Articles | Volume 8, issue 1
https://doi.org/10.5194/esurf-8-1-2020
© Author(s) 2020. 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-8-1-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Jan 2020
Research article |
| 03 Jan 2020
| 03 Jan 2020
Potential links between Baltic Sea submarine terraces and groundwater seeping
Martin Jakobsson
CORRESPONDING AUTHOR
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Matt O'Regan
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Carl-Magnus Mörth
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Christian Stranne
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Elizabeth Weidner
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Center for Coastal and Ocean Mapping, University of New Hampshire, New Hampshire, USA
Jim Hansson
The Maritime Museum, Stockholm, Sweden
Richard Gyllencreutz
Department of Geological Sciences, Stockholm University, and Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Christoph Humborg
The Baltic Sea Centre, Stockholm University, Stockholm, 10691, Sweden
Tina Elfwing
The Baltic Sea Centre, Stockholm University, Stockholm, 10691, Sweden
Alf Norkko
Tvärminne Zoological Station, University of Helsinki, Hanko,
Finland
The Baltic Sea Centre, Stockholm University, Stockholm, 10691, Sweden
Joanna Norkko
Tvärminne Zoological Station, University of Helsinki, Hanko,
Finland
Björn Nilsson
Department of Archaeology and Ancient History, Lund University, Lund, Sweden
Arne Sjöström
Department of Archaeology and Ancient History, Lund University, Lund, Sweden
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Cited
18 citations as recorded by crossref.
- Physical Disturbance by Bottom Trawling Suspends Particulate Matter and Alters Biogeochemical Processes on and Near the Seafloor C. Bradshaw et al. 10.3389/fmars.2021.683331
- Salt leaching by freshwater and its impact on seafloor stability: An experimental investigation N. Saadatkhah et al. 10.1016/j.margeo.2022.106959
- Can Offshore Meteoric Groundwater Generate Mechanical Instabilities in Passive Continental Margins? A. Micallef et al. 10.1029/2022JF006954
- Submarine Groundwater Discharge From Non-Tidal Coastal Peatlands Along the Baltic Sea E. Racasa et al. 10.3389/feart.2021.665802
- A geophysical, geochemical and microbiological study of a newly discovered pockmark with active gas seepage and submarine groundwater discharge (MET1-BH, central Gulf of Gdańsk, southern Baltic Sea) J. Idczak et al. 10.1016/j.scitotenv.2020.140306
- Hundalee Fault, North Canterbury, New Zealand: late Quaternary activity and regional tectonics D. Barrell et al. 10.1080/00288306.2022.2153877
- Submarine slope destabilization and gully formation by water sapping: Physical simulation of an underestimated trigger of subaqueous sediment gravity flows C. Holz Boffo et al. 10.1111/sed.12966
- Biogeochemical functioning of the Baltic Sea K. Kuliński et al. 10.5194/esd-13-633-2022
- Introduction to the Kaikōura earthquake special issue A. Nicol et al. 10.1080/00288306.2023.2197240
- Low Abundance of Methanotrophs in Sediments of Shallow Boreal Coastal Zones With High Water Methane Concentrations E. Broman et al. 10.3389/fmicb.2020.01536
- Investigation of submarine groundwater discharge into the Baltic Sea through varved glacial clays N. Chen et al. 10.1016/j.csr.2024.105337
- Complex Eyed Pockmarks and Submarine Groundwater Discharge Revealed by Acoustic Data and Sediment Cores in Eckernförde Bay, SW Baltic Sea J. Hoffmann et al. 10.1029/2019GC008825
- Morphology and origin of the palaeo cliff area in the Sambia Peninsula nearshore (SE Baltic Sea) D. Dorokhov et al. 10.1016/j.quaint.2021.03.025
- Reconstructing dynamics of the Baltic Ice Stream Complex during deglaciation of the Last Scandinavian Ice Sheet I. Szuman et al. 10.5194/tc-18-2407-2024
- Freshwater–Saltwater Interactions in a Multilayer Coastal Aquifer (Ostia Antica Archaeological Park, Central ITALY) M. Bonamico et al. 10.3390/w13131866
- Uplift and fault slip during the 2016 Kaikōura Earthquake and Late Quaternary, Kaikōura Peninsula, New Zealand A. Nicol et al. 10.1080/00288306.2021.2021955
- A State-Of-The-Art Perspective on the Characterization of Subterranean Estuaries at the Regional Scale N. Moosdorf et al. 10.3389/feart.2021.601293
- Spring erosional processes and small sapping valleys in southwestern lower Michigan, USA P. Colgan et al. 10.1002/esp.5858
18 citations as recorded by crossref.
