Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea
The stratigraphic data provide direct evidences and opportunities to address questions concerning advances and retreats of the Ross Ice Sheet and Ice Shelf, but there are significant uncertainties in the chronologies and interpre- tation. Here, we present and compare stratigraphic records of several...
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ftawi:oai:epic.awi.de:47382 2024-09-15T17:41:39+00:00 Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea Chen, Zhihua Ju, Mengshan Ge, Shulan Tang, Zheng Huang, Yuanhui Tiedemann, Ralf Lembke-Jene, Lester 2018 https://epic.awi.de/id/eprint/47382/ https://meetingorganizer.copernicus.org/EGU2018/EGU2018-7948.pdf https://hdl.handle.net/10013/epic.cdb82803-3cd8-42b1-9aee-b16a1db4e59c unknown Chen, Z. , Ju, M. , Ge, S. , Tang, Z. , Huang, Y. , Tiedemann, R. orcid:0000-0001-7211-8049 and Lembke-Jene, L. orcid:0000-0002-6873-8533 (2018) Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea , European Geosciences Union (EGU) General Assembly, Vienna, Austria, 8 April 2018 - 13 April 2018 . hdl:10013/epic.cdb82803-3cd8-42b1-9aee-b16a1db4e59c EPIC3European Geosciences Union (EGU) General Assembly, Vienna, Austria, 2018-04-08-2018-04-13 Conference notRev 2018 ftawi 2024-06-24T04:19:47Z The stratigraphic data provide direct evidences and opportunities to address questions concerning advances and retreats of the Ross Ice Sheet and Ice Shelf, but there are significant uncertainties in the chronologies and interpre- tation. Here, we present and compare stratigraphic records of several sediment cores dredged from the continental shelf and slope of the Ross Sea. The sedimentological and geochemical records reveal the Circumpolar Deep Wa- ter (CDW) upwelled, mixed with more surface waters and contained higher oxygen during interglacial periods, while sedimentary facies and paleoenironmental proxies indicate synchronous and rapid retreats of (ice sheet) grounding-line and (ice shelf front) calving line occurred on the continental shelf especially during Holocene. The stability of marine-based margins of the Antarctic Ice Sheet was evidently controlled by postglacial warm deep-water incursions onto the shelf in the past. Conference Object Antarc* Antarctic Ice Sheet Ice Shelf Ross Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The stratigraphic data provide direct evidences and opportunities to address questions concerning advances and retreats of the Ross Ice Sheet and Ice Shelf, but there are significant uncertainties in the chronologies and interpre- tation. Here, we present and compare stratigraphic records of several sediment cores dredged from the continental shelf and slope of the Ross Sea. The sedimentological and geochemical records reveal the Circumpolar Deep Wa- ter (CDW) upwelled, mixed with more surface waters and contained higher oxygen during interglacial periods, while sedimentary facies and paleoenironmental proxies indicate synchronous and rapid retreats of (ice sheet) grounding-line and (ice shelf front) calving line occurred on the continental shelf especially during Holocene. The stability of marine-based margins of the Antarctic Ice Sheet was evidently controlled by postglacial warm deep-water incursions onto the shelf in the past. |
format |
Conference Object |
author |
Chen, Zhihua Ju, Mengshan Ge, Shulan Tang, Zheng Huang, Yuanhui Tiedemann, Ralf Lembke-Jene, Lester |
spellingShingle |
Chen, Zhihua Ju, Mengshan Ge, Shulan Tang, Zheng Huang, Yuanhui Tiedemann, Ralf Lembke-Jene, Lester Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
author_facet |
Chen, Zhihua Ju, Mengshan Ge, Shulan Tang, Zheng Huang, Yuanhui Tiedemann, Ralf Lembke-Jene, Lester |
author_sort |
Chen, Zhihua |
title |
Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
title_short |
Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
title_full |
Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
title_fullStr |
Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
title_full_unstemmed |
Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea |
title_sort |
sediment records of past ice sheet dynamics and ice-sea interactions in the ross sea |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47382/ https://meetingorganizer.copernicus.org/EGU2018/EGU2018-7948.pdf https://hdl.handle.net/10013/epic.cdb82803-3cd8-42b1-9aee-b16a1db4e59c |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Ross Sea |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Ross Sea |
op_source |
EPIC3European Geosciences Union (EGU) General Assembly, Vienna, Austria, 2018-04-08-2018-04-13 |
op_relation |
Chen, Z. , Ju, M. , Ge, S. , Tang, Z. , Huang, Y. , Tiedemann, R. orcid:0000-0001-7211-8049 and Lembke-Jene, L. orcid:0000-0002-6873-8533 (2018) Sediment records of past ice sheet dynamics and ice-sea interactions in the Ross Sea , European Geosciences Union (EGU) General Assembly, Vienna, Austria, 8 April 2018 - 13 April 2018 . hdl:10013/epic.cdb82803-3cd8-42b1-9aee-b16a1db4e59c |
_version_ |
1810487884817367040 |