Marine gravity of the Southern Ocean and Antarctic margin from Geosat
Geosat altimeter data, collected from an orbit with a ground rack that repeated every 17 days and overlayed one of the 17-day Seasat ground tracks, were used to map the gravity field of the Southern Ocean and the continental margin of Antarctica. The combination of ascending an descending profiles p...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19880067593 2023-05-15T13:41:01+02:00 Marine gravity of the Southern Ocean and Antarctic margin from Geosat Sandwell, David T. Mcadoo, David C. Unclassified, Unlimited, Publicly available Sep 10, 1988 http://ntrs.nasa.gov/search.jsp?R=19880067593 unknown http://ntrs.nasa.gov/search.jsp?R=19880067593 Accession ID: 88A54820 Copyright Other Sources 48 Journal of Geophysical Research; 93; 10389-10 1988 ftnasantrs 2012-02-15T17:41:34Z Geosat altimeter data, collected from an orbit with a ground rack that repeated every 17 days and overlayed one of the 17-day Seasat ground tracks, were used to map the gravity field of the Southern Ocean and the continental margin of Antarctica. The combination of ascending an descending profiles produced a typical Geosat ground track spacing of 70 km at the equator, with the best coverage occurring between the latitudes of 60 and 72 deg in both the Northern and Southern hemispheres. The new data reveal many previously uncharted seamounts and fracture zones in the extreme Southern Ocean areas adjacent to Antarctica, showing the detailed gravity signatures of the passive and active continental margins of Antarctica. Seven large age-offset fracture zones apparent in the Geosat data record the early breakup of Gondwana. Other/Unknown Material Antarc* Antarctic Antarctica Southern Ocean NASA Technical Reports Server (NTRS) Antarctic Southern Ocean |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
48 |
spellingShingle |
48 Sandwell, David T. Mcadoo, David C. Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
topic_facet |
48 |
description |
Geosat altimeter data, collected from an orbit with a ground rack that repeated every 17 days and overlayed one of the 17-day Seasat ground tracks, were used to map the gravity field of the Southern Ocean and the continental margin of Antarctica. The combination of ascending an descending profiles produced a typical Geosat ground track spacing of 70 km at the equator, with the best coverage occurring between the latitudes of 60 and 72 deg in both the Northern and Southern hemispheres. The new data reveal many previously uncharted seamounts and fracture zones in the extreme Southern Ocean areas adjacent to Antarctica, showing the detailed gravity signatures of the passive and active continental margins of Antarctica. Seven large age-offset fracture zones apparent in the Geosat data record the early breakup of Gondwana. |
format |
Other/Unknown Material |
author |
Sandwell, David T. Mcadoo, David C. |
author_facet |
Sandwell, David T. Mcadoo, David C. |
author_sort |
Sandwell, David T. |
title |
Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
title_short |
Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
title_full |
Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
title_fullStr |
Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
title_full_unstemmed |
Marine gravity of the Southern Ocean and Antarctic margin from Geosat |
title_sort |
marine gravity of the southern ocean and antarctic margin from geosat |
publishDate |
1988 |
url |
http://ntrs.nasa.gov/search.jsp?R=19880067593 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19880067593 Accession ID: 88A54820 |
op_rights |
Copyright |
_version_ |
1766144450794356736 |