Articles | Volume 9, issue 4
https://doi.org/10.5194/esurf-9-953-2021
© Author(s) 2021. 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-9-953-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
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12 Aug 2021
Research article | Highlight paper |
| 12 Aug 2021
| 12 Aug 2021
Dynamics of salt intrusion in the Mekong Delta: results of field observations and integrated coastal–inland modelling
Sepehr Eslami
CORRESPONDING AUTHOR
Department of Physical Geography, Faculty of Geoscience, Utrecht University, Utrecht, 3584 CB, the Netherlands
Marine and Coastal Systems Unit, Deltares, Delft, 2629 HV, the Netherlands
Piet Hoekstra
Department of Physical Geography, Faculty of Geoscience, Utrecht University, Utrecht, 3584 CB, the Netherlands
Herman W. J. Kernkamp
Software Department, Deltares, Delft, 2629 HV, the Netherlands
Nam Nguyen Trung
Southern Institute for Water Resources Planning (SIWRP), Ho Chi Minh City, Ward 3 72710, Vietnam
Dung Do Duc
Southern Institute for Water Resources Planning (SIWRP), Ho Chi Minh City, Ward 3 72710, Vietnam
Hung Nguyen Nghia
Southern Institute of Water Resources Research (SIWRR), Ho Chi Minh City, 656 Võ Văn Ki\^{e}̣t, District 5, Vietnam
Tho Tran Quang
Southern Institute for Water Resources Planning (SIWRP), Ho Chi Minh City, Ward 3 72710, Vietnam
Arthur van Dam
Software Department, Deltares, Delft, 2629 HV, the Netherlands
Stephen E. Darby
Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK
Daniel R. Parsons
Department of Geography, Environment and Earth Sciences, University of Hull, Hull HU6 7RX, UK
Grigorios Vasilopoulos
Department of Geography, Environment and Earth Sciences, University of Hull, Hull HU6 7RX, UK
Lisanne Braat
Department of Geology and Planetary Sciences, California Institute of Technology, CA 91125, USA
Maarten van der Vegt
Department of Physical Geography, Faculty of Geoscience, Utrecht University, Utrecht, 3584 CB, the Netherlands
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Maarten G. Kleinhans, Maarten van der Vegt, Jasper Leuven, Lisanne Braat, Henk Markies, Arjan Simmelink, Chris Roosendaal, Arjan van Eijk, Paul Vrijbergen, and Marcel van Maarseveen
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Lisanne Braat, Thijs van Kessel, Jasper R. F. W. Leuven, and Maarten G. Kleinhans
Earth Surf. Dynam., 5, 617–652, https://doi.org/10.5194/esurf-5-617-2017, https://doi.org/10.5194/esurf-5-617-2017, 2017
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Jannis M. Hoch, Arjen V. Haag, Arthur van Dam, Hessel C. Winsemius, Ludovicus P. H. van Beek, and Marc F. P. Bierkens
Hydrol. Earth Syst. Sci., 21, 117–132, https://doi.org/10.5194/hess-21-117-2017, https://doi.org/10.5194/hess-21-117-2017, 2017
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Modelling inundations is pivotal to assess current and future flood hazard, and to define sound measures and policies. Yet, many models focus on the hydrologic or hydrodynamic aspect of floods only. We combined both by spatially coupling a hydrologic with a hydrodynamic model. This way we are able to balance the weaknesses of each model with the strengths of the other. We found that model coupling can indeed strongly improve discharge simulation, and see big potential in our approach.
Heiko Apel, Oriol Martínez Trepat, Nguyen Nghia Hung, Do Thi Chinh, Bruno Merz, and Nguyen Viet Dung
Nat. Hazards Earth Syst. Sci., 16, 941–961, https://doi.org/10.5194/nhess-16-941-2016, https://doi.org/10.5194/nhess-16-941-2016, 2016
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Many urban areas experience both fluvial and pluvial floods, thus this study aims to analyse fluvial and pluvial flood hazards as well as combined pluvial and fluvial flood hazards. This combined fluvial–pluvial flood hazard analysis is performed in a tropical environment for Can Tho city in the Mekong Delta. The final results are probabilistic hazard maps, showing the maximum inundation caused by floods of different magnitudes along with an uncertainty estimation.
W. A. Marra, S. J. McLelland, D. R. Parsons, B. J. Murphy, E. Hauber, and M. G. Kleinhans
Earth Surf. Dynam., 3, 389–408, https://doi.org/10.5194/esurf-3-389-2015, https://doi.org/10.5194/esurf-3-389-2015, 2015
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Groundwater seepage creates valleys with typical theater-shaped valley heads, which are found on Earth and on Mars. For a better interpretation of these systems, we conducted scale experiments on the formation such valleys. We find that entire landscapes, instead of just the shape of the valleys, provide insights into the source of groundwater. Landscapes filled with valleys indicate a local groundwater source in contrast to sparsely dissected landscapes formed by a distal source of groundwater.
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Short summary
Increased salt intrusion jeopardizes freshwater supply to the Mekong Delta, and the current trends are often inaccurately associated with sea level rise. Using observations and models, we show that salinity is highly sensitive to ocean surge, tides, water demand, and upstream discharge. We show that anthropogenic riverbed incision has significantly amplified salt intrusion, exemplifying the importance of preserving sediment budget and riverbed levels to protect deltas against salt intrusion.
Increased salt intrusion jeopardizes freshwater supply to the Mekong Delta, and the current...
