Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic.
The geomorphology of the western Siberian Arctic coast represents a significant departure from the global trend of Holocene delta formation by major rivers. The Ob' and Yenisei Rivers in western Siberia drain into the Arctic Ocean via estuaries 900 and 500 km long, respectively. Eastern Siberia...
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Geological Society of America
2007
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Online Access: | http://dro.dur.ac.uk/3946/ https://doi.org/10.1130/G23437A.1 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:3946 2023-05-15T14:45:38+02:00 Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. Whitehouse, P. L. Allen, M. B. Milne, G. A. 2007-10-01 http://dro.dur.ac.uk/3946/ https://doi.org/10.1130/G23437A.1 unknown Geological Society of America dro:3946 issn:0091-7613 issn: 1943-2682 doi:10.1130/G23437A.1 http://dro.dur.ac.uk/3946/ http://dx.doi.org/10.1130/G23437A.1 Geological Society of America, P.O. Box 9140, Boulder, CO 80301-9140 USA (http://www.geosociety.org) Geology, 2007, Vol.35(8), pp.747-750 [Peer Reviewed Journal] Relative sea level Glacial isostatic adjustment Delta Arctic Siberia Article PeerReviewed 2007 ftunivdurham https://doi.org/10.1130/G23437A.1 2020-05-28T22:26:35Z The geomorphology of the western Siberian Arctic coast represents a significant departure from the global trend of Holocene delta formation by major rivers. The Ob' and Yenisei Rivers in western Siberia drain into the Arctic Ocean via estuaries 900 and 500 km long, respectively. Eastern Siberian rivers such as the Lena, Indigirka, and Kolyma terminate at significant marine deltas. We show that this spatial variation in coastal geomorphology can be explained by the glacial isostatic adjustment of the region. The development and collapse of a peripheral bulge in western Siberia, associated with the glaciation and subsequent deglaciation of the Eurasian ice sheets, led to a distinct spatial variation in sea-level change that continues to this day. In particular, since the marked decrease in global-scale ice melting ca. 7 ka, our model predicts a sea-level rise at the mouth of the Ob' River of 14 m, compared to a rise of 6 m at the mouth of the Lena River, which ceased at 3 ka. We propose that the enhanced sea-level rise in the western Siberian Arctic associated with peripheral bulge subsidence has prevented the establishment of marine deltas at the mouths of the Ob' and Yenisei Rivers. We conclude that regional variations in relative sea-level change driven by glacial isostatic adjustment should be considered when interpreting large-scale coastal morphology and deltaic stratigraphy, which is normally assumed to correlate with eustatic fluctuations. Article in Journal/Newspaper Arctic Arctic Ocean lena river ob river Siberia Durham University: Durham Research Online Arctic Arctic Ocean Indigirka ENVELOPE(149.609,149.609,70.929,70.929) Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Geology 35 8 747 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Relative sea level Glacial isostatic adjustment Delta Arctic Siberia |
spellingShingle |
Relative sea level Glacial isostatic adjustment Delta Arctic Siberia Whitehouse, P. L. Allen, M. B. Milne, G. A. Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
topic_facet |
Relative sea level Glacial isostatic adjustment Delta Arctic Siberia |
description |
The geomorphology of the western Siberian Arctic coast represents a significant departure from the global trend of Holocene delta formation by major rivers. The Ob' and Yenisei Rivers in western Siberia drain into the Arctic Ocean via estuaries 900 and 500 km long, respectively. Eastern Siberian rivers such as the Lena, Indigirka, and Kolyma terminate at significant marine deltas. We show that this spatial variation in coastal geomorphology can be explained by the glacial isostatic adjustment of the region. The development and collapse of a peripheral bulge in western Siberia, associated with the glaciation and subsequent deglaciation of the Eurasian ice sheets, led to a distinct spatial variation in sea-level change that continues to this day. In particular, since the marked decrease in global-scale ice melting ca. 7 ka, our model predicts a sea-level rise at the mouth of the Ob' River of 14 m, compared to a rise of 6 m at the mouth of the Lena River, which ceased at 3 ka. We propose that the enhanced sea-level rise in the western Siberian Arctic associated with peripheral bulge subsidence has prevented the establishment of marine deltas at the mouths of the Ob' and Yenisei Rivers. We conclude that regional variations in relative sea-level change driven by glacial isostatic adjustment should be considered when interpreting large-scale coastal morphology and deltaic stratigraphy, which is normally assumed to correlate with eustatic fluctuations. |
format |
Article in Journal/Newspaper |
author |
Whitehouse, P. L. Allen, M. B. Milne, G. A. |
author_facet |
Whitehouse, P. L. Allen, M. B. Milne, G. A. |
author_sort |
Whitehouse, P. L. |
title |
Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
title_short |
Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
title_full |
Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
title_fullStr |
Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
title_full_unstemmed |
Glacial isostatic adjustment as a control on coastal processes : an example from the Siberian Arctic. |
title_sort |
glacial isostatic adjustment as a control on coastal processes : an example from the siberian arctic. |
publisher |
Geological Society of America |
publishDate |
2007 |
url |
http://dro.dur.ac.uk/3946/ https://doi.org/10.1130/G23437A.1 |
long_lat |
ENVELOPE(149.609,149.609,70.929,70.929) ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Arctic Arctic Ocean Indigirka Kolyma |
geographic_facet |
Arctic Arctic Ocean Indigirka Kolyma |
genre |
Arctic Arctic Ocean lena river ob river Siberia |
genre_facet |
Arctic Arctic Ocean lena river ob river Siberia |
op_source |
Geology, 2007, Vol.35(8), pp.747-750 [Peer Reviewed Journal] |
op_relation |
dro:3946 issn:0091-7613 issn: 1943-2682 doi:10.1130/G23437A.1 http://dro.dur.ac.uk/3946/ http://dx.doi.org/10.1130/G23437A.1 |
op_rights |
Geological Society of America, P.O. Box 9140, Boulder, CO 80301-9140 USA (http://www.geosociety.org) |
op_doi |
https://doi.org/10.1130/G23437A.1 |
container_title |
Geology |
container_volume |
35 |
container_issue |
8 |
container_start_page |
747 |
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1766317011797803008 |