Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes
Arctic amplification of climate warming is intensifying the thaw and coastal erosion of the widespread and carbon-rich Siberian Ice Complex Deposits (ICD). Despite the potential for altering long-term carbon dynamics in the Arctic, the susceptibility of organic carbon (OC) to degradation as the ICD...
Published in: | Permafrost and Periglacial Processes |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://research.vu.nl/en/publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 https://doi.org/10.1002/ppp.1815 https://hdl.handle.net/1871.1/58f87f44-e3f3-4e09-9556-01e98b6aa117 http://www.scopus.com/inward/record.url?scp=84908274407&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84908274407&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 2024-09-30T14:28:03+00:00 Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes Sánchez-García, L. Vonk, J. E. Charkin, A. N. Kosmach, D. Dudarev, O. V. Semiletov, I. P. Gustafsson, O. 2014-07-01 https://research.vu.nl/en/publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 https://doi.org/10.1002/ppp.1815 https://hdl.handle.net/1871.1/58f87f44-e3f3-4e09-9556-01e98b6aa117 http://www.scopus.com/inward/record.url?scp=84908274407&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84908274407&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 info:eu-repo/semantics/restrictedAccess Sánchez-García , L , Vonk , J E , Charkin , A N , Kosmach , D , Dudarev , O V , Semiletov , I P & Gustafsson , O 2014 , ' Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes ' , Permafrost and Periglacial Processes , vol. 25 , no. 3 , pp. 172-183 . https://doi.org/10.1002/ppp.1815 Ice Complex Deposits Isotopic-molecular markers Thermal degradation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2014 ftvuamstcris https://doi.org/10.1002/ppp.1815 2024-09-12T00:17:36Z Arctic amplification of climate warming is intensifying the thaw and coastal erosion of the widespread and carbon-rich Siberian Ice Complex Deposits (ICD). Despite the potential for altering long-term carbon dynamics in the Arctic, the susceptibility of organic carbon (OC) to degradation as the ICD thaw is poorly characterised. This study identifies signs of OC degradation in three Siberian ICD regimes of coastal erosion through elemental, isotopic and molecular analyses. The degree of erosion appears to determine the extent of degradation. The moisture-limited and beach-protected ICD bluff near Buor-Khaya Cape, characterised by thermokarst mounds (baydzherakhs), represents a dormant regime with limited ongoing degradation. Conversely, the more exposed ICD scarps on eroding riverbanks (Olenek Channel, Lena Delta) and coastal slopes (Muostakh Island) showed more pronounced signs of ongoing OC decay. Different parameters suggest that degradation can partially explain the shift of the OC signature with 14 C age in the thawing ICD. Exposure time, degree of erosion, slope gradient and moisture conditions appear to be key factors determining the degradation propensity of OC in exposed ICD. These field results document the lability of OC in ICD upon thaw and illustrate the potential for transferring old OC into the rapidly cycling atmosphere-biosphere carbon pools. Article in Journal/Newspaper Arctic Arctic laptev Laptev Sea lena delta Permafrost and Periglacial Processes Thermokarst Vrije Universiteit Amsterdam (VU): Research Portal Arctic Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Khaya ENVELOPE(135.167,135.167,60.567,60.567) Laptev Sea Permafrost and Periglacial Processes 25 3 172 183 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Ice Complex Deposits Isotopic-molecular markers Thermal degradation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Ice Complex Deposits Isotopic-molecular markers Thermal degradation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Sánchez-García, L. Vonk, J. E. Charkin, A. N. Kosmach, D. Dudarev, O. V. Semiletov, I. P. Gustafsson, O. Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
topic_facet |
Ice Complex Deposits Isotopic-molecular markers Thermal degradation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Arctic amplification of climate warming is intensifying the thaw and coastal erosion of the widespread and carbon-rich Siberian Ice Complex Deposits (ICD). Despite the potential for altering long-term carbon dynamics in the Arctic, the susceptibility of organic carbon (OC) to degradation as the ICD thaw is poorly characterised. This study identifies signs of OC degradation in three Siberian ICD regimes of coastal erosion through elemental, isotopic and molecular analyses. The degree of erosion appears to determine the extent of degradation. The moisture-limited and beach-protected ICD bluff near Buor-Khaya Cape, characterised by thermokarst mounds (baydzherakhs), represents a dormant regime with limited ongoing degradation. Conversely, the more exposed ICD scarps on eroding riverbanks (Olenek Channel, Lena Delta) and coastal slopes (Muostakh Island) showed more pronounced signs of ongoing OC decay. Different parameters suggest that degradation can partially explain the shift of the OC signature with 14 C age in the thawing ICD. Exposure time, degree of erosion, slope gradient and moisture conditions appear to be key factors determining the degradation propensity of OC in exposed ICD. These field results document the lability of OC in ICD upon thaw and illustrate the potential for transferring old OC into the rapidly cycling atmosphere-biosphere carbon pools. |
format |
Article in Journal/Newspaper |
author |
Sánchez-García, L. Vonk, J. E. Charkin, A. N. Kosmach, D. Dudarev, O. V. Semiletov, I. P. Gustafsson, O. |
author_facet |
Sánchez-García, L. Vonk, J. E. Charkin, A. N. Kosmach, D. Dudarev, O. V. Semiletov, I. P. Gustafsson, O. |
author_sort |
Sánchez-García, L. |
title |
Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
title_short |
Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
title_full |
Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
title_fullStr |
Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
title_full_unstemmed |
Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes |
title_sort |
characterisation of three regimes of collapsing arctic ice complex deposits on the se laptev sea coast using biomarkers and dual carbon isotopes |
publishDate |
2014 |
url |
https://research.vu.nl/en/publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 https://doi.org/10.1002/ppp.1815 https://hdl.handle.net/1871.1/58f87f44-e3f3-4e09-9556-01e98b6aa117 http://www.scopus.com/inward/record.url?scp=84908274407&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84908274407&partnerID=8YFLogxK |
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 Arctic laptev Laptev Sea lena delta Permafrost and Periglacial Processes Thermokarst |
genre_facet |
Arctic Arctic laptev Laptev Sea lena delta Permafrost and Periglacial Processes Thermokarst |
op_source |
Sánchez-García , L , Vonk , J E , Charkin , A N , Kosmach , D , Dudarev , O V , Semiletov , I P & Gustafsson , O 2014 , ' Characterisation of three regimes of collapsing arctic ice complex deposits on the SE Laptev Sea coast using biomarkers and dual carbon isotopes ' , Permafrost and Periglacial Processes , vol. 25 , no. 3 , pp. 172-183 . https://doi.org/10.1002/ppp.1815 |
op_relation |
https://research.vu.nl/en/publications/58f87f44-e3f3-4e09-9556-01e98b6aa117 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/ppp.1815 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
25 |
container_issue |
3 |
container_start_page |
172 |
op_container_end_page |
183 |
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1811633911213588480 |