碩士 / 國立交通大學 / 土木工程學系 / 85 / More and more satellite altimeter missions provides data sets for the mapping
of the marine geoid. With the largement of data, an efficient method for compu
ting the geoid is needed. In this study, we apply one dimension(1D) and two di
mension(2D) FFT methods to implement stokes'' formula and the deflection-geoid
formula. The result shows, using the deflection-geoid formula implemented by 1
D FFT method to compute global marine geoid yields more accurate result than t
he 2D FFT and there are no discontinuities in border connection. Additionally,
the reduction in computer memory is remarkable, and this method was adopted i
n this s tudy.The global marine geoid plays a great role in extracting the sea
surface topography. Circulations of the Kuroshio, the Gulf Stream and the Ben
guela Current have been determined from the three-year TOPEX/POSEIDON altimete
r data and the global marine geoid. The paths of the Kuroshio have been obtain
ed from the 3-year T/P data and are consistent with the GEK results.
| Identifer | oai:union.ndltd.org:TW/085NCTU0015025 |
| Date | January 1997 |
| Creators | Hsu, Hsinying, 徐欣瑩 |
| 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 | 79 |
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