Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data
The isolation of the crustal magnetic anomaly field is discussed. Slowly spatially varying ring current fields were modeled as a least squares fit to each MAGSAT pass over Antarctica. Selection criteria were applied to data from 3000 MAGSAT passes to remove field aligned currents, yielding 87 data s...
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| Format: | Other/Unknown Material |
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1981
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| Online Access: | http://hdl.handle.net/2060/19820013800 |
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ftnasantrs:oai:casi.ntrs.nasa.gov:19820013800 |
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openpolar |
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ftnasantrs:oai:casi.ntrs.nasa.gov:19820013800 2023-05-15T14:04:06+02:00 Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data Bentley, C. R. Unclassified, Unlimited, Publicly available Nov 30, 1981 application/pdf http://hdl.handle.net/2060/19820013800 unknown Document ID: 19820013800 Accession ID: 82N21674 http://hdl.handle.net/2060/19820013800 No Copyright CASI EARTH RESOURCES AND REMOTE SENSING E82-10147 NASA-CR-168532 NAS 1.26:168532 QTPR-7 1981 ftnasantrs 2019-07-21T10:16:53Z The isolation of the crustal magnetic anomaly field is discussed. Slowly spatially varying ring current fields were modeled as a least squares fit to each MAGSAT pass over Antarctica. Selection criteria were applied to data from 3000 MAGSAT passes to remove field aligned currents, yielding 87 data sets used to construct a scalar magnetic anomaly map for regions south of 55 S latitude. Internal tests performed on MAGSAT data and comparisons with the POGO map indicated that the general anomaly features are of crustal origin. The sources of anomalies generated in continental and in oceanic regions are discussed. Correlations were found between crustal magnetic anomalies and known geologic features over West and East Antarctica and over the surrounding oceanic regions. Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica NASA Technical Reports Server (NTRS) Antarctic East Antarctica |
| institution |
Open Polar |
| collection |
NASA Technical Reports Server (NTRS) |
| op_collection_id |
ftnasantrs |
| language |
unknown |
| topic |
EARTH RESOURCES AND REMOTE SENSING |
| spellingShingle |
EARTH RESOURCES AND REMOTE SENSING Bentley, C. R. Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| topic_facet |
EARTH RESOURCES AND REMOTE SENSING |
| description |
The isolation of the crustal magnetic anomaly field is discussed. Slowly spatially varying ring current fields were modeled as a least squares fit to each MAGSAT pass over Antarctica. Selection criteria were applied to data from 3000 MAGSAT passes to remove field aligned currents, yielding 87 data sets used to construct a scalar magnetic anomaly map for regions south of 55 S latitude. Internal tests performed on MAGSAT data and comparisons with the POGO map indicated that the general anomaly features are of crustal origin. The sources of anomalies generated in continental and in oceanic regions are discussed. Correlations were found between crustal magnetic anomalies and known geologic features over West and East Antarctica and over the surrounding oceanic regions. |
| format |
Other/Unknown Material |
| author |
Bentley, C. R. |
| author_facet |
Bentley, C. R. |
| author_sort |
Bentley, C. R. |
| title |
Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| title_short |
Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| title_full |
Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| title_fullStr |
Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| title_full_unstemmed |
Investigation of antarctic crust and upper mantle using MAGSAT and other geophysical data |
| title_sort |
investigation of antarctic crust and upper mantle using magsat and other geophysical data |
| publishDate |
1981 |
| url |
http://hdl.handle.net/2060/19820013800 |
| op_coverage |
Unclassified, Unlimited, Publicly available |
| geographic |
Antarctic East Antarctica |
| geographic_facet |
Antarctic East Antarctica |
| genre |
Antarc* Antarctic Antarctica East Antarctica |
| genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
| op_source |
CASI |
| op_relation |
Document ID: 19820013800 Accession ID: 82N21674 http://hdl.handle.net/2060/19820013800 |
| op_rights |
No Copyright |
| _version_ |
1766275112569405440 |