碩士 / 國立交通大學 / 土木工程研究所 / 82 / A detailed marine gravity field over the Western Pacific Ocean
were derived from Seasat, Geosat, ERS-1 and TOPEX/POSIDON
altimeter and shipborne gravity data using least-squares
collocation (LSC). The ship gravity were first adjusted by a
satellite data to yield a combined gravity field. The OSU91A
geopotential model was used in the remove/restore technique
employed in the collocation computation. To validate the LSC,
we calculated a satellite-only gravity over a region east of
Taiwan and compared the result with ship gravity. The
computation of gravity was then carried out over the China Sea
with specially tuned procedure to eliminate spurious ship
gravity. We also compared the LSC gravity with Sandwell's FFT-
derived gravity and conclude that the former is better than the
latter in terms of agreement with the ship gravity. The derived
gravity over the Western Pacific Ocean shows high correlation
with the existing bathymetry and reveals detailed tectonic
structures.
| Identifer | oai:union.ndltd.org:TW/082NCTU0015056 |
| Date | January 1994 |
| Creators | Cheng-Yi Yao, 姚誠毅 |
| Contributors | Cheinway Hwang, 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 | 72 |
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