Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera.
River discharge of Ob and Yenisei to the Kara Sea is highly variable on seasonal and interannual time scales. River water dominates the shallow bottom water near the river mouths, making it warmer and less saline but seasonally and interannually more changeable than bottom water on the deeper shelf....
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:1827 2023-05-15T16:59:53+02:00 Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. Simstich, J. Erlenkeuser, H. Harms, I. Spielhagen, R. F. Stanovoy, V. 2005 application/pdf http://eprints.esc.cam.ac.uk/1827/ http://eprints.esc.cam.ac.uk/1827/1/Modern_and_Holocene_-_Simstich.pdf https://doi.org/10.1111/j.1502-3885.2005.tb01099.x en eng http://eprints.esc.cam.ac.uk/1827/1/Modern_and_Holocene_-_Simstich.pdf Simstich, J. and Erlenkeuser, H. and Harms, I. and Spielhagen, R. F. and Stanovoy, V. (2005) Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. Boreas, 34. pp. 252-263. DOI https://doi.org/10.1111/j.1502-3885.2005.tb01099.x <https://doi.org/10.1111/j.1502-3885.2005.tb01099.x> 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2005 ftucambridgeesc https://doi.org/10.1111/j.1502-3885.2005.tb01099.x 2020-08-27T18:09:03Z River discharge of Ob and Yenisei to the Kara Sea is highly variable on seasonal and interannual time scales. River water dominates the shallow bottom water near the river mouths, making it warmer and less saline but seasonally and interannually more changeable than bottom water on the deeper shelf. This hydrographic pattern shows up in measurements and modelling, and in stable isotope records (d18O, d13C) along the growth axis of bivalve shells and in multiple analyses of single benthic foraminiferal shells. Average isotope ratios increase, but sample-internal variability decreases with water depth and distance from river mouths. However, isotope records of bivalves and foraminifera of a sediment core from a former submarine channel of Yenisei River reveal a different pattern. The retreat of the river mouth from this site due to early Holocene sea level rise led to increasing average isotope values up core, but not to the expected decrease of the in-sample isotope variability. Southward advection of cold saline water along the palaeo-river channel probably obscured the hydrographic variability during the early Holocene. Later, when sediment filled the channel, the hydrographic variability at the core location remained low, because the shallowing proceeded synchronously with the retreat of the river mouth. Article in Journal/Newspaper Kara Sea Siberia University of Cambridge, Department of Earth Sciences: ESC Publications Kara Sea Yenisei River ENVELOPE(84.738,84.738,69.718,69.718) Boreas 34 3 252 263 |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems Simstich, J. Erlenkeuser, H. Harms, I. Spielhagen, R. F. Stanovoy, V. Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
description |
River discharge of Ob and Yenisei to the Kara Sea is highly variable on seasonal and interannual time scales. River water dominates the shallow bottom water near the river mouths, making it warmer and less saline but seasonally and interannually more changeable than bottom water on the deeper shelf. This hydrographic pattern shows up in measurements and modelling, and in stable isotope records (d18O, d13C) along the growth axis of bivalve shells and in multiple analyses of single benthic foraminiferal shells. Average isotope ratios increase, but sample-internal variability decreases with water depth and distance from river mouths. However, isotope records of bivalves and foraminifera of a sediment core from a former submarine channel of Yenisei River reveal a different pattern. The retreat of the river mouth from this site due to early Holocene sea level rise led to increasing average isotope values up core, but not to the expected decrease of the in-sample isotope variability. Southward advection of cold saline water along the palaeo-river channel probably obscured the hydrographic variability during the early Holocene. Later, when sediment filled the channel, the hydrographic variability at the core location remained low, because the shallowing proceeded synchronously with the retreat of the river mouth. |
format |
Article in Journal/Newspaper |
author |
Simstich, J. Erlenkeuser, H. Harms, I. Spielhagen, R. F. Stanovoy, V. |
author_facet |
Simstich, J. Erlenkeuser, H. Harms, I. Spielhagen, R. F. Stanovoy, V. |
author_sort |
Simstich, J. |
title |
Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
title_short |
Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
title_full |
Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
title_fullStr |
Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
title_full_unstemmed |
Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
title_sort |
modern and holocene hydrographic characteristics of the shallow kara sea shelf (siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. |
publishDate |
2005 |
url |
http://eprints.esc.cam.ac.uk/1827/ http://eprints.esc.cam.ac.uk/1827/1/Modern_and_Holocene_-_Simstich.pdf https://doi.org/10.1111/j.1502-3885.2005.tb01099.x |
long_lat |
ENVELOPE(84.738,84.738,69.718,69.718) |
geographic |
Kara Sea Yenisei River |
geographic_facet |
Kara Sea Yenisei River |
genre |
Kara Sea Siberia |
genre_facet |
Kara Sea Siberia |
op_relation |
http://eprints.esc.cam.ac.uk/1827/1/Modern_and_Holocene_-_Simstich.pdf Simstich, J. and Erlenkeuser, H. and Harms, I. and Spielhagen, R. F. and Stanovoy, V. (2005) Modern and Holocene hydrographic characteristics of the shallow Kara Sea shelf (Siberia) as reflected by stable isotopes of bivalves and benthic foraminifera. Boreas, 34. pp. 252-263. DOI https://doi.org/10.1111/j.1502-3885.2005.tb01099.x <https://doi.org/10.1111/j.1502-3885.2005.tb01099.x> |
op_doi |
https://doi.org/10.1111/j.1502-3885.2005.tb01099.x |
container_title |
Boreas |
container_volume |
34 |
container_issue |
3 |
container_start_page |
252 |
op_container_end_page |
263 |
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1766052450359312384 |