- Physical Disturbance by Bottom Trawling Suspends Particulate Matter and Alters Biogeochemical Processes on and Near the Seafloor C. Bradshaw et al. 10.3389/fmars.2021.683331
- Salt leaching by freshwater and its impact on seafloor stability: An experimental investigation N. Saadatkhah et al. 10.1016/j.margeo.2022.106959
- Can Offshore Meteoric Groundwater Generate Mechanical Instabilities in Passive Continental Margins? A. Micallef et al. 10.1029/2022JF006954
- Submarine Groundwater Discharge From Non-Tidal Coastal Peatlands Along the Baltic Sea E. Racasa et al. 10.3389/feart.2021.665802
- A geophysical, geochemical and microbiological study of a newly discovered pockmark with active gas seepage and submarine groundwater discharge (MET1-BH, central Gulf of Gdańsk, southern Baltic Sea) J. Idczak et al. 10.1016/j.scitotenv.2020.140306
- Hundalee Fault, North Canterbury, New Zealand: late Quaternary activity and regional tectonics D. Barrell et al. 10.1080/00288306.2022.2153877
- Submarine slope destabilization and gully formation by water sapping: Physical simulation of an underestimated trigger of subaqueous sediment gravity flows C. Holz Boffo et al. 10.1111/sed.12966
- Biogeochemical functioning of the Baltic Sea K. Kuliński et al. 10.5194/esd-13-633-2022
- Introduction to the Kaikōura earthquake special issue A. Nicol et al. 10.1080/00288306.2023.2197240
- Low Abundance of Methanotrophs in Sediments of Shallow Boreal Coastal Zones With High Water Methane Concentrations E. Broman et al. 10.3389/fmicb.2020.01536
- Investigation of submarine groundwater discharge into the Baltic Sea through varved glacial clays N. Chen et al. 10.1016/j.csr.2024.105337
- Complex Eyed Pockmarks and Submarine Groundwater Discharge Revealed by Acoustic Data and Sediment Cores in Eckernförde Bay, SW Baltic Sea J. Hoffmann et al. 10.1029/2019GC008825
- Morphology and origin of the palaeo cliff area in the Sambia Peninsula nearshore (SE Baltic Sea) D. Dorokhov et al. 10.1016/j.quaint.2021.03.025
- Reconstructing dynamics of the Baltic Ice Stream Complex during deglaciation of the Last Scandinavian Ice Sheet I. Szuman et al. 10.5194/tc-18-2407-2024
- Freshwater–Saltwater Interactions in a Multilayer Coastal Aquifer (Ostia Antica Archaeological Park, Central ITALY) M. Bonamico et al. 10.3390/w13131866
- Uplift and fault slip during the 2016 Kaikōura Earthquake and Late Quaternary, Kaikōura Peninsula, New Zealand A. Nicol et al. 10.1080/00288306.2021.2021955
- A State-Of-The-Art Perspective on the Characterization of Subterranean Estuaries at the Regional Scale N. Moosdorf et al. 10.3389/feart.2021.601293
- Spring erosional processes and small sapping valleys in southwestern lower Michigan, USA P. Colgan et al. 10.1002/esp.5858
Latest update: 31 Oct 2025
Short summary
We studied coastal sea floor terraces in parts of the Baltic Sea using various types of sonar data, sediment cores, and video. Terraces (~1 m high, > 100 m long) are widespread in depths < 15 m and are formed in glacial clay. Our study supports an origin from groundwater flow through silty layers, undermining overlying layers when discharged at the sea floor. Submarine groundwater discharge like this may be a significant source of freshwater to the Baltic Sea that needs to be studied further.
We studied coastal sea floor terraces in parts of the Baltic Sea using various types of sonar...
