Multiyear Fast Ice along the Taymyr Peninsula, Siberia
ABSTRACT. A 20 km wide zone of fast ice, reaching offshore to the 20 m isobath and sealing off coastal embayments along the Taymyr Peninsula, survived until at least 23 November 1993, becoming multiyear land-fast sea ice (MLSI). Barrier islands show characteristic recurved spits indicating dominant...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.571.4179 2023-05-15T14:19:42+02:00 Multiyear Fast Ice along the Taymyr Peninsula, Siberia The Pennsylvania State University CiteSeerX Archives 1995 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.4179 http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.4179 http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf Key words multiyear land-fast sea ice incipient ice shelves sediment entrainment interglacial/glacial transition Siberia Laptev Sea text 1995 ftciteseerx 2016-01-08T12:32:52Z ABSTRACT. A 20 km wide zone of fast ice, reaching offshore to the 20 m isobath and sealing off coastal embayments along the Taymyr Peninsula, survived until at least 23 November 1993, becoming multiyear land-fast sea ice (MLSI). Barrier islands show characteristic recurved spits indicating dominant southeastward direction of longshore transport in intermittent years. At the time of observation, the fast ice was undisturbed, only heaving vertically with tides, protecting the coastal zone from wave reworking. The 1 to 2 m thick ice cover affects light and oxygen, creating profound effects on marine life in the zone. A herd of walrus, in other summers reported to haul out on local beaches, was displaced by the fast ice. We saw no evidence for sediment loading of the ice by rivers or for eolian deposition on ice. MLSI is considered an incipient ice shelf, which could grow in thickness and strength in successive winters. Salinity and δ18O profiles in ice cores from some smaller areas of MLSI provide a record of environmental conditions during the first year of ice growth, such as local hydrography and contribution of congealed snow to the solid fast ice. On ice charts we found no record of waxing and waning MLSI in the area, and do not know whether the observed ice survived the next summer. Since arctic ice shelves have developed from MLSI in the past, the observed phenomenon permits a view of how transitions from interglacial to full glacial conditions can begin. Text Arctic Arctic Ice Shelf Ice Shelves laptev Laptev Sea Sea ice Taymyr Taymyr Peninsula Siberia walrus* Unknown Arctic Barrier Islands ENVELOPE(-92.283,-92.283,62.784,62.784) Laptev Sea Taymyr ENVELOPE(89.987,89.987,68.219,68.219) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words multiyear land-fast sea ice incipient ice shelves sediment entrainment interglacial/glacial transition Siberia Laptev Sea |
spellingShingle |
Key words multiyear land-fast sea ice incipient ice shelves sediment entrainment interglacial/glacial transition Siberia Laptev Sea Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
topic_facet |
Key words multiyear land-fast sea ice incipient ice shelves sediment entrainment interglacial/glacial transition Siberia Laptev Sea |
description |
ABSTRACT. A 20 km wide zone of fast ice, reaching offshore to the 20 m isobath and sealing off coastal embayments along the Taymyr Peninsula, survived until at least 23 November 1993, becoming multiyear land-fast sea ice (MLSI). Barrier islands show characteristic recurved spits indicating dominant southeastward direction of longshore transport in intermittent years. At the time of observation, the fast ice was undisturbed, only heaving vertically with tides, protecting the coastal zone from wave reworking. The 1 to 2 m thick ice cover affects light and oxygen, creating profound effects on marine life in the zone. A herd of walrus, in other summers reported to haul out on local beaches, was displaced by the fast ice. We saw no evidence for sediment loading of the ice by rivers or for eolian deposition on ice. MLSI is considered an incipient ice shelf, which could grow in thickness and strength in successive winters. Salinity and δ18O profiles in ice cores from some smaller areas of MLSI provide a record of environmental conditions during the first year of ice growth, such as local hydrography and contribution of congealed snow to the solid fast ice. On ice charts we found no record of waxing and waning MLSI in the area, and do not know whether the observed ice survived the next summer. Since arctic ice shelves have developed from MLSI in the past, the observed phenomenon permits a view of how transitions from interglacial to full glacial conditions can begin. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
title_short |
Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
title_full |
Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
title_fullStr |
Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
title_full_unstemmed |
Multiyear Fast Ice along the Taymyr Peninsula, Siberia |
title_sort |
multiyear fast ice along the taymyr peninsula, siberia |
publishDate |
1995 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.4179 http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf |
long_lat |
ENVELOPE(-92.283,-92.283,62.784,62.784) ENVELOPE(89.987,89.987,68.219,68.219) |
geographic |
Arctic Barrier Islands Laptev Sea Taymyr |
geographic_facet |
Arctic Barrier Islands Laptev Sea Taymyr |
genre |
Arctic Arctic Ice Shelf Ice Shelves laptev Laptev Sea Sea ice Taymyr Taymyr Peninsula Siberia walrus* |
genre_facet |
Arctic Arctic Ice Shelf Ice Shelves laptev Laptev Sea Sea ice Taymyr Taymyr Peninsula Siberia walrus* |
op_source |
http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.4179 http://pubs.aina.ucalgary.ca/arctic/arctic48-4-359.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766291458388656128 |