Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012
Sea ice is an important vehicle for sediment transport in the Arctic Ocean. On the Laptev Sea shelf (Siberian Arctic) large volumes of sediment-laden sea ice are formed during freeze-up in autumn, then exported and transported across the Arctic Ocean into Fram Strait where it partly melts. The incor...
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PERGAMON-ELSEVIER SCIENCE LTD
2017
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Online Access: | https://epic.awi.de/id/eprint/44814/ https://epic.awi.de/id/eprint/44814/1/Wegner_CSR2017_LaptevSedimentFastIce.pdf https://hdl.handle.net/10013/epic.51055 https://hdl.handle.net/10013/epic.51055.d001 |
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ftawi:oai:epic.awi.de:44814 2023-05-15T14:53:00+02:00 Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 Wegner, Carolyn Wittbrodt, Kerstin Hölemann, Jens Janout, Markus Krumpen, Thomas Selyuzhenok, Lera Novikhin, A. Polyakova, Ye. Krykova, Irina Kassens, Heidemarie Timokhov, Leonid 2017-06-01 application/pdf https://epic.awi.de/id/eprint/44814/ https://epic.awi.de/id/eprint/44814/1/Wegner_CSR2017_LaptevSedimentFastIce.pdf https://hdl.handle.net/10013/epic.51055 https://hdl.handle.net/10013/epic.51055.d001 unknown PERGAMON-ELSEVIER SCIENCE LTD https://epic.awi.de/id/eprint/44814/1/Wegner_CSR2017_LaptevSedimentFastIce.pdf https://hdl.handle.net/10013/epic.51055.d001 Wegner, C. , Wittbrodt, K. , Hölemann, J. orcid:0000-0001-5102-4086 , Janout, M. orcid:0000-0003-4908-2855 , Krumpen, T. orcid:0000-0001-6234-8756 , Selyuzhenok, L. , Novikhin, A. , Polyakova, Y. , Krykova, I. , Kassens, H. and Timokhov, L. (2017) Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 , Continental Shelf Research . doi:10.1016/j.csr.2017.04.010 <https://doi.org/10.1016/j.csr.2017.04.010> , hdl:10013/epic.51055 EPIC3Continental Shelf Research, PERGAMON-ELSEVIER SCIENCE LTD, ISSN: 0278-4343 Article isiRev 2017 ftawi https://doi.org/10.1016/j.csr.2017.04.010 2021-12-24T15:43:03Z Sea ice is an important vehicle for sediment transport in the Arctic Ocean. On the Laptev Sea shelf (Siberian Arctic) large volumes of sediment-laden sea ice are formed during freeze-up in autumn, then exported and transported across the Arctic Ocean into Fram Strait where it partly melts. The incorporated sediments are released, settle on the sea floor, and serve as a proxy for ice-transport in the Arctic Ocean on geological time scales. However, the formation process of sediment-laden ice in the source area has been scarcely observed. Sediment-laden ice was sampled during a helicopter-based expedition to the Laptev Sea in March/April 2012. Sedimentological, biogeochemical and biological studies on the ice core as well as in the water column give insights into the formation process and, in combination with oceanographic process studies, on matter fluxes beneath the sea ice. Based on satellite images and ice drift back-trajectories the sediments were likely incorporated into the sea ice during a mid-winter coastal polynya near one of the main outlets of the Lena River, which is supported by the presence of abundant freshwater diatoms typical for the Lena River phytoplankton, and subsequently transported about 80 km northwards onto the shelf. Assuming ice growth of 12 –19 cm during this period and mean suspended matter content in the newly formed ice of 91.9 mg l− 1 suggests that a minimum sediment load of 8.4×10 4 t might have been incorporated into sea ice. Extrapolating these sediment loads for the entire Lena Delta region suggests that at least 65% of the estimated sediment loads which are incorporated during freeze-up, and up to 10% of the annually exported sediment load may be incorporated during an event such as described in this paper. