefer, Graham S. Leonard, and Andrew T. Calvert
Clim. Past, 12, 943–960, https://doi.org/10.5194/cp-12-943-2016, https://doi.org/10.5194/cp-12-943-2016, 2016
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Geological evidence for past changes in glacier length provides a useful source of information about pre-historic climate change. We have used glacier modelling to show that air temperature reductions of −5 to −7 °C, relative to present, are required to simulate the glacial extent in the North Island, New Zealand, during the last ice age (approx. 20000 years ago). Our results provide data to assess climate model simulations, with the aim of determining the drivers of past natural climate change.
C. Hibert, C. P. Stark, and G. Ekström
Nat. Hazards Earth Syst. Sci., 15, 1265–1273, https://doi.org/10.5194/nhess-15-1265-2015, https://doi.org/10.5194/nhess-15-1265-2015, 2015
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We carry out a study of the seismic signals generated by the devastating Oso-Steelhead landslides. We invert the long-period seismic signals generated by the first main event and obtain estimates of its trajectory, kinematics and mass. No distinct long-period surface waves were recorded for the second failure, which prevents inversion for its source parameters. However, from the comparison of the energy of the short-period waves generated by both events, we can estimate the volume of the second.
L. Zhang, G. Parker, C. P. Stark, T. Inoue, E. Viparelli, X. Fu, and N. Izumi
Earth Surf. Dynam., 3, 113–138, https://doi.org/10.5194/esurf-3-113-2015, https://doi.org/10.5194/esurf-3-113-2015, 2015
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The saltation-abrasion model captures bedrock incision due stones striking bedrock. We present the Macro-Roughness-based Saltation-Abrasion-Alluviation (MRSAA) model, which tracks spatiotemporal variation of both bedload and alluvial thickness. It captures migrating waves of incision upstream and alluviation downstream. We apply it to incision problems not captured by saltation-abrasion, including the response to alluviation and stripping, and a simplified graben with uplift and subsidence.
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Earth Surf. Dynam., 12, 727–745, https://doi.org/10.5194/esurf-12-727-2024, https://doi.org/10.5194/esurf-12-727-2024, 2024
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Ice cliffs are melt hot spots that increase melt rates on debris-covered glaciers which otherwise see a reduction in melt rates. In this study, we show how surface runoff streams contribute to the generation, evolution, and survival of ice cliffs by carving into the glacier and transporting rocky debris. On Kennicott Glacier, Alaska, 33 % of ice cliffs are actively influenced by streams, while nearly half are within 10 m of streams.
Daniel O'Hara, Liran Goren, Roos M. J. van Wees, Benjamin Campforts, Pablo Grosse, Pierre Lahitte, Gabor Kereszturi, and Matthieu Kervyn
Earth Surf. Dynam., 12, 709–726, https://doi.org/10.5194/esurf-12-709-2024, https://doi.org/10.5194/esurf-12-709-2024, 2024
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Understanding how volcanic edifices develop drainage basins remains unexplored in landscape evolution. Using digital evolution models of volcanoes with varying ages, we quantify the geometries of their edifices and associated drainage basins through time. We find that these metrics correlate with edifice age and are thus useful indicators of a volcano’s history. We then develop a generalized model for how volcano basins develop and compare our results to basin evolution in other settings.
Brayden Noh, Omar Wani, Kieran B. J. Dunne, and Michael P. Lamb
Earth Surf. Dynam., 12, 691–708, https://doi.org/10.5194/esurf-12-691-2024, https://doi.org/10.5194/esurf-12-691-2024, 2024
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In this paper, we propose a framework for generating risk maps that provide the probabilities of erosion due to river migration. This framework uses concepts from probability theory to learn the river migration model's parameter values from satellite data while taking into account parameter uncertainty. Our analysis shows that such geomorphic risk estimation is more reliable than models that do not explicitly consider various sources of variability and uncertainty.
Steven Y. J. Lai, David Amblas, Aaron Micallef, and Hervé Capart
Earth Surf. Dynam., 12, 621–640, https://doi.org/10.5194/esurf-12-621-2024, https://doi.org/10.5194/esurf-12-621-2024, 2024
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This study explores the creation of submarine canyons and hanging-wall fans on active faults, which can be defined by gravity-dominated breaching and underflow-dominated diffusion processes. The study reveals the self-similarity in canyon–fan long profiles, uncovers Hack’s scaling relationship and proposes a formula to estimate fan volume using canyon length. This is validated by global data from source-to-sink systems, providing insights into deep-water sedimentary processes.
Anuska Narayanan, Sagy Cohen, and John R. Gardner
Earth Surf. Dynam., 12, 581–599, https://doi.org/10.5194/esurf-12-581-2024, https://doi.org/10.5194/esurf-12-581-2024, 2024
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This study investigates the profound impact of deforestation in the Amazon on sediment dynamics. Novel remote sensing data and statistical analyses reveal significant changes, especially in heavily deforested regions, with rapid effects within a year. In less disturbed areas, a 1- to 2-year lag occurs, influenced by natural sediment shifts and human activities. These findings highlight the need to understand the consequences of human activity for our planet's future.
Jacob Hardt, Tim P. Dooley, and Michael R. Hudec
Earth Surf. Dynam., 12, 559–579, https://doi.org/10.5194/esurf-12-559-2024, https://doi.org/10.5194/esurf-12-559-2024, 2024
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Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
Earth Surf. Dynam., 12, 515–536, https://doi.org/10.5194/esurf-12-515-2024, https://doi.org/10.5194/esurf-12-515-2024, 2024
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Pebbles become increasingly rounded during downstream transport in rivers due to abrasion. This study quantifies pebble roundness along the length of two Himalayan rivers. We demonstrate that roundness increases with downstream distance and that the rates are dependent on rock type. We apply this to reconstructing travel distances and hence the size of ancient Himalaya. Results show that the ancient river network was larger than the modern one, indicating that there has been river capture.
Jens Martin Turowski, Aaron Bufe, and Stefanie Tofelde
Earth Surf. Dynam., 12, 493–514, https://doi.org/10.5194/esurf-12-493-2024, https://doi.org/10.5194/esurf-12-493-2024, 2024
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Daniel J. Ciarletta, Jennifer L. Miselis, Julie C. Bernier, and Arnell S. Forde
Earth Surf. Dynam., 12, 449–475, https://doi.org/10.5194/esurf-12-449-2024, https://doi.org/10.5194/esurf-12-449-2024, 2024
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Chao Zhou, Xibin Tan, Yiduo Liu, and Feng Shi
Earth Surf. Dynam., 12, 433–448, https://doi.org/10.5194/esurf-12-433-2024, https://doi.org/10.5194/esurf-12-433-2024, 2024
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Moritz Altmann, Madlene Pfeiffer, Florian Haas, Jakob Rom, Fabian Fleischer, Tobias Heckmann, Livia Piermattei, Michael Wimmer, Lukas Braun, Manuel Stark, Sarah Betz-Nutz, and Michael Becht
Earth Surf. Dynam., 12, 399–431, https://doi.org/10.5194/esurf-12-399-2024, https://doi.org/10.5194/esurf-12-399-2024, 2024
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We show a long-term erosion monitoring of several sections on Little Ice Age lateral moraines with derived sediment yield from historical and current digital elevation modelling (DEM)-based differences. The first study period shows a clearly higher range of variability of sediment yield within the sites than the later periods. In most cases, a decreasing trend of geomorphic activity was observed.
