On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land)
Recent developments of GPS (Global Positioning System) technology provide a new powerful tool to study ice shelfocean dynamical interactions. Here we present results from feasibility tests on the use of static GPS measurements to locate grounding zones and study their impact on the ice shelf mechani...
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Online Access: | http://hdl.handle.net/11380/741070 |
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ftunivmodena:oai:iris.unimore.it:11380/741070 2024-04-21T07:48:03+00:00 On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) A. Bondesan CAPRA, Alessandro A. Gubellini J. L. Tison A., Bondesan Capra, Alessandro A., Gubellini J. L., Tison 1994 STAMPA http://hdl.handle.net/11380/741070 eng eng volume:17 firstpage:123 lastpage:129 journal:GEOGRAFIA FISICA E DINAMICA QUATERNARIA http://hdl.handle.net/11380/741070 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0028681543 info:eu-repo/semantics/openAccess GPS tidal antarctic ice shelf Hells gate info:eu-repo/semantics/article 1994 ftunivmodena 2024-03-28T01:19:49Z Recent developments of GPS (Global Positioning System) technology provide a new powerful tool to study ice shelfocean dynamical interactions. Here we present results from feasibility tests on the use of static GPS measurements to locate grounding zones and study their impact on the ice shelf mechanical response. The Hells Gate Ice Shelf has been chosen as a study case owing to its vicinity from Terra Nova Bay Station and to the peculiar problems it raises to glaciologists and geophysicists. Technical and analytical problems are discussed and 5 short time lapse records, in various places at the ice shelf surface, are interpreted. Most of the survey stations appear to react fully hydrostatically to the tidal forcing, even during a secondary maximum of only a few centimeters amplitude. The most upstream station 4, located in a strait between Vegetation Island and the Northern Foothills, shows departure from hydrostatic equilibrium in accordance with a scheme of bedrock valley sides effects. The GPS curve recorded suggests that the ice shelf might not always behave elastically in grounding zones as also testified by periods of intense microseismic actiity into the ice shelf during part of the day. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Victoria Land Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
institution |
Open Polar |
collection |
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
op_collection_id |
ftunivmodena |
language |
English |
topic |
GPS tidal antarctic ice shelf Hells gate |
spellingShingle |
GPS tidal antarctic ice shelf Hells gate A. Bondesan CAPRA, Alessandro A. Gubellini J. L. Tison On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
topic_facet |
GPS tidal antarctic ice shelf Hells gate |
description |
Recent developments of GPS (Global Positioning System) technology provide a new powerful tool to study ice shelfocean dynamical interactions. Here we present results from feasibility tests on the use of static GPS measurements to locate grounding zones and study their impact on the ice shelf mechanical response. The Hells Gate Ice Shelf has been chosen as a study case owing to its vicinity from Terra Nova Bay Station and to the peculiar problems it raises to glaciologists and geophysicists. Technical and analytical problems are discussed and 5 short time lapse records, in various places at the ice shelf surface, are interpreted. Most of the survey stations appear to react fully hydrostatically to the tidal forcing, even during a secondary maximum of only a few centimeters amplitude. The most upstream station 4, located in a strait between Vegetation Island and the Northern Foothills, shows departure from hydrostatic equilibrium in accordance with a scheme of bedrock valley sides effects. The GPS curve recorded suggests that the ice shelf might not always behave elastically in grounding zones as also testified by periods of intense microseismic actiity into the ice shelf during part of the day. |
author2 |
A., Bondesan Capra, Alessandro A., Gubellini J. L., Tison |
format |
Article in Journal/Newspaper |
author |
A. Bondesan CAPRA, Alessandro A. Gubellini J. L. Tison |
author_facet |
A. Bondesan CAPRA, Alessandro A. Gubellini J. L. Tison |
author_sort |
A. Bondesan |
title |
On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
title_short |
On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
title_full |
On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
title_fullStr |
On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
title_full_unstemmed |
On the use of static GPS measurements to record the tidal response of a small antarctic ice shelf (hells Gate ice shelf-Victoria Land) |
title_sort |
on the use of static gps measurements to record the tidal response of a small antarctic ice shelf (hells gate ice shelf-victoria land) |
publishDate |
1994 |
url |
http://hdl.handle.net/11380/741070 |
genre |
Antarc* Antarctic Ice Shelf Victoria Land |
genre_facet |
Antarc* Antarctic Ice Shelf Victoria Land |
op_relation |
volume:17 firstpage:123 lastpage:129 journal:GEOGRAFIA FISICA E DINAMICA QUATERNARIA http://hdl.handle.net/11380/741070 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0028681543 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1796947990307405824 |