Articles | Volume 19, issue 7
https://doi.org/10.5194/cp-19-1321-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-1321-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Jul 2023
Research article |
| 10 Jul 2023
| 10 Jul 2023
A High Arctic inner shelf–fjord system from the Last Glacial Maximum to the present: Bessel Fjord and southwest Dove Bugt, northeastern Greenland
Kevin Zoller
CORRESPONDING AUTHOR
Department of Geosciences, UiT The Arctic University of Norway, Box
6050 Langnes, 9037 Tromsø, Norway
Jan Sverre Laberg
Department of Geosciences, UiT The Arctic University of Norway, Box
6050 Langnes, 9037 Tromsø, Norway
Tom Arne Rydningen
Department of Geosciences, UiT The Arctic University of Norway, Box
6050 Langnes, 9037 Tromsø, Norway
Katrine Husum
Norwegian Polar Institute, Box 6606 Langnes, 9296 Tromsø, Norway
Matthias Forwick
Department of Geosciences, UiT The Arctic University of Norway, Box
6050 Langnes, 9037 Tromsø, Norway
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Marta Santos-Garcia, Raja S. Ganeshram, Robyn E. Tuerena, Margot C. F. Debyser, Katrine Husum, Philipp Assmy, and Haakon Hop
Biogeosciences, 19, 5973–6002, https://doi.org/10.5194/bg-19-5973-2022, https://doi.org/10.5194/bg-19-5973-2022, 2022
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Terrestrial sources of nitrate are important contributors to the nutrient pool in the fjords of Kongsfjorden and Rijpfjorden in Svalbard during the summer, and they sustain most of the fjord primary productivity. Ongoing tidewater glacier retreat is postulated to favour light limitation and less dynamic circulation in fjords. This is suggested to encourage the export of nutrients to the middle and outer part of the fjord system, which may enhance primary production within and in offshore areas.
Ingrid Leirvik Olsen, Tom Arne Rydningen, Matthias Forwick, Jan Sverre Laberg, and Katrine Husum
The Cryosphere, 14, 4475–4494, https://doi.org/10.5194/tc-14-4475-2020, https://doi.org/10.5194/tc-14-4475-2020, 2020
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We present marine geoscientific data from Store Koldewey Trough, one of the largest glacial troughs offshore NE Greenland, to reconstruct the ice drainage pathways, ice sheet extent and ice stream dynamics of this sector during the last glacial and deglaciation. The complex landform assemblage in the trough reflects a dynamic retreat with several periods of stabilization and readvances, interrupting the deglaciation. Estimates indicate that the ice front locally retreated between 80–400 m/year.
Lisa Claire Orme, Xavier Crosta, Arto Miettinen, Dmitry V. Divine, Katrine Husum, Elisabeth Isaksson, Lukas Wacker, Rahul Mohan, Olivier Ther, and Minoru Ikehara
Clim. Past, 16, 1451–1467, https://doi.org/10.5194/cp-16-1451-2020, https://doi.org/10.5194/cp-16-1451-2020, 2020
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A record of past sea temperature in the Indian sector of the Southern Ocean, spanning the last 14 200 years, has been developed by analysis of fossil diatoms in marine sediment. During the late deglaciation the reconstructed temperature changes were highly similar to those over Antarctica, most likely due to a reorganisation of global ocean and atmospheric circulation. During the last 11 600 years temperatures gradually cooled and became increasingly variable.
Jan Erik Arndt, Robert D. Larter, Claus-Dieter Hillenbrand, Simon H. Sørli, Matthias Forwick, James A. Smith, and Lukas Wacker
The Cryosphere, 14, 2115–2135, https://doi.org/10.5194/tc-14-2115-2020, https://doi.org/10.5194/tc-14-2115-2020, 2020
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We interpret landforms on the seabed and investigate sediment cores to improve our understanding of the past ice sheet development in this poorly understood part of Antarctica. Recent crack development of the Brunt ice shelf has raised concerns about its stability and the security of the British research station Halley. We describe ramp-shaped bedforms that likely represent ice shelf grounding and stabilization locations of the past that may reflect an analogue to the process going on now.