Paul A. Carling
Earth Surf. Dynam., 12, 381–397, https://doi.org/10.5194/esurf-12-381-2024, https://doi.org/10.5194/esurf-12-381-2024, 2024
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Edge rounding in Shap granite glacial erratics is an irregular function of distance from the source outcrop in northern England, UK. Block shape is conservative, evolving according to block fracture mechanics – stochastic and silver ratio models – towards either of two attractor states. Progressive reduction in size occurs for blocks transported at the sole of the ice mass where the blocks are subject to compressive and tensile forces of the ice acting against a bedrock or till surface.
Gary Parker, Chenge An, Michael P. Lamb, Marcelo H. Garcia, Elizabeth H. Dingle, and Jeremy G. Venditti
Earth Surf. Dynam., 12, 367–380, https://doi.org/10.5194/esurf-12-367-2024, https://doi.org/10.5194/esurf-12-367-2024, 2024
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River morphology has traditionally been divided by the size 2 mm. We use dimensionless arguments to show that particles in the 1–5 mm range (i) are the finest range not easily suspended by alluvial flood flows, (ii) are transported preferentially over coarser gravel, and (iii), within limits, are also transported preferentially over sand. We show how fluid viscosity mediates the special status of sediment in this range.
Lindsay Marie Capito, Enrico Pandrin, Walter Bertoldi, Nicola Surian, and Simone Bizzi
Earth Surf. Dynam., 12, 321–345, https://doi.org/10.5194/esurf-12-321-2024, https://doi.org/10.5194/esurf-12-321-2024, 2024
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We propose that the pattern of erosion and deposition from repeat topographic surveys can be a proxy for path length in gravel-bed rivers. With laboratory and field data, we applied tools from signal processing to quantify this periodicity and used these path length estimates to calculate sediment transport using the morphological method. Our results highlight the potential to expand the use of the morphological method using only remotely sensed data as well as its limitations.
Xuxu Wu, Jonathan Malarkey, Roberto Fernández, Jaco H. Baas, Ellen Pollard, and Daniel R. Parsons
Earth Surf. Dynam., 12, 231–247, https://doi.org/10.5194/esurf-12-231-2024, https://doi.org/10.5194/esurf-12-231-2024, 2024
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The seabed changes from flat to rippled in response to the frictional influence of waves and currents. This experimental study has shown that the speed of this change, the size of ripples that result and even whether ripples appear also depend on the amount of sticky mud present. This new classification on the basis of initial mud content should lead to improvements in models of seabed change in present environments by engineers and the interpretation of past environments by geologists.
Andrea D'Alpaos, Davide Tognin, Laura Tommasini, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 181–199, https://doi.org/10.5194/esurf-12-181-2024, https://doi.org/10.5194/esurf-12-181-2024, 2024
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Sediment erosion induced by wind waves is one of the main drivers of the morphological evolution of shallow tidal environments. However, a reliable description of erosion events for the long-term morphodynamic modelling of tidal systems is still lacking. By statistically characterizing sediment erosion dynamics in the Venice Lagoon over the last 4 centuries, we set up a novel framework for a synthetic, yet reliable, description of erosion events in tidal systems.
Davide Tognin, Andrea D'Alpaos, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 201–218, https://doi.org/10.5194/esurf-12-201-2024, https://doi.org/10.5194/esurf-12-201-2024, 2024
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Reliable quantification of sediment transport processes is necessary to understand the fate of shallow tidal environments. Here we present a framework for the description of suspended sediment dynamics to quantify deposition in the long-term modelling of shallow tidal systems. This characterization, together with that of erosion events, allows one to set up synthetic, yet reliable, models for the long-term evolution of tidal landscapes.
Emma L. S. Graf, Hugh D. Sinclair, Mikaël Attal, Boris Gailleton, Basanta Raj Adhikari, and Bishnu Raj Baral
Earth Surf. Dynam., 12, 135–161, https://doi.org/10.5194/esurf-12-135-2024, https://doi.org/10.5194/esurf-12-135-2024, 2024
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Using satellite images, we show that, unlike other examples of earthquake-affected rivers, the rivers of central Nepal experienced little increase in sedimentation following the 2015 Gorkha earthquake. Instead, a catastrophic flood occurred in 2021 that buried towns and agricultural land under up to 10 m of sediment. We show that intense storms remobilised glacial sediment from high elevations causing much a greater impact than flushing of earthquake-induced landslides.
Mohamad Nasr, Adele Johannot, Thomas Geay, Sebastien Zanker, Jules Le Guern, and Alain Recking
Earth Surf. Dynam., 12, 117–134, https://doi.org/10.5194/esurf-12-117-2024, https://doi.org/10.5194/esurf-12-117-2024, 2024
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Hydrophones are used to monitor sediment transport in the river by listening to the acoustic noise generated by particle impacts on the riverbed. However, this acoustic noise is modified by the river flow and can cause misleading information about sediment transport. This article proposes a model that corrects the measured acoustic signal. Testing the model showed that the corrected signal is better correlated with bedload flux in the river.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 105–115, https://doi.org/10.5194/esurf-12-105-2024, https://doi.org/10.5194/esurf-12-105-2024, 2024
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We provide a detailed characterization of the frequency, intensity and duration of flooding events at a site along the Texas coast. Our analysis demonstrates the suitability of relatively simple wave run-up models to estimate the frequency and intensity of coastal flooding. Our results validate and expand a probabilistic model of coastal flooding driven by wave run-up that can then be used in coastal risk management in response to sea level rise.
Shunsuke Oya, Fumitoshi Imaizumi, and Shoki Takayama
Earth Surf. Dynam., 12, 67–86, https://doi.org/10.5194/esurf-12-67-2024, https://doi.org/10.5194/esurf-12-67-2024, 2024
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The monitoring of pore water pressure in fully and partly saturated debris flows was performed at Ohya landslide scar, central Japan. The pore water pressure in some partly saturated flows greatly exceeded the hydrostatic pressure. The depth gradient of the pore water pressure in the lower part of the flow was generally higher than the upper part of the flow. We conclude that excess pore water pressure is present in many debris flow surges and is an important mechanism in debris flow behavior.
