A geoelectrical survey above an Antarctic ice shelf
A geoelectrical survey was performed on the Hells Gate ice shelf (Victoria Land-Antarctic) within the framework of an integrated geophysical and glaciological research program. The resistivity profiles show a similar trend, with resistivity values ranging from about 25000 W · m to 500000 W · m. Thes...
Published in: | Annals of Geophysics |
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Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia, INGV
1998
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Online Access: | https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340 https://doi.org/10.4401/ag-4340 |
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ftjaog:oai:ojs.annalsofgeophysics.eu:article/4340 2023-05-15T13:54:52+02:00 A geoelectrical survey above an Antarctic ice shelf Merlanti, F. Pavan, M. 1998-11-25 application/pdf https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340 https://doi.org/10.4401/ag-4340 eng eng Istituto Nazionale di Geofisica e Vulcanologia, INGV https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340/4410 https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340 doi:10.4401/ag-4340 Annals of Geophysics; V. 41 N. 3 (1998) Annals of Geophysics; Vol. 41 No. 3 (1998) 2037-416X 1593-5213 applied geophysics ice shelf electrical prospecting 02.04.04. Instruments and techniques 04.02.04. Magnetic and electrical methods info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1998 ftjaog https://doi.org/10.4401/ag-4340 2022-03-27T06:37:10Z A geoelectrical survey was performed on the Hells Gate ice shelf (Victoria Land-Antarctic) within the framework of an integrated geophysical and glaciological research program. The resistivity profiles show a similar trend, with resistivity values ranging from about 25000 W · m to 500000 W · m. These results have been interpreted as the effect of a sharp transition from "marine ice" to "continental" ice an interpretation that is consistent with the results of surface mapping. Interpreting the Vertical Electrical Soundings (VES) is a complex process. In fact, the alternating layers of ice with different compositions and salt content generate great uncertainty relative to the corresponding electric stratigraphies. To solve these problems of equivalency, all the available constraints were used including the drilling thickness, seismic reflection profiles as well as radar profiles. The results were used to provide what is mainly a qualitative overview that is coherent with the glaciological hypotheses relative to the evolution and structure proposed by some researchers for this ice shelf. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Victoria Land Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) Antarctic Victoria Land Hells Gate ENVELOPE(163.800,163.800,-74.850,-74.850) Annals of Geophysics 41 3 |
institution |
Open Polar |
collection |
Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftjaog |
language |
English |
topic |
applied geophysics ice shelf electrical prospecting 02.04.04. Instruments and techniques 04.02.04. Magnetic and electrical methods |
spellingShingle |
applied geophysics ice shelf electrical prospecting 02.04.04. Instruments and techniques 04.02.04. Magnetic and electrical methods Merlanti, F. Pavan, M. A geoelectrical survey above an Antarctic ice shelf |
topic_facet |
applied geophysics ice shelf electrical prospecting 02.04.04. Instruments and techniques 04.02.04. Magnetic and electrical methods |
description |
A geoelectrical survey was performed on the Hells Gate ice shelf (Victoria Land-Antarctic) within the framework of an integrated geophysical and glaciological research program. The resistivity profiles show a similar trend, with resistivity values ranging from about 25000 W · m to 500000 W · m. These results have been interpreted as the effect of a sharp transition from "marine ice" to "continental" ice an interpretation that is consistent with the results of surface mapping. Interpreting the Vertical Electrical Soundings (VES) is a complex process. In fact, the alternating layers of ice with different compositions and salt content generate great uncertainty relative to the corresponding electric stratigraphies. To solve these problems of equivalency, all the available constraints were used including the drilling thickness, seismic reflection profiles as well as radar profiles. The results were used to provide what is mainly a qualitative overview that is coherent with the glaciological hypotheses relative to the evolution and structure proposed by some researchers for this ice shelf. |
format |
Article in Journal/Newspaper |
author |
Merlanti, F. Pavan, M. |
author_facet |
Merlanti, F. Pavan, M. |
author_sort |
Merlanti, F. |
title |
A geoelectrical survey above an Antarctic ice shelf |
title_short |
A geoelectrical survey above an Antarctic ice shelf |
title_full |
A geoelectrical survey above an Antarctic ice shelf |
title_fullStr |
A geoelectrical survey above an Antarctic ice shelf |
title_full_unstemmed |
A geoelectrical survey above an Antarctic ice shelf |
title_sort |
geoelectrical survey above an antarctic ice shelf |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia, INGV |
publishDate |
1998 |
url |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340 https://doi.org/10.4401/ag-4340 |
long_lat |
ENVELOPE(163.800,163.800,-74.850,-74.850) |
geographic |
Antarctic Victoria Land Hells Gate |
geographic_facet |
Antarctic Victoria Land Hells Gate |
genre |
Antarc* Antarctic Ice Shelf Victoria Land |
genre_facet |
Antarc* Antarctic Ice Shelf Victoria Land |
op_source |
Annals of Geophysics; V. 41 N. 3 (1998) Annals of Geophysics; Vol. 41 No. 3 (1998) 2037-416X 1593-5213 |
op_relation |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340/4410 https://www.annalsofgeophysics.eu/index.php/annals/article/view/4340 doi:10.4401/ag-4340 |
op_doi |
https://doi.org/10.4401/ag-4340 |
container_title |
Annals of Geophysics |
container_volume |
41 |
container_issue |
3 |
_version_ |
1766261012462305280 |