A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM)
The response of Arctic Ocean biogeochemistry to subsurface flow driven by permafrost thaw is poorly understood. We present dissolved chloride and water isotopic data from the Chukchi Sea Shelf sediments that reveal the presence of a meteoric subsurface flow enriched in cations with a radiogenic Sr f...
Published in: | Geochemistry, Geophysics, Geosystems |
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Main Authors: | , , , , , , , , , , , , , |
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Language: | English |
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2021
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/a-pulse-of-meteoric-subsurface-fluid-discharging-into-the-chukchi-sea-during-the-early-holocene-thermal-maximum-ehtm(0fd5d055-ab6f-41d9-bee5-78108dc4d1ab).html https://doi.org/10.1029/2021GC009750 https://research-repository.st-andrews.ac.uk/bitstream/10023/24775/1/Kim_2021_GGG_Pulse_FinalPubVersion.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/0fd5d055-ab6f-41d9-bee5-78108dc4d1ab 2024-06-23T07:50:10+00:00 A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) Kim, Ji-Hoon Hong, Wei-Li Torres, Marta E. Ryu, Jong-Sik Kang, Moo-Hee Han, Dukki Nam, Seung-Il Hur, Jin Koh, Dong-Chan Niessen, Frank Lee, Dong-Hun Jang, Kwangchul Buchanan Rae, James William Chen, Meilian 2021-07-29 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/a-pulse-of-meteoric-subsurface-fluid-discharging-into-the-chukchi-sea-during-the-early-holocene-thermal-maximum-ehtm(0fd5d055-ab6f-41d9-bee5-78108dc4d1ab).html https://doi.org/10.1029/2021GC009750 https://research-repository.st-andrews.ac.uk/bitstream/10023/24775/1/Kim_2021_GGG_Pulse_FinalPubVersion.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/a-pulse-of-meteoric-subsurface-fluid-discharging-into-the-chukchi-sea-during-the-early-holocene-thermal-maximum-ehtm(0fd5d055-ab6f-41d9-bee5-78108dc4d1ab).html info:eu-repo/semantics/openAccess Kim , J-H , Hong , W-L , Torres , M E , Ryu , J-S , Kang , M-H , Han , D , Nam , S-I , Hur , J , Koh , D-C , Niessen , F , Lee , D-H , Jang , K , Buchanan Rae , J W & Chen , M 2021 , ' A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) ' , Geochemistry, Geophysics, Geosystems , vol. 22 , no. 8 , e2021GC009750 . https://doi.org/10.1029/2021GC009750 Subsurface meteoric fluid discharge Arctic element/carbon cycle Permafrost EHTM Chukchi Sea article 2021 ftunstandrewcris https://doi.org/10.1029/2021GC009750 2024-06-13T01:16:46Z The response of Arctic Ocean biogeochemistry to subsurface flow driven by permafrost thaw is poorly understood. We present dissolved chloride and water isotopic data from the Chukchi Sea Shelf sediments that reveal the presence of a meteoric subsurface flow enriched in cations with a radiogenic Sr fingerprint. This subsurface fluid is also enriched in dissolved inorganic carbon and methane that bear isotopic compositions indicative of a carbon reservoir modified by reactions in a closed system. Such fluid characteristics are in stark contrast with those from other sites in the Chukchi Sea where the pore water composition shows no sign of meteoric input, but reflect typical biogeochemical reactions associated with early diagenetic sequences in marine sediment. The most likely source of the observed subsurface flow at the Chukchi Sea Shelf is from the degradation of permafrost that had extended to the shelf region during the Last Glacial Maximum. Our data suggest that the permafrost-driven subsurface flow most likely took place during the 2-3 o C warming in the Early Holocene Thermal Maximum (EHTM). This time scale is supported by numerical simulation of pore fluid profiles, which indicate that a minimum of several thousand years must have passed since the cessation of the subsurface methane-bearing fluid flow. Article in Journal/Newspaper Arctic Arctic Ocean Chukchi Chukchi Sea permafrost University of St Andrews: Research Portal Arctic Arctic Ocean Chukchi Sea Geochemistry, Geophysics, Geosystems 22 8 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Subsurface meteoric fluid discharge Arctic element/carbon cycle Permafrost EHTM Chukchi Sea |
spellingShingle |
