Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data
Marine gravity anomalies over the area 82 degrees S to 82 degrees N and 0 degrees E to 360 degrees E on a 2' x 2' grid have been derived from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data. The inverse Vening Meinesz formula with a 1-D FFT method was used to compute gravity anomal...
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ftnctuniv:oai:ir.nctu.edu.tw:11536/32484 2023-05-15T13:55:57+02:00 Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data Hwang, C Kao, EC Parsons, B 土木工程學系 Department of Civil Engineering 1998-08-01 http://hdl.handle.net/11536/32484 en_US eng 0956-540X http://hdl.handle.net/11536/32484 GEOPHYSICAL JOURNAL INTERNATIONAL gravity anomalies satellite geodesy Article 1998 ftnctuniv 2015-08-14T06:49:01Z Marine gravity anomalies over the area 82 degrees S to 82 degrees N and 0 degrees E to 360 degrees E on a 2' x 2' grid have been derived from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data. The inverse Vening Meinesz formula with a 1-D FFT method was used to compute gravity anomalies from gridded north-south and west-east geoid gradients, in a remove-restore procedure with the EGM96 gravity model as the reference field. This paper presents a new gridding technique and an altimeter data management system that help to extract date efficiently. In the 12 areas where ship-measured gravity and satellite-derived gravity were compared, rms agreements of 5-14 mgal were obtained. Special discussions of the gravity anomalies over selected inland seas, the Arctic, Antarctica and coastal waters are presented. The derived gravity anomalies show detailed tectonic structures of the world ocean. The global data set will be continuously updated with more altimeter data included in the derivation. Article in Journal/Newspaper Antarc* Antarctica Arctic National Chiao Tung University: NCTU Institutional Repository Arctic |
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Open Polar |
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National Chiao Tung University: NCTU Institutional Repository |
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ftnctuniv |
language |
English |
topic |
gravity anomalies satellite geodesy |
spellingShingle |
gravity anomalies satellite geodesy Hwang, C Kao, EC Parsons, B Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
topic_facet |
gravity anomalies satellite geodesy |
description |
Marine gravity anomalies over the area 82 degrees S to 82 degrees N and 0 degrees E to 360 degrees E on a 2' x 2' grid have been derived from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data. The inverse Vening Meinesz formula with a 1-D FFT method was used to compute gravity anomalies from gridded north-south and west-east geoid gradients, in a remove-restore procedure with the EGM96 gravity model as the reference field. This paper presents a new gridding technique and an altimeter data management system that help to extract date efficiently. In the 12 areas where ship-measured gravity and satellite-derived gravity were compared, rms agreements of 5-14 mgal were obtained. Special discussions of the gravity anomalies over selected inland seas, the Arctic, Antarctica and coastal waters are presented. The derived gravity anomalies show detailed tectonic structures of the world ocean. The global data set will be continuously updated with more altimeter data included in the derivation. |
author2 |
土木工程學系 Department of Civil Engineering |
format |
Article in Journal/Newspaper |
author |
Hwang, C Kao, EC Parsons, B |
author_facet |
Hwang, C Kao, EC Parsons, B |
author_sort |
Hwang, C |
title |
Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
title_short |
Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
title_full |
Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
title_fullStr |
Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
title_full_unstemmed |
Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data |
title_sort |
global derivation of marine gravity anomalies from seasat, geosat, ers-1 and topex/poseidon altimeter data |
publishDate |
1998 |
url |
http://hdl.handle.net/11536/32484 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarc* Antarctica Arctic |
genre_facet |
Antarc* Antarctica Arctic |
op_relation |
0956-540X http://hdl.handle.net/11536/32484 GEOPHYSICAL JOURNAL INTERNATIONAL |
_version_ |
1766262956982534144 |