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait ice core laptev Laptev Sea lena delta lena river Phytoplankton Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Laptev Sea Continental Shelf Research 141 1 10 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Sea ice is an important vehicle for sediment transport in the Arctic Ocean. On the Laptev Sea shelf (Siberian Arctic) large volumes of sediment-laden sea ice are formed during freeze-up in autumn, then exported and transported across the Arctic Ocean into Fram Strait where it partly melts. The incorporated sediments are released, settle on the sea floor, and serve as a proxy for ice-transport in the Arctic Ocean on geological time scales. However, the formation process of sediment-laden ice in the source area has been scarcely observed. Sediment-laden ice was sampled during a helicopter-based expedition to the Laptev Sea in March/April 2012. Sedimentological, biogeochemical and biological studies on the ice core as well as in the water column give insights into the formation process and, in combination with oceanographic process studies, on matter fluxes beneath the sea ice. Based on satellite images and ice drift back-trajectories the sediments were likely incorporated into the sea ice during a mid-winter coastal polynya near one of the main outlets of the Lena River, which is supported by the presence of abundant freshwater diatoms typical for the Lena River phytoplankton, and subsequently transported about 80 km northwards onto the shelf. Assuming ice growth of 12 –19 cm during this period and mean suspended matter content in the newly formed ice of 91.9 mg l− 1 suggests that a minimum sediment load of 8.4×10 4 t might have been incorporated into sea ice. Extrapolating these sediment loads for the entire Lena Delta region suggests that at least 65% of the estimated sediment loads which are incorporated during freeze-up, and up to 10% of the annually exported sediment load may be incorporated during an event such as described in this paper. |
format |
Article in Journal/Newspaper |
author |
Wegner, Carolyn Wittbrodt, Kerstin Hölemann, Jens Janout, Markus Krumpen, Thomas Selyuzhenok, Lera Novikhin, A. Polyakova, Ye. Krykova, Irina Kassens, Heidemarie Timokhov, Leonid |
spellingShingle |
Wegner, Carolyn Wittbrodt, Kerstin Hölemann, Jens Janout, Markus Krumpen, Thomas Selyuzhenok, Lera Novikhin, A. Polyakova, Ye. Krykova, Irina Kassens, Heidemarie Timokhov, Leonid Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
author_facet |
Wegner, Carolyn Wittbrodt, Kerstin Hölemann, Jens Janout, Markus Krumpen, Thomas Selyuzhenok, Lera Novikhin, A. Polyakova, Ye. Krykova, Irina Kassens, Heidemarie Timokhov, Leonid |
author_sort |
Wegner, Carolyn |
title |
Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
title_short |
Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
title_full |
Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
title_fullStr |
Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
title_full_unstemmed |
Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 |
title_sort |
sediment entrainment into sea ice and transport in the transpolar drift: a case study from the laptev sea in winter 2011/2012 |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/44814/ https://epic.awi.de/id/eprint/44814/1/Wegner_CSR2017_LaptevSedimentFastIce.pdf https://hdl.handle.net/10013/epic.51055 https://hdl.handle.net/10013/epic.51055.d001 |
geographic |
Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea |
genre |
Arctic Arctic Ocean Fram Strait ice core laptev Laptev Sea lena delta lena river Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Fram Strait ice core laptev Laptev Sea lena delta lena river Phytoplankton Sea ice |
op_source |
EPIC3Continental Shelf Research, PERGAMON-ELSEVIER SCIENCE LTD, ISSN: 0278-4343 |
op_relation |
https://epic.awi.de/id/eprint/44814/1/Wegner_CSR2017_LaptevSedimentFastIce.pdf https://hdl.handle.net/10013/epic.51055.d001 Wegner, C. , Wittbrodt, K. , Hölemann, J. orcid:0000-0001-5102-4086 , Janout, M. orcid:0000-0003-4908-2855 , Krumpen, T. orcid:0000-0001-6234-8756 , Selyuzhenok, L. , Novikhin, A. , Polyakova, Y. , Krykova, I. , Kassens, H. and Timokhov, L. (2017) Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea in winter 2011/2012 , Continental Shelf Research . doi:10.1016/j.csr.2017.04.010 <https://doi.org/10.1016/j.csr.2017.04.010> , hdl:10013/epic.51055 |
op_doi |
https://doi.org/10.1016/j.csr.2017.04.010 |
container_title |
Continental Shelf Research |
container_volume |
141 |
container_start_page |
1 |
op_container_end_page |
10 |
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1766324420501045248 |