Subsurface meteoric fluid discharge Arctic element/carbon cycle Permafrost EHTM Chukchi Sea Kim, Ji-Hoon Hong, Wei-Li Torres, Marta E. Ryu, Jong-Sik Kang, Moo-Hee Han, Dukki Nam, Seung-Il Hur, Jin Koh, Dong-Chan Niessen, Frank Lee, Dong-Hun Jang, Kwangchul Buchanan Rae, James William Chen, Meilian A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
topic_facet |
Subsurface meteoric fluid discharge Arctic element/carbon cycle Permafrost EHTM Chukchi Sea |
description |
The response of Arctic Ocean biogeochemistry to subsurface flow driven by permafrost thaw is poorly understood. We present dissolved chloride and water isotopic data from the Chukchi Sea Shelf sediments that reveal the presence of a meteoric subsurface flow enriched in cations with a radiogenic Sr fingerprint. This subsurface fluid is also enriched in dissolved inorganic carbon and methane that bear isotopic compositions indicative of a carbon reservoir modified by reactions in a closed system. Such fluid characteristics are in stark contrast with those from other sites in the Chukchi Sea where the pore water composition shows no sign of meteoric input, but reflect typical biogeochemical reactions associated with early diagenetic sequences in marine sediment. The most likely source of the observed subsurface flow at the Chukchi Sea Shelf is from the degradation of permafrost that had extended to the shelf region during the Last Glacial Maximum. Our data suggest that the permafrost-driven subsurface flow most likely took place during the 2-3 o C warming in the Early Holocene Thermal Maximum (EHTM). This time scale is supported by numerical simulation of pore fluid profiles, which indicate that a minimum of several thousand years must have passed since the cessation of the subsurface methane-bearing fluid flow. |
format |
Article in Journal/Newspaper |
author |
Kim, Ji-Hoon Hong, Wei-Li Torres, Marta E. Ryu, Jong-Sik Kang, Moo-Hee Han, Dukki Nam, Seung-Il Hur, Jin Koh, Dong-Chan Niessen, Frank Lee, Dong-Hun Jang, Kwangchul Buchanan Rae, James William Chen, Meilian |
author_facet |
Kim, Ji-Hoon Hong, Wei-Li Torres, Marta E. Ryu, Jong-Sik Kang, Moo-Hee Han, Dukki Nam, Seung-Il Hur, Jin Koh, Dong-Chan Niessen, Frank Lee, Dong-Hun Jang, Kwangchul Buchanan Rae, James William Chen, Meilian |
author_sort |
Kim, Ji-Hoon |
title |
A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
title_short |
A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
title_full |
A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
title_fullStr |
A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
title_full_unstemmed |
A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) |
title_sort |
pulse of meteoric subsurface fluid discharging into the chukchi sea during the early holocene thermal maximum (ehtm) |
publishDate |
2021 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-pulse-of-meteoric-subsurface-fluid-discharging-into-the-chukchi-sea-during-the-early-holocene-thermal-maximum-ehtm(0fd5d055-ab6f-41d9-bee5-78108dc4d1ab).html https://doi.org/10.1029/2021GC009750 https://research-repository.st-andrews.ac.uk/bitstream/10023/24775/1/Kim_2021_GGG_Pulse_FinalPubVersion.pdf |
geographic |
Arctic Arctic Ocean Chukchi Sea |
geographic_facet |
Arctic Arctic Ocean Chukchi Sea |
genre |
Arctic Arctic Ocean Chukchi Chukchi Sea permafrost |
genre_facet |
Arctic Arctic Ocean Chukchi Chukchi Sea permafrost |
op_source |
Kim , J-H , Hong , W-L , Torres , M E , Ryu , J-S , Kang , M-H , Han , D , Nam , S-I , Hur , J , Koh , D-C , Niessen , F , Lee , D-H , Jang , K , Buchanan Rae , J W & Chen , M 2021 , ' A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) ' , Geochemistry, Geophysics, Geosystems , vol. 22 , no. 8 , e2021GC009750 . https://doi.org/10.1029/2021GC009750 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-pulse-of-meteoric-subsurface-fluid-discharging-into-the-chukchi-sea-during-the-early-holocene-thermal-maximum-ehtm(0fd5d055-ab6f-41d9-bee5-78108dc4d1ab).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2021GC009750 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
22 |
container_issue |
8 |
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1802641033216917504 |