Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments
In the unglaciated areas of Antarctica, lake sediments act as archives of the regional environmental and climatic history. In most cases, the records are restricted to the Holocene. Amongst the few exceptions are lakes in the McMurdo Dry Valleys, southern Victoria Land, which are known to have remai...
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Niedersächsische Staats- und Universitätsbibliothek
2009
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Online Access: | http://kups.ub.uni-koeln.de/volltexte/2009/2809/pdf/Dissertation_Ortlepp.pdf http://kups.ub.uni-koeln.de/volltexte/2009/2809/index.html http://d-nb.info/997053569/34 http://nbn-resolving.de/urn:nbn:de:hbz:38-28096 |
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ftgbv:oai:gbv.de:opac-de-7:ppn:612192008 2023-05-15T14:01:55+02:00 Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments Ortlepp, Sabrina 2009 electronic Elektronische Ressource electronic resource remote Online-Ressource (PDF-Datei: 121 S., 42,8 MB) http://kups.ub.uni-koeln.de/volltexte/2009/2809/pdf/Dissertation_Ortlepp.pdf http://kups.ub.uni-koeln.de/volltexte/2009/2809/index.html http://d-nb.info/997053569/34 http://nbn-resolving.de/urn:nbn:de:hbz:38-28096 eng eng Niedersächsische Staats- und Universitätsbibliothek 550 38.19 16,13 ggo geo 2009 ftgbv 2016-01-30T08:27:36Z In the unglaciated areas of Antarctica, lake sediments act as archives of the regional environmental and climatic history. In most cases, the records are restricted to the Holocene. Amongst the few exceptions are lakes in the McMurdo Dry Valleys, southern Victoria Land, which are known to have remained mostly ice-free during the Last Glacial Maximum. Within the scope of an U.S.-American-German expedition in austral summer 2002/2003, several sediment cores were recovered from the three major lakes in the Taylor Valley: lakes Fryxell, Hoare, and Bonney. In order to reconstruct the late Quaternary regional environmental and climate history, sedimentological, biogeochemical, mineralogical, and chronological investigations were conducted on the sediment sequences recovered from Lake Hoare (core Lz1020) and East Lake Bonney (core Lz1023) within the scope of this thesis. Sediment cores from Lake Hoare with a maximum length of 2.3 m mainly consist of coarse-grained material and penetrate back into the late Weichselian, when Taylor Valley was occupied by the large proglacial Lake Washburn. This lake was dammed by the advanced Ross Sea ice sheet at the valley outlet and was mainly fed by meltwater of the ice sheet. During the Pleistocene-Holocene transition, enhanced evaporation led to a significant lake level drop of Lake Washburn . Univ., Diss.--Köln, 2009 Systemvoraussetzungen: Acrobat reader Other/Unknown Material Antarc* Antarctica Ice Sheet McMurdo Dry Valleys Ross Sea Sea ice Victoria Land Georg-August-Universität Göttingen: GOEDOC Austral Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) East Lake ENVELOPE(142.682,142.682,-66.995,-66.995) Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Lake Bonney ENVELOPE(-25.588,-25.588,-80.361,-80.361) Lake Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) McMurdo Dry Valleys Ross Sea Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) Victoria Land Washburn ENVELOPE(-86.133,-86.133,-77.617,-77.617) |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: GOEDOC |
op_collection_id |
ftgbv |
language |
English |
topic |
550 38.19 16,13 ggo geo |
spellingShingle |
550 38.19 16,13 ggo geo Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
topic_facet |
550 38.19 16,13 ggo geo |
description |
In the unglaciated areas of Antarctica, lake sediments act as archives of the regional environmental and climatic history. In most cases, the records are restricted to the Holocene. Amongst the few exceptions are lakes in the McMurdo Dry Valleys, southern Victoria Land, which are known to have remained mostly ice-free during the Last Glacial Maximum. Within the scope of an U.S.-American-German expedition in austral summer 2002/2003, several sediment cores were recovered from the three major lakes in the Taylor Valley: lakes Fryxell, Hoare, and Bonney. In order to reconstruct the late Quaternary regional environmental and climate history, sedimentological, biogeochemical, mineralogical, and chronological investigations were conducted on the sediment sequences recovered from Lake Hoare (core Lz1020) and East Lake Bonney (core Lz1023) within the scope of this thesis. Sediment cores from Lake Hoare with a maximum length of 2.3 m mainly consist of coarse-grained material and penetrate back into the late Weichselian, when Taylor Valley was occupied by the large proglacial Lake Washburn. This lake was dammed by the advanced Ross Sea ice sheet at the valley outlet and was mainly fed by meltwater of the ice sheet. During the Pleistocene-Holocene transition, enhanced evaporation led to a significant lake level drop of Lake Washburn . Univ., Diss.--Köln, 2009 Systemvoraussetzungen: Acrobat reader |
author2 |
Ortlepp, Sabrina |
title |
Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
title_short |
Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
title_full |
Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
title_fullStr |
Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
title_full_unstemmed |
Late quaternary environmental history of Taylor Valley, southern Victoria Land, Antarctica, reconstructed by a multidisciplinary study of lake sediments |
title_sort |
late quaternary environmental history of taylor valley, southern victoria land, antarctica, reconstructed by a multidisciplinary study of lake sediments |
publisher |
Niedersächsische Staats- und Universitätsbibliothek |
publishDate |
2009 |
url |
http://kups.ub.uni-koeln.de/volltexte/2009/2809/pdf/Dissertation_Ortlepp.pdf http://kups.ub.uni-koeln.de/volltexte/2009/2809/index.html http://d-nb.info/997053569/34 http://nbn-resolving.de/urn:nbn:de:hbz:38-28096 |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(142.682,142.682,-66.995,-66.995) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(-25.588,-25.588,-80.361,-80.361) ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(163.000,163.000,-77.617,-77.617) ENVELOPE(-86.133,-86.133,-77.617,-77.617) |
geographic |
Austral Bonney East Lake Fryxell Hoare Lake Bonney Lake Hoare McMurdo Dry Valleys Ross Sea Taylor Valley Victoria Land Washburn |
geographic_facet |
Austral Bonney East Lake Fryxell Hoare Lake Bonney Lake Hoare McMurdo Dry Valleys Ross Sea Taylor Valley Victoria Land Washburn |
genre |
Antarc* Antarctica Ice Sheet McMurdo Dry Valleys Ross Sea Sea ice Victoria Land |
genre_facet |
Antarc* Antarctica Ice Sheet McMurdo Dry Valleys Ross Sea Sea ice Victoria Land |
_version_ |
1766271972792074240 |