Gabriele Barile, Marco Redolfi, and Marco Tubino
Earth Surf. Dynam., 12, 87–103, https://doi.org/10.5194/esurf-12-87-2024, https://doi.org/10.5194/esurf-12-87-2024, 2024
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River bifurcations often show the closure of one branch (avulsion), whose causes are still poorly understood. Our model shows that when one branch stops transporting sediments, the other considerably erodes and captures much more flow, resulting in a self-sustaining process. This phenomenon intensifies when increasing the length of the branches, eventually leading to branch closure. This work may help to understand when avulsions occur and thus to design sustainable river restoration projects.
Dieter Rickenmann
Earth Surf. Dynam., 12, 11–34, https://doi.org/10.5194/esurf-12-11-2024, https://doi.org/10.5194/esurf-12-11-2024, 2024
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Field measurements of the bedload flux with a high temporal resolution in a steep mountain stream were used to analyse the transport fluctuations as a function of the flow conditions. The disequilibrium ratio, a proxy for the solid particle concentration in the flow, was found to influence the sediment transport behaviour, and above-average disequilibrium conditions – associated with a larger sediment availability on the streambed – substantially affect subsequent transport conditions.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 1–10, https://doi.org/10.5194/esurf-12-1-2024, https://doi.org/10.5194/esurf-12-1-2024, 2024
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Coastal flooding can cause significant damage to coastal ecosystems, infrastructure, and communities and is expected to increase in frequency with the acceleration of sea level rise. In order to respond to it, it is crucial to measure and model their frequency and intensity. Here, we show deep-learning techniques can be successfully used to automatically detect flooding events from complex coastal imagery, opening the way to real-time monitoring and data acquisition for model development.
Nil Carrion-Bertran, Albert Falqués, Francesca Ribas, Daniel Calvete, Rinse de Swart, Ruth Durán, Candela Marco-Peretó, Marta Marcos, Angel Amores, Tim Toomey, Àngels Fernández-Mora, and Jorge Guillén
EGUsphere, https://doi.org/10.5194/egusphere-2023-2721, https://doi.org/10.5194/egusphere-2023-2721, 2023
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The sensitivity to the wave and sea-level forcing sources in predicting a 6-month embayed beach evolution is assessed using two different morphodynamic models. After a successful model calibration using in-situ data, other sources are applied. The wave source choice is critical: hindcast data provide wrong results due to an angle bias whilst the correct dynamics is recovered with the wave conditions from an offshore buoy. The use of different sea-level sources gives no significant differences.
Judith Y. Zomer, Bart Vermeulen, and Antonius J. F. Hoitink
Earth Surf. Dynam., 11, 1283–1298, https://doi.org/10.5194/esurf-11-1283-2023, https://doi.org/10.5194/esurf-11-1283-2023, 2023
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Secondary bedforms that are superimposed on large, primary dunes likely play a large role in fluvial systems. This study demonstrates that they can be omnipresent. Especially during peak flows, they grow large and can have steep slopes, likely affecting flood risk and sediment transport dynamics. Primary dune morphology determines whether they continuously or intermittently migrate. During discharge peaks, the secondary bedforms can become the dominant dune scale.
Matthew C. Morriss, Benjamin Lehmann, Benjamin Campforts, George Brencher, Brianna Rick, Leif S. Anderson, Alexander L. Handwerger, Irina Overeem, and Jeffrey Moore
Earth Surf. Dynam., 11, 1251–1274, https://doi.org/10.5194/esurf-11-1251-2023, https://doi.org/10.5194/esurf-11-1251-2023, 2023
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In this paper, we investigate the 28 June 2022 collapse of the Chaos Canyon landslide in Rocky Mountain National Park, Colorado, USA. We find that the landslide was moving prior to its collapse and took place at peak spring snowmelt; temperature modeling indicates the potential presence of permafrost. We hypothesize that this landslide could be part of the broader landscape evolution changes to alpine terrain caused by a warming climate, leading to thawing alpine permafrost.
Christopher Tomsett and Julian Leyland
Earth Surf. Dynam., 11, 1223–1249, https://doi.org/10.5194/esurf-11-1223-2023, https://doi.org/10.5194/esurf-11-1223-2023, 2023
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Vegetation influences how rivers change through time, yet the way in which we analyse vegetation is limited. Current methods collect detailed data at the individual plant level or determine dominant vegetation types across larger areas. Herein, we use UAVs to collect detailed vegetation datasets for a 1 km length of river and link vegetation properties to channel evolution occurring within the study site, providing a new method for investigating the influence of vegetation on river systems.
Rabab Yassine, Ludovic Cassan, Hélène Roux, Olivier Frysou, and François Pérès
Earth Surf. Dynam., 11, 1199–1221, https://doi.org/10.5194/esurf-11-1199-2023, https://doi.org/10.5194/esurf-11-1199-2023, 2023
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Predicting river morphology evolution is very complicated, especially for mountain rivers with complex morphologies such as the Lac des Gaves reach in France. A 2D hydromorphological model was developed to reproduce the channel's evolution and provide reliable volumetric predictions while revealing the challenge of choosing adapted sediment transport and friction laws. Our model can provide decision-makers with reliable predictions to design suitable restoration measures for this reach.
Daisuke Harada and Shinji Egashira
Earth Surf. Dynam., 11, 1183–1197, https://doi.org/10.5194/esurf-11-1183-2023, https://doi.org/10.5194/esurf-11-1183-2023, 2023
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This paper proposes a method for describing large-wood behavior in terms of the convection equation and the storage equation, which are associated with active sediment erosion and deposition. Compared to the existing Lagrangian method, the proposed method can easily simulate the behavior of large wood in the flow field with active sediment transport. The method is applied to the flood disaster in the Akatani River in 2017, and the 2-D flood flow computations are successfully performed.
Hemanti Sharma and Todd A. Ehlers
Earth Surf. Dynam., 11, 1161–1181, https://doi.org/10.5194/esurf-11-1161-2023, https://doi.org/10.5194/esurf-11-1161-2023, 2023
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Seasonality in precipitation (P) and vegetation (V) influences catchment erosion (E), although which factor plays the dominant role is unclear. In this study, we performed a sensitivity analysis of E to P–V seasonality through numerical modeling. Our results suggest that P variations strongly influence seasonal variations in E, while the effect of seasonal V variations is secondary but significant. This is more pronounced in moderate and least pronounced in extreme environmental settings.
Eduardo Gomez-de la Peña, Giovanni Coco, Colin Whittaker, and Jennifer Montaño
Earth Surf. Dynam., 11, 1145–1160, https://doi.org/10.5194/esurf-11-1145-2023, https://doi.org/10.5194/esurf-11-1145-2023, 2023
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Predicting how shorelines change over time is a major challenge in coastal research. We here have turned to deep learning (DL), a data-driven modelling approach, to predict the movement of shorelines using observations from a camera system in New Zealand. The DL models here implemented succeeded in capturing the variability and distribution of the observed shoreline data. Overall, these findings indicate that DL has the potential to enhance the accuracy of current shoreline change predictions.
