Chinese coastal gravity anomalies from waveform retracked Geosat/GM altimetry

Yuande Yang; Dongchen E; Chein-way Hwang; Haihong Wang

Chinese coastal gravity anomalies from waveform retracked Geosat/GM altimetry

Yuande Yang^*, Dongchen E, Chein-way Hwang, Haihong Wang

^*Corresponding author for this work

Department of Civil Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Three retracking methods are compared in the area 117°E-129°E, 21°N-41°N of China Sea, and the improved threshold shows the best result, using Geosat/GM waveform data. Least square collocation (LSC) gives a better result than IVM when comparing with the shipborne gravity and gravity anomaly from the improved threshold altimeter data. In order to improve the accuracy of altimeter gravity anomaly, the Guass filter is used and the wavelength is 16 km. The gravity anomalies from the improved threshold are compared with that of KMS02 and V15, the former is best in the East sea and a little worse than the other two in Taiwan area.

Original language	English
Pages (from-to)	1288-1291
Number of pages	4
Journal	Wuhan Daxue Xuebao (Xinxi Kexue Ban)/ Geomatics and Information Science of Wuhan University
Volume	33
Issue number	12
State	Published - Dec 2008

Keywords

Geosat/GM
Gravity anomaly
IVM
LSC
Waveform retracking

Cite this

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AU - E, Dongchen

AU - Hwang, Chein-way

AU - Wang, Haihong

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N2 - Three retracking methods are compared in the area 117°E-129°E, 21°N-41°N of China Sea, and the improved threshold shows the best result, using Geosat/GM waveform data. Least square collocation (LSC) gives a better result than IVM when comparing with the shipborne gravity and gravity anomaly from the improved threshold altimeter data. In order to improve the accuracy of altimeter gravity anomaly, the Guass filter is used and the wavelength is 16 km. The gravity anomalies from the improved threshold are compared with that of KMS02 and V15, the former is best in the East sea and a little worse than the other two in Taiwan area.

AB - Three retracking methods are compared in the area 117°E-129°E, 21°N-41°N of China Sea, and the improved threshold shows the best result, using Geosat/GM waveform data. Least square collocation (LSC) gives a better result than IVM when comparing with the shipborne gravity and gravity anomaly from the improved threshold altimeter data. In order to improve the accuracy of altimeter gravity anomaly, the Guass filter is used and the wavelength is 16 km. The gravity anomalies from the improved threshold are compared with that of KMS02 and V15, the former is best in the East sea and a little worse than the other two in Taiwan area.

KW - Geosat/GM

KW - Gravity anomaly

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Chinese coastal gravity anomalies from waveform retracked Geosat/GM altimetry

Abstract

Keywords

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