碩士 / 國立交通大學 / 土木工程研究所 / 85 / Global marine gravity anomalie at a 2''×2'' grid have been determined from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data. The inverse Vening Meinesz formula with an 1D 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. The data cover the area 72°S to 72°N in latitude and 0° to 360° in iongitude.
In the 12 test areas where ship gravity and satellite-derived gravity were compared, rms agreenents of 6-10 mgals were obtained and the gravity anomalies derived in this work are 0.5 mgal on average better than those derived by Sandwell and Smith (1997). The gravity anomalies are located at an ftp site (ftp://gps. cv.nctu.edu.tw) where an application grogram is available for extracting data in a subarea.
| Identifer | oai:union.ndltd.org:TW/085NCTU3015002 |
| Date | January 1997 |
| Creators | Kao, Eu-Chi, 高豫麒 |
| Contributors | Hwang, Chein-Way, 黃金維 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 119 |
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