Thomas James Barnes, Thomas Vikhamar Schuler, Simon Filhol, and Karianne Staalesen Lilleøren
EGUsphere, https://doi.org/10.5194/egusphere-2023-2430, https://doi.org/10.5194/egusphere-2023-2430, 2023
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In this paper we use machine learning to automatically outline landforms based on their characteristics. We test several methods to identify the most accurate, and then proceed to develop the most accurate to improve its accuracy further. We manage to outline landforms with 65–75 % accuracy, at a resolution of 10 metres, thanks to high-quality/-resolution elevation data. We find that it is possible to run this method at a country-scale to quickly produce landform inventories for future studies.
Christoph Rettinger, Mina Tabesh, Ulrich Rüde, Stefan Vollmer, and Roy M. Frings
Earth Surf. Dynam., 11, 1097–1115, https://doi.org/10.5194/esurf-11-1097-2023, https://doi.org/10.5194/esurf-11-1097-2023, 2023
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Packing models promise efficient and accurate porosity predictions of fluvial sediment deposits. In this study, three packing models were reviewed, calibrated, and validated. Only two of the models were able to handle the continuous and large grain size distributions typically encountered in rivers. We showed that an extension by a cohesion model is necessary and developed guidelines for successful predictions in different rivers.
Alexander A. Ermilov, Gergely Benkő, and Sándor Baranya
Earth Surf. Dynam., 11, 1061–1095, https://doi.org/10.5194/esurf-11-1061-2023, https://doi.org/10.5194/esurf-11-1061-2023, 2023
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A novel, artificial-intelligence-based riverbed sediment analysis methodology is introduced that uses underwater images to identify the characteristic sediment classes. The main novelties of the procedure are as follows: underwater images are used, the method enables continuous mapping of the riverbed along the measurement vessel’s route contrary to conventional techniques, the method is cost-efficient, and the method works without scaling.
Kelly M. Sanks, John B. Shaw, Samuel M. Zapp, José Silvestre, Ripul Dutt, and Kyle M. Straub
Earth Surf. Dynam., 11, 1035–1060, https://doi.org/10.5194/esurf-11-1035-2023, https://doi.org/10.5194/esurf-11-1035-2023, 2023
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River deltas encompass many depositional environments (like channels and wetlands) that interact to produce coastal environments that change through time. The processes leading to sedimentation in wetlands are often neglected from physical delta models. We show that wetland sedimentation constrains flow to the channels, changes sedimentation rates, and produces channels more akin to field-scale deltas. These results have implications for the management of these vulnerable coastal landscapes.
Katharina Wetterauer and Dirk Scherler
Earth Surf. Dynam., 11, 1013–1033, https://doi.org/10.5194/esurf-11-1013-2023, https://doi.org/10.5194/esurf-11-1013-2023, 2023
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In glacial landscapes, debris supply rates vary spatially and temporally. Rockwall erosion rates derived from cosmogenic 10Be concentrations in medial moraine debris at five Swiss glaciers around Pigne d'Arolla indicate an increase in erosion from the end of the Little Ice Age towards deglaciation but temporally more stable rates over the last ∼100 years. Rockwall erosion rates are higher where rockwalls are steep and north-facing, suggesting a potential slope and temperature control.
Sam Anderson, Nicole Gasparini, and Joel Johnson
Earth Surf. Dynam., 11, 995–1011, https://doi.org/10.5194/esurf-11-995-2023, https://doi.org/10.5194/esurf-11-995-2023, 2023
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We measured rock strength and amount of fracturing in the two different rock types, sandstones and carbonates, in Last Chance Canyon, New Mexico, USA. Where there is more carbonate bedrock, hills and channels steepen in Last Chance Canyon. This is because the carbonate-type bedrock tends to be more thickly bedded, is less fractured, and is stronger. The carbonate bedrock produces larger boulders than the sandstone bedrock, which can protect the more fractured sandstone bedrock from erosion.
Jens M. Turowski, Gunnar Pruß, Anne Voigtländer, Andreas Ludwig, Angela Landgraf, Florian Kober, and Audrey Bonnelye
Earth Surf. Dynam., 11, 979–994, https://doi.org/10.5194/esurf-11-979-2023, https://doi.org/10.5194/esurf-11-979-2023, 2023
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Rivers can cut into rocks, and their strength modulates the river's erosion rates. Yet, which properties of the rock control its response to erosive action is poorly understood. Here, we describe parallel experiments to measure rock erosion rates under fluvial impact erosion and the rock's geotechnical properties such as fracture strength, elasticity, and density. Erosion rates vary over a factor of a million between different rock types. We use the data to improve current theory.
Koji Ohata, Hajime Naruse, and Norihiro Izumi
Earth Surf. Dynam., 11, 961–977, https://doi.org/10.5194/esurf-11-961-2023, https://doi.org/10.5194/esurf-11-961-2023, 2023
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We investigated the influence of sediment transport modes on the formation of bedforms using theoretical analysis. The results of the theoretical analysis were verified with published data of plane beds obtained by fieldwork and laboratory experiments. We found that suspended sand particles can promote the formation of plane beds on a fine-grained bed, which suggests that the presence of suspended particles suppresses the development of dunes under submarine sediment-laden gravity currents.
Matan Ben-Asher, Florence Magnin, Sebastian Westermann, Josué Bock, Emmanuel Malet, Johan Berthet, Ludovic Ravanel, and Philip Deline
Earth Surf. Dynam., 11, 899–915, https://doi.org/10.5194/esurf-11-899-2023, https://doi.org/10.5194/esurf-11-899-2023, 2023
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Quantitative knowledge of water availability on high mountain rock slopes is very limited. We use a numerical model and field measurements to estimate the water balance at a steep rock wall site. We show that snowmelt is the main source of water at elevations >3600 m and that snowpack hydrology and sublimation are key factors. The new information presented here can be used to improve the understanding of thermal, hydrogeological, and mechanical processes on steep mountain rock slopes.
Jessica Droujko, Srividya Hariharan Sudha, Gabriel Singer, and Peter Molnar
Earth Surf. Dynam., 11, 881–897, https://doi.org/10.5194/esurf-11-881-2023, https://doi.org/10.5194/esurf-11-881-2023, 2023
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We combined data from satellite images with data measured from a kayak in order to understand the propagation of fine sediment in the Vjosa River. We were able to find some storm-activated and some permanent sources of sediment. We also estimated how much fine sediment is carried into the Adriatic Sea by the Vjosa River: approximately 2.5 Mt per year, which matches previous findings. With our work, we hope to show the potential of open-access satellite images.
Kate C. P. Leary, Leah Tevis, and Mark Schmeeckle
Earth Surf. Dynam., 11, 835–847, https://doi.org/10.5194/esurf-11-835-2023, https://doi.org/10.5194/esurf-11-835-2023, 2023
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Despite the importance of bedforms (e.g., ripples, dunes) to sediment transport, the details of sediment transport on a sub-bedform scale are poorly understood. This paper investigates sediment transport in the downstream and cross-stream directions over bedforms with straight crests. We find that the patterns of bedload transport are highly variable on the sub-bedform scale, which is important for our understanding of the evolution of bedforms with complex crest geometries.
