Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica
The geomagnetic field pattern in the vicinity of Georg Forster station, Antarctica, is discussed. Induced magnetization is assumed to model the regional minimum in the total field intensity (MAGSAT) located here, and an associated anomalous body at a depth of 50 km is calculated and interpreted. Thi...
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Language: | English |
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Cambridge University Press (CUP)
1991
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Online Access: | http://dx.doi.org/10.1017/s0954102091000378 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000378 |
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crcambridgeupr:10.1017/s0954102091000378 2024-03-03T08:37:00+00:00 Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica Wagner, Steffen Lindner, H. 1991 http://dx.doi.org/10.1017/s0954102091000378 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000378 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 3, issue 3, page 317-321 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1991 crcambridgeupr https://doi.org/10.1017/s0954102091000378 2024-02-08T08:22:37Z The geomagnetic field pattern in the vicinity of Georg Forster station, Antarctica, is discussed. Induced magnetization is assumed to model the regional minimum in the total field intensity (MAGSAT) located here, and an associated anomalous body at a depth of 50 km is calculated and interpreted. This model is, however, discounted in favour of a cross section derived from a meridional ground magnetic profile recorded over a distance of about 200 km. The most striking features of the profile are positive anomalies over the ice shelf which are explained by dykes of basic rocks emanating from the lower crust and from the mantle. The derived crustal structure reflects a transition from continental crust to transitional type crust. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica Ice Shelf Cambridge University Press East Antarctica Dronning Maud Land Antarctic Science 3 3 317 321 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Wagner, Steffen Lindner, H. Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
The geomagnetic field pattern in the vicinity of Georg Forster station, Antarctica, is discussed. Induced magnetization is assumed to model the regional minimum in the total field intensity (MAGSAT) located here, and an associated anomalous body at a depth of 50 km is calculated and interpreted. This model is, however, discounted in favour of a cross section derived from a meridional ground magnetic profile recorded over a distance of about 200 km. The most striking features of the profile are positive anomalies over the ice shelf which are explained by dykes of basic rocks emanating from the lower crust and from the mantle. The derived crustal structure reflects a transition from continental crust to transitional type crust. |
format |
Article in Journal/Newspaper |
author |
Wagner, Steffen Lindner, H. |
author_facet |
Wagner, Steffen Lindner, H. |
author_sort |
Wagner, Steffen |
title |
Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
title_short |
Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
title_full |
Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
title_fullStr |
Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
title_full_unstemmed |
Interpretation of geomagnetic anomalies in Dronning Maud Land, East Antarctica |
title_sort |
interpretation of geomagnetic anomalies in dronning maud land, east antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1991 |
url |
http://dx.doi.org/10.1017/s0954102091000378 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000378 |
geographic |
East Antarctica Dronning Maud Land |
geographic_facet |
East Antarctica Dronning Maud Land |
genre |
Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica Ice Shelf |
genre_facet |
Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica Ice Shelf |
op_source |
Antarctic Science volume 3, issue 3, page 317-321 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102091000378 |
container_title |
Antarctic Science |
container_volume |
3 |
container_issue |
3 |
container_start_page |
317 |
op_container_end_page |
321 |
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1792496764378415104 |