Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach
Herschel Island is the remnant of an ice-push moraine, formed during the farthest advance of the Laurentide Ice Sheet in the late Wisconsin. The island is located in the Canadian Beaufort Sea, in the northwestern part of the Yukon Territory. A marine depression (Herschel Basin), southeastern adjacen...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.875609 2023-05-15T14:54:45+02:00 Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach Riedel, Thorsten MEDIAN LATITUDE: 69.549005 * MEDIAN LONGITUDE: -139.322135 * SOUTH-BOUND LATITUDE: 69.491400 * WEST-BOUND LONGITUDE: -140.510000 * NORTH-BOUND LATITUDE: 69.596000 * EAST-BOUND LONGITUDE: -138.867000 * DATE/TIME START: 2016-04-16T00:00:00 * DATE/TIME END: 2016-05-02T00:00:00 2017-05-23 application/zip, 16 datasets https://doi.pangaea.de/10.1594/PANGAEA.875609 https://doi.org/10.1594/PANGAEA.875609 en eng PANGAEA Riedel, Thorsten (2017): Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach. Master Thesis, University of Bremen, 76 pp https://doi.pangaea.de/10.1594/PANGAEA.875609 https://doi.org/10.1594/PANGAEA.875609 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.875609 2023-01-20T07:33:57Z Herschel Island is the remnant of an ice-push moraine, formed during the farthest advance of the Laurentide Ice Sheet in the late Wisconsin. The island is located in the Canadian Beaufort Sea, in the northwestern part of the Yukon Territory. A marine depression (Herschel Basin), southeastern adjacent to Herschel Island, acts as a sink of organic matter (OM) derived from various sources. The main objective of this master thesis was to determine the amount of OM, derived from Herschel Island, in the deposits of Herschel Basin. Rapidly increasing mean annual air temperatures (MAAT) in high latitude areas raise awareness of a changing Arctic climate and consequences for the Arctic carbon cycle. Biomarker analyses of soil and sediment samples from various study sites on and around Herschel Island show that sediments in Herschel Basin are of prevailing terrigenous origin. Approximately 60 % of the OM in the surface sediments of Herschel Basin and the adjacent nearshore area can be assigned to eroded material from Herschel Island. Investigations on a sediment core from the centre of the basin suggest enhanced erosion rates and increased supply by OM from Herschel Island in the upper section of the core. Results of biomarker analyses of this thesis corroborate a progressing change of the Arctic climate, amplified by positive carbon feedback mechanisms. Dataset Arctic Beaufort Sea Herschel Herschel Island Ice Ice Sheet permafrost Yukon PANGAEA - Data Publisher for Earth & Environmental Science Arctic Yukon Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-140.510000,-138.867000,69.596000,69.491400) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Herschel Island is the remnant of an ice-push moraine, formed during the farthest advance of the Laurentide Ice Sheet in the late Wisconsin. The island is located in the Canadian Beaufort Sea, in the northwestern part of the Yukon Territory. A marine depression (Herschel Basin), southeastern adjacent to Herschel Island, acts as a sink of organic matter (OM) derived from various sources. The main objective of this master thesis was to determine the amount of OM, derived from Herschel Island, in the deposits of Herschel Basin. Rapidly increasing mean annual air temperatures (MAAT) in high latitude areas raise awareness of a changing Arctic climate and consequences for the Arctic carbon cycle. Biomarker analyses of soil and sediment samples from various study sites on and around Herschel Island show that sediments in Herschel Basin are of prevailing terrigenous origin. Approximately 60 % of the OM in the surface sediments of Herschel Basin and the adjacent nearshore area can be assigned to eroded material from Herschel Island. Investigations on a sediment core from the centre of the basin suggest enhanced erosion rates and increased supply by OM from Herschel Island in the upper section of the core. Results of biomarker analyses of this thesis corroborate a progressing change of the Arctic climate, amplified by positive carbon feedback mechanisms. |
format |
Dataset |
author |
Riedel, Thorsten |
spellingShingle |
Riedel, Thorsten Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
author_facet |
Riedel, Thorsten |
author_sort |
Riedel, Thorsten |
title |
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
title_short |
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
title_full |
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
title_fullStr |
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
title_full_unstemmed |
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach |
title_sort |
assessing permafrost erosion in the canadian beaufort sea, herschel island - a biomarker approach |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.875609 https://doi.org/10.1594/PANGAEA.875609 |
op_coverage |
MEDIAN LATITUDE: 69.549005 * MEDIAN LONGITUDE: -139.322135 * SOUTH-BOUND LATITUDE: 69.491400 * WEST-BOUND LONGITUDE: -140.510000 * NORTH-BOUND LATITUDE: 69.596000 * EAST-BOUND LONGITUDE: -138.867000 * DATE/TIME START: 2016-04-16T00:00:00 * DATE/TIME END: 2016-05-02T00:00:00 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-140.510000,-138.867000,69.596000,69.491400) |
geographic |
Arctic Yukon Herschel Island |
geographic_facet |
Arctic Yukon Herschel Island |
genre |
Arctic Beaufort Sea Herschel Herschel Island Ice Ice Sheet permafrost Yukon |
genre_facet |
Arctic Beaufort Sea Herschel Herschel Island Ice Ice Sheet permafrost Yukon |
op_relation |
Riedel, Thorsten (2017): Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - a biomarker approach. Master Thesis, University of Bremen, 76 pp https://doi.pangaea.de/10.1594/PANGAEA.875609 https://doi.org/10.1594/PANGAEA.875609 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.875609 |
_version_ |
1766326505291382784 |