Paul A. Carling, John D. Jansen, Teng Su, Jane Lund Andersen, and Mads Faurschou Knudsen
Earth Surf. Dynam., 11, 817–833, https://doi.org/10.5194/esurf-11-817-2023, https://doi.org/10.5194/esurf-11-817-2023, 2023
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Many steep glaciated rock walls collapsed when the Ice Age ended. How ice supports a steep rock wall until the ice decays is poorly understood. A collapsed rock wall was surveyed in the field and numerically modelled. Cosmogenic exposure dates show it collapsed and became ice-free ca. 18 ka ago. The model showed that the rock wall failed very slowly because ice was buttressing the slope. Dating other collapsed rock walls can improve understanding of how and when the last Ice Age ended.
Paul A. Jarvis, Clement Narteau, Olivier Rozier, and Nathalie M. Vriend
Earth Surf. Dynam., 11, 803–815, https://doi.org/10.5194/esurf-11-803-2023, https://doi.org/10.5194/esurf-11-803-2023, 2023
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Sand dune migration velocity is inversely proportional to dune size. Consequently, smaller, faster dunes can collide with larger, slower downstream dunes. Such collisions can result in either coalescence or ejection, whereby the dunes exchange mass but remain separate. Our numerical simulations show that the outcome depends probabilistically on the dune size ratio, which we describe through an empirical function. Our numerical predictions compare favourably against experimental observations.
Adrian Ringenbach, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Yves Bühler, Andreas Stoffel, and Andrin Caviezel
Earth Surf. Dynam., 11, 779–801, https://doi.org/10.5194/esurf-11-779-2023, https://doi.org/10.5194/esurf-11-779-2023, 2023
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Swiss researchers carried out repeated rockfall experiments with rocks up to human sizes in a steep mountain forest. This study focuses mainly on the effects of the rock shape and lying deadwood. In forested areas, cubic-shaped rocks showed a longer mean runout distance than platy-shaped rocks. Deadwood especially reduced the runouts of these cubic rocks. The findings enrich standard practices in modern rockfall hazard zoning assessments and strongly urge the incorporation of rock shape effects.
Colin K. Bloom, Corinne Singeisen, Timothy Stahl, Andrew Howell, and Chris Massey
Earth Surf. Dynam., 11, 757–778, https://doi.org/10.5194/esurf-11-757-2023, https://doi.org/10.5194/esurf-11-757-2023, 2023
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Earthquakes can cause damaging coastal cliff retreat, but we have a limited understanding of how these infrequent events influence multidecadal retreat. This makes hazard planning a challenge. In this study, we use historic aerial images to measure coastal cliff-top retreat at a site in New Zealand. We find that earthquakes account for close to half of multidecadal retreat at this site, and our results have helped us to develop tools for estimating the influence of earthquakes at other sites.
Rishitosh K. Sinha, Dwijesh Ray, Tjalling De Haas, Susan J. Conway, and Axel Noblet
Earth Surf. Dynam., 11, 713–730, https://doi.org/10.5194/esurf-11-713-2023, https://doi.org/10.5194/esurf-11-713-2023, 2023
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Our detailed investigation of Martian gullies formed in different substrates in 29 craters distributed between 30°–75° S latitude suggests that they can be differentiated from one another in terms of (1) morphology and length of alcoves and (2) mean gradient of the gully fans. The comparison between the Melton ratio, alcove length, and fan gradient of Martian and terrestrial gullies suggests that Martian gullies were likely formed by terrestrial debris-flow-like processes in the past.
Christopher J. Skinner and Thomas J. Coulthard
Earth Surf. Dynam., 11, 695–711, https://doi.org/10.5194/esurf-11-695-2023, https://doi.org/10.5194/esurf-11-695-2023, 2023
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Landscape evolution models allow us to simulate the way the Earth's surface is shaped and help us to understand relevant processes, in turn helping us to manage landscapes better. The models typically represent the land surface using a grid of square cells of equal size, averaging heights in those squares. This study shows that the size chosen by the modeller for these grid cells is important, with larger sizes making sediment output events larger but less frequent.
Hossein Hosseiny, Claire C. Masteller, Jedidiah E. Dale, and Colin B. Phillips
Earth Surf. Dynam., 11, 681–693, https://doi.org/10.5194/esurf-11-681-2023, https://doi.org/10.5194/esurf-11-681-2023, 2023
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It is of great importance to engineers and geomorphologists to predict the rate of bed load in rivers. In this contribution, we used a large dataset of measured data and developed an artificial neural network (ANN), a machine learning algorithm, for bed load prediction. The ANN model predicted the bed load flux close to measured values and better than the ones obtained from four standard bed load models with varying degrees of complexity.
Cited articles
Abbott, L. D., Silver, E. A., Anderson, R. S., Smith, R., Ingle, J. C.,
Kling, S. A., Haig, D., Small, E., Galewsky, J., and Sliter, W. S.:
Measurement of tectonic surface uplift rate in a young collisional mountain
belt, Nature, 385, 501–507, https://doi.org/10.1038/385501a0, 1997.
Allison, I. and Kruss, P.: Estimation of recent climate change in Irian Jaya
by numerical modeling of its tropical glaciers, Arctic Alpine Res., 9,
49–60, 1977.
Anderson, R. S., Molnar, P., and Kessler, M. A.: Features of glacial valley
profiles simply explained, J. Geophys. Res., 111, F01004,
https://doi.org/10.1029/2005JF000344, 2006.
Balco, G., Stone, J. O, Lifton, N. A., and Dunai, T. J.: A complete and
easily accessible means of calculating surface exposure ages or erosion rates
from 10Be and 26Al measurements, Quat. Geochronol., 3,
174–195, https://doi.org/10.1016/j.quageo.2007.12.001, 2008.
Ballantyne, C. K.: Paraglacial geomorphology, Quaternary Sci. Rev., 21,
1935–2017, https://doi.org/10.1016/S0277-3791(02)00005-7, 2002.
Ballantyne, C. K., Wilson, P., Schnabel, C., and Xu, S.: Lateglacial
rock-slope failures in northwest Ireland: age, causes and implications, J.
Quaternary Sci., 28, 789–802, https://doi.org/10.1002/jqs.2675, 2013.
Barquero, J. and Ellenberg, L.: Geomorphologie der alpinen Stufe des Chirripo
in Costa Rica, Eiszeitalter u. Gegenwart, 36, 1–9, 1986.
Barrows, T. T., Hope, G. S., Prentice, M. L., Fifield, L. K., and Tims, S.
G.: Late Pleistocene glaciation of the Mt Giluwe volcano, Papua New Guinea,
Quaternary Sci. Rev., 30, 2676–2689, https://doi.org/10.1016/j.quascirev.2011.05.022,
2011.
