Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska
As Arctic warming continues and permafrost degrades, more organic carbon (OC) will be decomposed in high northern latitudes. Still, uncertainties remain in the quality and quantity of OC stored in permafrost. This study presents OC data from permafrost deposits on the Baldwin Peninsula, West-Alaska....
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Laboratoire EDYTEM 0 UMR5204
2018
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ftawi:oai:epic.awi.de:47509 2023-05-15T15:03:03+02:00 Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska Jongejans, Loeka L. Strauss, Jens Lenz, Josefine Peterse, Francien Mangelsdorf, Kai Fuchs, Matthias Grosse, Guido Deline, Philip Bodin, Xavier Ravanel, Ludovic 2018 application/pdf https://epic.awi.de/id/eprint/47509/ https://epic.awi.de/id/eprint/47509/1/Jongejans_EUCOP2018_extended_abstract.pdf https://eucop2018.sciencesconf.org/data/EUCOP5_2018_Book_of_abstracts.pdf https://hdl.handle.net/10013/epic.d3188c43-c5e3-4620-8d44-df08ed01d39a https://hdl.handle.net/ unknown Laboratoire EDYTEM 0 UMR5204 https://epic.awi.de/id/eprint/47509/1/Jongejans_EUCOP2018_extended_abstract.pdf https://hdl.handle.net/ Jongejans, L. L. orcid:0000-0002-0383-4567 , Strauss, J. orcid:0000-0003-4678-4982 , Lenz, J. orcid:0000-0002-4050-3169 , Peterse, F. , Mangelsdorf, K. , Fuchs, M. orcid:0000-0003-3529-8284 and Grosse, G. orcid:0000-0001-5895-2141 (2018) Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska / P. Deline , X. Bodin and L. Ravanel (editors) , 5th European Conference On Permafrost, Chamonix, France, 23 June 2018 - 1 July 2018 . hdl:10013/epic.d3188c43-c5e3-4620-8d44-df08ed01d39a EPIC35th European Conference On Permafrost, Chamonix, France, 2018-06-23-2018-07-01Le Bourget-du-Lac, Laboratoire EDYTEM 0 UMR5204 Conference notRev 2018 ftawi 2021-12-24T15:43:57Z As Arctic warming continues and permafrost degrades, more organic carbon (OC) will be decomposed in high northern latitudes. Still, uncertainties remain in the quality and quantity of OC stored in permafrost. This study presents OC data from permafrost deposits on the Baldwin Peninsula, West-Alaska. We analyzed cryostratigraphical, biogeochemical and biomarker parameters of yedoma- and drained thermokarst lake basin (DTLB) deposits as well as thermokarst lake sediments to identify the size and quality of OC pools in ice-rich permafrost. Here we show that two thirds of soil OC in this region are stored in frozen DTLB deposits and that the lake sediments have the highest volumetric OC content. The n-alkane distribution shows, however, that OC stored in yedoma is of higher quality than that stored in DTLB deposits. These findings highlight the importance of molecular OC analysis for determining the potential future greenhouse gas emissions from thawing permafrost. Conference Object Arctic Ice permafrost Thermokarst Alaska Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Baldwin ENVELOPE(163.300,163.300,-72.250,-72.250) |
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 |
As Arctic warming continues and permafrost degrades, more organic carbon (OC) will be decomposed in high northern latitudes. Still, uncertainties remain in the quality and quantity of OC stored in permafrost. This study presents OC data from permafrost deposits on the Baldwin Peninsula, West-Alaska. We analyzed cryostratigraphical, biogeochemical and biomarker parameters of yedoma- and drained thermokarst lake basin (DTLB) deposits as well as thermokarst lake sediments to identify the size and quality of OC pools in ice-rich permafrost. Here we show that two thirds of soil OC in this region are stored in frozen DTLB deposits and that the lake sediments have the highest volumetric OC content. The n-alkane distribution shows, however, that OC stored in yedoma is of higher quality than that stored in DTLB deposits. These findings highlight the importance of molecular OC analysis for determining the potential future greenhouse gas emissions from thawing permafrost. |
author2 |
Deline, Philip Bodin, Xavier Ravanel, Ludovic |
format |
Conference Object |
author |
Jongejans, Loeka L. Strauss, Jens Lenz, Josefine Peterse, Francien Mangelsdorf, Kai Fuchs, Matthias Grosse, Guido |
spellingShingle |
Jongejans, Loeka L. Strauss, Jens Lenz, Josefine Peterse, Francien Mangelsdorf, Kai Fuchs, Matthias Grosse, Guido Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
author_facet |
Jongejans, Loeka L. Strauss, Jens Lenz, Josefine Peterse, Francien Mangelsdorf, Kai Fuchs, Matthias Grosse, Guido |
author_sort |
Jongejans, Loeka L. |
title |
Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
title_short |
Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
title_full |
Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
title_fullStr |
Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
title_full_unstemmed |
Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska |
title_sort |
organic carbon stored in a thermokarst affected landscape on baldwin peninsula, alaska |
publisher |
Laboratoire EDYTEM 0 UMR5204 |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47509/ https://epic.awi.de/id/eprint/47509/1/Jongejans_EUCOP2018_extended_abstract.pdf https://eucop2018.sciencesconf.org/data/EUCOP5_2018_Book_of_abstracts.pdf https://hdl.handle.net/10013/epic.d3188c43-c5e3-4620-8d44-df08ed01d39a https://hdl.handle.net/ |
long_lat |
ENVELOPE(163.300,163.300,-72.250,-72.250) |
geographic |
Arctic Baldwin |
geographic_facet |
Arctic Baldwin |
genre |
Arctic Ice permafrost Thermokarst Alaska |
genre_facet |
Arctic Ice permafrost Thermokarst Alaska |
op_source |
EPIC35th European Conference On Permafrost, Chamonix, France, 2018-06-23-2018-07-01Le Bourget-du-Lac, Laboratoire EDYTEM 0 UMR5204 |
op_relation |
https://epic.awi.de/id/eprint/47509/1/Jongejans_EUCOP2018_extended_abstract.pdf https://hdl.handle.net/ Jongejans, L. L. orcid:0000-0002-0383-4567 , Strauss, J. orcid:0000-0003-4678-4982 , Lenz, J. orcid:0000-0002-4050-3169 , Peterse, F. , Mangelsdorf, K. , Fuchs, M. orcid:0000-0003-3529-8284 and Grosse, G. orcid:0000-0001-5895-2141 (2018) Organic carbon stored in a thermokarst affected landscape on Baldwin Peninsula, Alaska / P. Deline , X. Bodin and L. Ravanel (editors) , 5th European Conference On Permafrost, Chamonix, France, 23 June 2018 - 1 July 2018 . hdl:10013/epic.d3188c43-c5e3-4620-8d44-df08ed01d39a |
_version_ |
1766334960431529984 |