Gabriel West, Darrell S. Kaufman, Francesco Muschitiello, Matthias Forwick, Jens Matthiessen, Jutta Wollenburg, and Matt O'Regan
Geochronology, 1, 53–67, https://doi.org/10.5194/gchron-1-53-2019, https://doi.org/10.5194/gchron-1-53-2019, 2019
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We report amino acid racemization analyses of foraminifera from well-dated sediment cores from the Yermak Plateau, Arctic Ocean. Sample ages are compared with model predictions, revealing that the rates of racemization generally conform to a global compilation of racemization rates at deep-sea sites. These results highlight the need for further studies to test and explain the origin of the purportedly high rate of racemization indicated by previous analyses of central Arctic sediments.
M. Łącka, M. Zajączkowski, M. Forwick, and W. Szczuciński
Clim. Past, 11, 587–603, https://doi.org/10.5194/cp-11-587-2015, https://doi.org/10.5194/cp-11-587-2015, 2015
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Storfjordrenna was deglaciated about 13,950 cal yr BP. During the transition from the sub-glacial to glaciomarine setting, Arctic Waters dominated its hydrography. However, the waters were not uniformly cold and experienced several warmer spells. Atlantic Water began to flow onto the shelves off Svalbard and into Storfjorden during the early Holocene, leading to progressive warming and significant glacial melting. A surface-water cooling and freshening occurred in late Holocene.
S. M. P. Berben, K. Husum, P. Cabedo-Sanz, and S. T. Belt
Clim. Past, 10, 181–198, https://doi.org/10.5194/cp-10-181-2014, https://doi.org/10.5194/cp-10-181-2014, 2014
D. E. Groot, S. Aagaard-Sørensen, and K. Husum
Clim. Past, 10, 51–62, https://doi.org/10.5194/cp-10-51-2014, https://doi.org/10.5194/cp-10-51-2014, 2014
C. V. Dylmer, J. Giraudeau, V. Hanquiez, and K. Husum
Biogeosciences Discuss., https://doi.org/10.5194/bgd-10-15077-2013, https://doi.org/10.5194/bgd-10-15077-2013, 2013
Revised manuscript has not been submitted
C. V. Dylmer, J. Giraudeau, F. Eynaud, K. Husum, and A. De Vernal
Clim. Past, 9, 1505–1518, https://doi.org/10.5194/cp-9-1505-2013, https://doi.org/10.5194/cp-9-1505-2013, 2013
Related subject area
Subject: Continental Surface Processes | Archive: Marine Archives | Timescale: Holocene
Mid–late Holocene event registered in organo-siliciclastic sediments of Lagoa Salgada carbonate system, southeast Brazil
Precipitation as the main driver of Neoglacial fluctuations of Gualas glacier, Northern Patagonian Icefield
Anna Paula Soares Cruz, Cátia Fernandes Barbosa, Angélica Maria Blanco, Camila Areias de Oliveira, Cleverson Guizan Silva, and José Carlos Sícoli Seoane
Clim. Past, 15, 1363–1373, https://doi.org/10.5194/cp-15-1363-2019, https://doi.org/10.5194/cp-15-1363-2019, 2019
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Salgada Lagoon is a hypersaline lake investigated for its sedimentation history in order to interpret past climatic events. We studied the geochemistry of sediments from 5800 years ago until the present and found sea level oscillations, different climatic conditions, and proxies for vegetation cover and productivity, which highlight a dry event 4200 years ago that matches a global event of the same age, marking changes to favorable conditions for carbonates microbial mats and stromatolites.
S. Bertrand, K. A. Hughen, F. Lamy, J.-B. W. Stuut, F. Torrejón, and C. B. Lange
Clim. Past, 8, 519–534, https://doi.org/10.5194/cp-8-519-2012, https://doi.org/10.5194/cp-8-519-2012, 2012
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Short summary
Marine geologic data from NE Greenland provide new information about the behavior of the Greenland Ice Sheet from the last glacial period to present. Seafloor landforms suggest that a large, fast-flowing ice stream moved south through southern Dove Bugt. This region is believed to have been deglaciated from at least 11.4 ka cal BP. Ice in an adjacent fjord, Bessel Fjord, may have retreated to its modern position by 7.1 ka cal BP, and the ice halted or readvanced multiple times upon deglaciation.
Marine geologic data from NE Greenland provide new information about the behavior of the...