Bergoeing, J. P.: La fotografía aérea y su aplicación a la
geomorfología de Costa Rica, Ministerio de Obras Publicas y Transportes,
Instituto Geografico Nacional, San José, Costa Rica, 1978.
Böse, M.: Traces of glaciation in the high mountains of Taiwan,
Developments in Quaternary Science, 2, 347–352,
https://doi.org/10.1016/S1571-0866(04)80141-6, 2004.
Brocklehurst, S. H. and Whipple, K. X.: Hypsometry of glaciated landscapes,
Earth Surf. Proc. Land., 29, 907–926, https://doi.org/10.1002/esp.1083, 2004.
Broecker, W. S. and Denton, G. H.: The role of ocean atmosphere
reorganizations in glacial cycles, Geochim. Cosmochim. Ac., 53, 2465–2501,
https://doi.org/10.1016/0016-7037(89)90123-3, 1989.
Brozović, N., Burbank, D. W., and Meigs, A. J.: Glacial buzzsaws,
topographic lightning rods and landscape development in the northwestern
Himalaya and Karakoram, EOS, 77, p. 252, 1996.
Brozović, N., Burbank, D. W., and Meigs, A. J.: Climatic limits on
landscape development in the northwestern Himalaya, Science, 276, 571–574,
https://doi.org/10.1126/science.276.5312.571, 1997.
Byrne, T. and Liu, C.-S.: Geology and geophysics of an arc-continent
collision, Taiwan, Geol. S. Am. S., 358, v–viii, 2002.
Cabot, T. D., Wood, W. A., and Notestein, F. B.: The Cabot Expedition to the
Sierra Nevada de Santa Marta of Colombia, Geogr. Rev., 20, 587–621, 1939.
Carcaillet, J., Siame, L. L., Chu, H. T., Bourlès, D. L., Lu, W. C.,
Angelier, J., and Dussouillez, P.: First cosmic ray exposure dating (in situ
produced 10Be) of the late-Pleistocene and Holocene glaciation in
the Nanhutashan Mountains (Taiwan), Terra Nova, 19, 331–336,
https://doi.org/10.1111/j.1365-3121.2007.00756.x, 2007.
Chu, H. T., Sonic, W. L., and Kuo, Y. C.: New evidences of Late Quaternary
glacial relicts in the Nanhutashan Area, Taiwan, The Symposium on Taiwan
Quaternary & Workshop of the Asia Paleoenvironmental Change Project,
Keelung, p. 18, 2000.
Cui, Z., Yang, C., Liu, G., Zhang, W., Wang, S., and Sung, Q.: The Quaternary
glaciation of Shesan Mountain in Taiwan and glacial classification in monsoon
areas, Quatern. Int., 97–98, 147–153, https://doi.org/10.1016/S1040-6182(02)00060-5,
2002.
Cunningham, M. T. and Stark, C. P.: PHtools (Version 1.0), Zenodo,
https://doi.org/10.5281/zenodo.2538233, 2019a.
Cunningham, M. T. and Stark, C. P.: PHdata (Version 1.0), Zenodo,
https://doi.org/10.5281/zenodo.2538223, 2019b.
Cunningham, M. T. and Stark, C. P.: PHanalysis (Version 1.0), Zenodo,
https://doi.org/10.5281/zenodo.2538230, 2019c.
Cunningham, M. T. and Stark, C. P.: PHdoc (Version 1.0), GitHub, available
at: https://mcunningham917.github.io/PHdoc, last access: 12 January
2019d.
Dadson, S. J., Hovius, N., Chen, H., Dade, W. B., Hsieh, M.-L., Willett, S.
D., Hu, J.-C., Horng, M.-J., Chen, M.-C., Stark, C. P., Lague, D., and Lin,
J.-C.: Links between erosion, runoff variability and seismicity in the Taiwan
orogen, Nature, 426, 648–651, https://doi.org/10.1038/nature02150, 2003.
Dawson, G. M.: Report on the area of the Kamloops map-sheet, British
Columbia, Ottawa, Canada, v. 7, p. 12B, 1895.
Drummond, M. S., Bordelon, M., de Boer, J. Z., Defant, M. J., Bellon, H., and
Feigenson, M. D.: Igneous petrogenesis and tectonic setting of plutonic and
volcanic rocks of the Cordillera de Talamanca, Rica – Panama Central
American Arc, Am. J. Sci., 295, 875–919, 1995.
Egholm, D. L., Nielsen, S. B., Pedersen, V. K., and Lesemann, J.-E.: Glacial
effects limiting mountain height, Nature, 460, 884–887,
https://doi.org/10.1038/nature08263, 2009.
Farber, D. L., Hancock, G. S., Finkel, R. C., and Rodbell, D. T.: The age and
extent of tropical alpine glaciation in the Cordillera Blanca, Peru, J.
Quaternary Sci., 20, 759–776, https://doi.org/10.1002/jqs.994, 2005.
Farr, T. G., Rosen, P. A., Caro, E., Crippen, R., Duren, R., Hensley, S.,
Kobrick, M., Paller, M., Rodriguez, E., Roth, L., Seal, D., Shaffer, S.,
Shimada, J., Umland, J., Werner, M., Oskin, M., Burbank, D., and Alsdorf, D.:
The Shuttle Radar Topography Mission, Rev. Geophys., 45, RG2004,
https://doi.org/10.1029/2005RG000183, 2007.
Fox, M., Herman, F., Kissling, E., and Willett, S.D.: Rapid exhumation in the
Western Alps driven by slab detachment and glacial erosion, Geology, 43,
379–382, https://doi.org/10.1130/G36411.1, 2015.
Hall, A. M. and Kleman, J.: Glacial and periglacial buzzsaws: fitting
mechanism to metaphors, Quaternary Res., 81, 189–192,
https://doi.org/10.1016/j.yqres.2013.10.007, 2014.
Hastenrath, S.: On the Pleistocene glaciation of the Cordillera de
Talamanca, Costa Rica, Zeitschrift für Gletscherkunde and
Glazialgeologie, 9, 105–121, 1973.
Hastenrath, S.: Past glaciation in the tropics: Quaternary Sci. Rev., 28,
790–798, https://doi.org/10.1016/j.quascirev.2008.12.004, 2009.
Hebenstreit, R.: Present and former equilibrium line altitudes in the
Taiwanese high mountain range, Quatern. Int., 147, 70–75,
https://doi.org/10.1016/j.quaint.2005.09.008, 2006.
Hebenstreit, R. and Böse, M.: Geomorphological evidence for a Late
Pleistocene glaciation in the high mountains of Taiwan dated with age
estimates by optically stimulated luminescence (OSL), Z. Geomorphol., 130,
31-49, 2003.
Hebenstreit, R., Böse, M., and Murray, A.: Late Pleistocene and early
Holocene glaciations in Taiwanese mountains, Quatern. Int., 147, 76–88,
https://doi.org/10.1016/j.quaint.2005.09.009, 2006.
