Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea
Climate warming is amplified in the land-sea system of the East Siberian Arctic, which also holds large pools of vulnerable carbon in permafrost. This coastal area is strongly influenced by sediment and carbon transport from both its large rivers and extensive erosion of Pleistocene permafrost along...
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2011
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ftdoajarticles:oai:doaj.org/article:ac7d6d735176408aaf84a339df133bc7 2023-05-15T15:17:30+02:00 Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea A. N. Charkin O. V. Dudarev I. P. Semiletov A. V. Kruhmalev J. E. Vonk L. Sánchez-García E. Karlsson Ö. Gustafsson 2011-09-01T00:00:00Z https://doi.org/10.5194/bg-8-2581-2011 https://doaj.org/article/ac7d6d735176408aaf84a339df133bc7 EN eng Copernicus Publications http://www.biogeosciences.net/8/2581/2011/bg-8-2581-2011.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-8-2581-2011 1726-4170 1726-4189 https://doaj.org/article/ac7d6d735176408aaf84a339df133bc7 Biogeosciences, Vol 8, Iss 9, Pp 2581-2594 (2011) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/bg-8-2581-2011 2023-01-08T01:33:41Z Climate warming is amplified in the land-sea system of the East Siberian Arctic, which also holds large pools of vulnerable carbon in permafrost. This coastal area is strongly influenced by sediment and carbon transport from both its large rivers and extensive erosion of Pleistocene permafrost along its coastline. This study is investigating the coastal fate of the sediment and organic carbon delivered to the Buor-Khaya Gulf, which is the first recipient of the overwhelming fluvial discharge from the Lena River and is additionally receiving large input from extensive erosion of the coastal ice-complex (permafrost a.k.a. Yedoma; loess soil with high organic carbon content). Both water column suspended particulate matter (SPM) and surface sediments were sampled at about 250 oceanographic stations in the Gulf in this multi-year effort, including one winter campaign, and analyzed for the distribution and sorting of sediment size, organic carbon content, and stable carbon isotope signals. The composition of the surface sediment suggests an overwhelmingly terrestrial contribution from both river and coastal erosion. The objective of this paper is to improve our understanding of the seasonal (i.e., winter vs summer) and interannual variability of these coastal sedimentation processes and the dynamics of organic carbon (OC) distribution in both the water column SPM and the surface sediments of the Buor-Khaya Gulf. Based on data collected during several years in the period 2000–2008, two different sedimentation regimes were revealed for the Buor-Khaya Gulf, the relative importance of each at a given time depend on hydrometeorological conditions, the Lena River water discharge and sea-ice regime: Type 1 erosion-accumulation and Type 2 accumulation. The Type 1 erosion-accumulation sedimentation regime is typical (2000–2006) for the ice-free period of the year (here considered in detail for August 2005). Under such conditions terrigenous sources of SPM and particulate organic carbon (POC) stem predominantly from river ... Article in Journal/Newspaper Arctic Ice laptev Laptev Sea lena river permafrost Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Khaya ENVELOPE(135.167,135.167,60.567,60.567) Laptev Sea Biogeosciences 8 9 2581 2594 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 A. N. Charkin O. V. Dudarev I. P. Semiletov A. V. Kruhmalev J. E. Vonk L. Sánchez-García E. Karlsson Ö. Gustafsson Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Climate warming is amplified in the land-sea system of the East Siberian Arctic, which also holds large pools of vulnerable carbon in permafrost. This coastal area is strongly influenced by sediment and carbon transport from both its large rivers and extensive erosion of Pleistocene permafrost along its coastline. This study is investigating the coastal fate of the sediment and organic carbon delivered to the Buor-Khaya Gulf, which is the first recipient of the overwhelming fluvial discharge from the Lena River and is additionally receiving large input from extensive erosion of the coastal ice-complex (permafrost a.k.a. Yedoma; loess soil with high organic carbon content). Both water column suspended particulate matter (SPM) and surface sediments were sampled at about 250 oceanographic stations in the Gulf in this multi-year effort, including one winter campaign, and analyzed for the distribution and sorting of sediment size, organic carbon content, and stable carbon isotope signals. The composition of the surface sediment suggests an overwhelmingly terrestrial contribution from both river and coastal erosion. The objective of this paper is to improve our understanding of the seasonal (i.e., winter vs summer) and interannual variability of these coastal sedimentation processes and the dynamics of organic carbon (OC) distribution in both the water column SPM and the surface sediments of the Buor-Khaya Gulf. Based on data collected during several years in the period 2000–2008, two different sedimentation regimes were revealed for the Buor-Khaya Gulf, the relative importance of each at a given time depend on hydrometeorological conditions, the Lena River water discharge and sea-ice regime: Type 1 erosion-accumulation and Type 2 accumulation. The Type 1 erosion-accumulation sedimentation regime is typical (2000–2006) for the ice-free period of the year (here considered in detail for August 2005). Under such conditions terrigenous sources of SPM and particulate organic carbon (POC) stem predominantly from river ... |
format |
Article in Journal/Newspaper |
author |
A. N. Charkin O. V. Dudarev I. P. Semiletov A. V. Kruhmalev J. E. Vonk L. Sánchez-García E. Karlsson Ö. Gustafsson |
author_facet |
A. N. Charkin O. V. Dudarev I. P. Semiletov A. V. Kruhmalev J. E. Vonk L. Sánchez-García E. Karlsson Ö. Gustafsson |
author_sort |
A. N. Charkin |
title |
Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
title_short |
Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
title_full |
Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
title_fullStr |
Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
title_full_unstemmed |
Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf: the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea |
title_sort |
seasonal and interannual variability of sedimentation and organic matter distribution in the buor-khaya gulf: the primary recipient of input from lena river and coastal erosion in the southeast laptev sea |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/bg-8-2581-2011 https://doaj.org/article/ac7d6d735176408aaf84a339df133bc7 |
long_lat |
ENVELOPE(127.803,127.803,72.287,72.287) ENVELOPE(135.167,135.167,60.567,60.567) |
geographic |
Arctic Buor-Khaya Khaya Laptev Sea |
geographic_facet |
Arctic Buor-Khaya Khaya Laptev Sea |
genre |
Arctic Ice laptev Laptev Sea lena river permafrost Sea ice |
genre_facet |
Arctic Ice laptev Laptev Sea lena river permafrost Sea ice |
op_source |
Biogeosciences, Vol 8, Iss 9, Pp 2581-2594 (2011) |
op_relation |
http://www.biogeosciences.net/8/2581/2011/bg-8-2581-2011.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-8-2581-2011 1726-4170 1726-4189 https://doaj.org/article/ac7d6d735176408aaf84a339df133bc7 |
op_doi |
https://doi.org/10.5194/bg-8-2581-2011 |
container_title |
Biogeosciences |
container_volume |
8 |
container_issue |
9 |
container_start_page |
2581 |
op_container_end_page |
2594 |
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1766347735436361728 |