Hebenstreit, R., Ivy-Ochs, S., Kubik, P. W., Schlüchter, C., and
Böse, M.: Late glacial and early Holocene surface exposure ages of
glacial boulders in the Taiwanese high mountain range, Quaternary Sci. Rev.,
30, 298–311, https://doi.org/10.1016/j.quascirev.2010.11.002, 2011.
Herman, F., Seward, D., Valla, P. G., Carter, A., Kohn, B., Willett, S. D.,
and Ehlers, T. A.: Worldwide acceleration of mountain erosion under a cooling
climate, Nature, 504, 423–426, https://doi.org/10.1038/nature12877, 2013.
Hovius, N., Stark, C. P., Tutton, M. A., and Abbott, L. D.: Landslide-driven
drainage network evolution in a pre-steady state mountain belt: Finisterre
Mountains, Papua New Guinea, Geology, 26, 1071–1074,
https://doi.org/10.1130/0091-7613(1998)026<1071:LDDNEI>2.3.CO;2, 1998.
Hsu, W.-H., Byrne, T. B., Ouimet, W., Lee, Y.-H., Chen, Y.-G., van Soest, M.,
and Hodges, K.: Pleistocene onset of rapid, punctuated exhumation in the
eastern Central Range of the Taiwan orogenic belt, Geology, 44, 719–722,
https://doi.org/10.1130/G37914.1, 2016.
Kano, T.: Some topographical observations about the mountains of Formosa,
Geogr. Rev. [Japan], 8, 505–520, 1932.
Kano, T.: Contribution to the Glacial Topography of the Tugitaka Mountains,
Formosa, Geogr. Rev. [Japan], 11, 244–263, 1935.
Kaser, G. and Osmaston, H.: Tropical glaciers, Cambridge University Press,
Cambridge, UK, 2002.
Kelly, M. A., Lowell, T. V., Applegate, P. J., Phillips, F. M., Schaefer, J.
M., Smith, C. A., Kim, H., Leonard, K. C., and Hudson, A. M.: A locally
calibrated, late glacial 10Be production rate from a low-latitude,
high-altitude site in the Peruvian Andes, Quat. Geochronol., 26, 70–85,
https://doi.org/10.1016/j.quageo.2013.10.007, 2013.
Lachniet, M. S. and Seltzer, G. O.: Late Quaternary glaciation of Costa Rica,
GSA Bulletin, 114, 547–558,
https://doi.org/10.1130/0016-7606(2002)114<0547:LQGOCR>2.0.CO;2, 2002.
Lal, D.: Cosmic ray labeling of erosion surfaces: in situ nuclide production
rates and erosion models, Earth Planet. Sc. Lett., 104, 424–439, 1991.
Loeffler, E.: The Pleistocene glaciation of the Saruwaged Range, Territory of
New Guinea, Aust. Geogr., 11, 463–472, 1971.
MacGregor, K. R., Anderson, R. S., and Waddington, E. D.: Numerical modeling
of glacial erosion and headwall processes in alpine valleys, Geomorphology,
103, 189–204, https://doi.org/10.1016/j.geomorph.2008.04.022, 2009.
Margirier, A., Audin L., Robert, X., Herman, F., Ganne, J., and Schwartz, S.:
Time and mode of exhumation of the Cordillera Blanca batholith (Peruvian
Andes), J. Geophys. Res.-Sol. Ea., 121, 6235–6249, https://doi.org/10.1002/2016JB013055,
2016.
Mark, B. G., Harrison, S. P., Spess, A., New, M., Evans, D. J. A., and
Helmens, K. F.: Tropical snowline changes at the last glacial maximum: A
global assessment, Quatern. Int., 138–139, 168–201,
https://doi.org/10.1016/j.quaint.2005.02.012, 2005.
McColl, S. T.: Paraglacial Rock-Slope Stability, Geomorphology, 153–154,
1–16, https://doi.org/10.1016/j.geomorph.2012.02.015, 2012.
Mitchell, S. G. and Humphries, E. E.: Glacial cirques and the relationship
between equilibrium line altitudes and mountain range height, Geology, 43,
35–38, https://doi.org/10.1130/G36180.1, 2015.
Mitchell, S. G. and Montgomery, D. R.: Influence of a glacial buzzsaw on the
height and morphology of the Cascade Range in central Washington State, USA,
Quaternary Res., 65, 96–107, https://doi.org/10.1016/j.yqres.2005.08.018, 2006.
Molnar, P. and England, P.: Late Cenozoic uplift of mountain ranges and
global climate change: chicken or egg?, Nature, 346, 29–34,
https://doi.org/10.1038/346029a0, 1990.
Montgomery, D. R., Balco, G., and Willett, S. D.: Climate, tectonics, and the
morphology of the Andes, Geology, 29, 579–582,
https://doi.org/10.1130/0091-7613(2001)029<0579:CTATMO>2.0.CO;2, 2001.
Morell, K. D., Kirby, E., Fisher, D. M., and van Soest, M.: Geomorphic and
exhumational response of the Central American Volcanic Arc to Cocos Ridge
subduction, J. Geophys. Res., 117, B04409, https://doi.org/10.1029/2011JB008969, 2012.
Ono, Y., Shulmeister, J., Lehmkuhl, F., Asahi, K., and Aoki, T.: Timings and
causes of glacial advances across the PEP-II transect (East-Asia to
Antarctica) during the last glaciation cycle, Quatern. Int., 118–119,
55–68, https://doi.org/10.1016/S1040-6182(03)00130-7, 2004.
Ono, Y., Aoki, T., Hasegawa, H., and Dali, L.: Mountain glaciation in Japan
and Taiwan at the global Last Glacial Maximum, Quatern. Int., 138–139,
79–92, https://doi.org/10.1016/j.quaint.2005.02.007, 2005.
Orvis, K. H. and Horn, S. P.: Quaternary glaciers and climate on Cerro
Chirripó, Costa Rica, Quaternary Res., 54, 24–37,
https://doi.org/10.1006/qres.2000.2142, 2000.
Oskin, M. and Burbank, D. W.: Alpine landscape evolution dominated by cirque
retreat, Geology, 33, 933–936, https://doi.org/10.1130/G21957.1, 2005.
Ouimet, W. B., Byrne, T. B., Huang, C., Bierman, P. R., Lee, Y.-H., Hsu,
W.-H., Hsieh, M.-L., and Soest, M. C. V.: Extreme landscape disequilibrium
and slow erosion during rapid mountain building, American Geophysical Union
Fall Meeting, 14–18 December, 2015, San Francisco, CA, USA, abs. T32B–02,
2015.
Panzer, W.: Eiszeitspuren auf Formosa, Zeitschrift für Gletscherkunde,
23, 81–91, 1935.
Pedersen, V. K. and Egholm, D. L.: Glaciations in response to climate
variations preconditioned by evolving topography, Nature, 493, 206–210,
https://doi.org/10.1038/nature11786, 2013.
Penck, A.: Glacial features in the surface of the Alps, Geology, 13, 1–19,
1905.
Porter, S. C.: Present and past glaciation threshold in the Cascade Range,
Washington, U.S.A.: topographic and climatic controls and paleoclimatic
implications, J. Glaciol., 18, 101–116, https://doi.org/10.1017/S0022143000021559, 1977.
Porter, S. C.: Some geological implications of average quaternary glacial
conditions, Quaternary Res., 32, 245–261, https://doi.org/10.1016/0033-5894(89)90092-6,
1989.
Prentice, M. L., Hope, G. S., Maryunani, K., and Peterson, J. A.: An
evaluation of snowline data across New Guinea during the last major
glaciation, and area-based glacier snowlines in the Mt. Jaya region of Papua,
Indonesia, during the Last Glacial Maximum, Quatern. Int., 138–139, 93–117,
https://doi.org/10.1016/j.quaint.2005.02.008, 2005.
Ring, U.: Extreme uplift of the Rwenzori Mountains in the East African Rift,
Uganda: Structural framework and possible role of glaciations, Tectonics, 27,
TC4018, https://doi.org/10.1029/2007TC002176, 2008.
Schaefer, J. M., Denton, G. H., Kaplan, M., Putnam, A., Finkel, R. C.,
Barrell, D. J. A., Andersen, B. G., Schwartz, R., Mackintosh, A., Chinn, T.,
and Schlüchter, C.: High-frequency Holocene glacier fluctuations in New
Zealand differ from the northern signature, Science, 324, 622–625,
https://doi.org/10.1126/science.1169312, 2009.
Schildgen, T. F., van der Beek, P. A., Sinclair, H. D., and Thiede, R. C.:
Spatial correlation bias in late-Cenozoic erosion histories derived from
thermochronology, Nature, 559, 89–93, https://doi.org/10.1038/s41586-018-0260-6, 2018.
Schubert, C.: The glaciers of the Sierra Nevada de Mérida (Venezuela): a
photographic comparison of recent deglaciation, Erdkunde, 46, 58–64, 1992.
Schwanghart, W. and Kuhn, N. J.: TopoToolbox: A set of Matlab functions for
topographic analysis, Environ. Model. Softw., 25, 770–781,
https://doi.org/10.1016/j.envsoft.2009.12.002, 2010.
Schwanghart, W. and Scherler, D.: Short Communication: TopoToolbox 2 –
MATLAB-based software for topographic analysis and modeling in Earth surface
sciences, Earth Surf. Dynam., 2, 1–7,
https://doi.org/10.5194/esurf-2-1-2014, 2014.
Shimizu, C.: Glacial Landforms around Cerro Chirripó in Cordillera de
Talamanca, Costa Rica, J. Geogr. [Japan], 101, 601–621, 1992.
Siame, L. L., Chu, H. T., Carcaillet, J., Bourlès, D. L., Braucher, R.,
Lu, W. C., Angelier, J., and Dussouliez, P.: Glacial retreat history of
Nanhuta Shan (northeast Taiwan) from preserved glacial features: the cosmic
ray exposure perspective, Quaternary Sci. Rev., 26, 2185–2200,
https://doi.org/10.1016/j.quascirev.2007.04.016, 2007.
Stolar, D. B., Willett, S. D., and Montgomery, D. R.: Characterization of
topographic steady state in Taiwan, Earth Planet. Sc. Lett., 261, 421–431,
https://doi.org/10.1016/j.epsl.2007.07.045, 2007.
Stone, J. O.: Air pressure and cosmogenic isotope production, J. Geophys.
Res.-Sol. Ea., 105, 23753–23759, https://doi.org/10.1029/2000JB900181, 2000.
Strahler, A. N.: Hypsometric (area–altitude) analysis of erosional
topography, Geol. Soc. Am. Bull., 63, 1117–1142, 1952.
Suppe, J.: Mechanics of mountain building and metamorphism in Taiwan, Memoir
of the Geological Society of China, 4, 67–89, 1981.
Thomson, S. N., Brandon, M. T., Tomkin, J. H., Reiners, P. W., Vásquez,
C., and Wilson, N. J.: Glaciation as a destructive and constructive control
on mountain building, Nature, 467, 313–316, https://doi.org/10.1038/nature09365, 2010.
Valla, P. G., Shuster, D. L., and van der Beek, P. A.: Significant increase
in relief of the European Alps during mid-Pleistocene glaciations, Nat.
Geosci., 4, 688–689, https://doi.org/10.1038/NGEO1242, 2011.
Van der Beek, P, Van Melle, J., Guillot, S, Pêcher, A., Reiners, P. W.,
Nicolescu, S., and Latif, M.: Eocene Tibetan Plateau remnants preserved in
the northwest Himalaya, Nat. Geosci., 2, 364–368, https://doi.org/10.1038/ngeo503, 2009.
Ward, D. J., Anderson, R. S., and Haeussler, P. J.: Scaling the Teflon Peaks:
Rock type and the generation of extreme relief in the glaciated western
Alaska Range, J. Geophys. Res.-Earth, 117, F01031,
https://doi.org/10.1029/2011JF002068, 2012.
Weyl, R.: Vestigios de una glaciación del Pleistoceno en la Cordillera de
Talamanca, Instituto Geografico de Costa Rica, Costa Rica, Informe
Trimestral, 9–32, 1955.
Willett, S. D. and Brandon, M. T.: On steady state in mountain belts, GSA
Bulletin, 30, 175–178,
https://doi.org/10.1130/0091-7613(2002)030<0175:OSSIMB>2.0.CO;2, 2002.
Willett, S. D., Hovius, N., Brandon, M. T., and Fisher, D. M.: Tectonics,
climate and landscape evolution, GSA Special Paper, 398,
https://doi.org/10.1130/2006.2398(00), 2006.
Willett, S. D., McCoy, S. W., Perron, J. T., Goren, L., and Chen, C. Y.:
Dynamic reorganization of river Basins, Science, 343, 1118–1125,
https://doi.org/10.1126/science.1248765, 2014.
Wood, W. A.: Recent Glacier Fluctuations in the Sierra Nevada de Santa Marta,
Colombia, Geogr. Rev., 60, 374–392, 1970.
Zeumann, S. and Hampel, A.: Impact of Cocos Ridge (Central America)
subduction on the forearc drainage system, Geology, 45, 907–910,
https://doi.org/10.1130/G39251.1, 2017.
Short summary
Glacial erosion is known to limit the height of midlatitude mountain ranges affected by substantial glaciation during cold periods. Our study examines this phenomenon in the tropics. A new form of hypsometric analysis, along with other evidence, of 10 tropical ranges reveals widespread signs of a perched glacial base level at the ELA. Although glacial influence is moderate to weak in these environments, the evidence suggests that glacial erosion acts to limit the height of tropical ranges.
Glacial erosion is known to limit the height of midlatitude mountain ranges affected by...
