文章基本信息

标题：Prediction of gravity anomalies over the South China and Philippine Seas from multi-satellite altimeter sea surface heights
本地全文：下载
作者：Isaac Dadzie ; Jiancheng Li ; Yonghai Chu 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2008
卷号：11
期号：3
页码：174-179
DOI：10.1007/s11806-008-0086-8
出版社：Taylor and Francis Ltd
摘要：Gravity anomalies on a 2.5 × 2.5 arc-minute grid in a non-tidal system were derived over the South China and Philippine Seas from multi-satellite altimetry data. North and east components of deflections of the vertical were computed from altimeter-derived sea surface heights at crossover locations, and gridded onto a 2.5 × 2.5 arc-minute resolution grid. EGM96-derived components of deflections of the vertical and gravity anomalies gridded into 2.5 × 2.5 arc-minute resolutions were then used as reference global geopotential model quantities in a remove-restore procedure to implement the Inverse Vening Meinesz formula via the 1D-FFT technique to predict the gravity anomalies over the South China and Philippine Seas from the gridded altimeter-derived components of deflections of the vertical. Statistical comparisons between the altimeter-derived and the shipboard gravity anomalies showed that there is a root-mean-square agreement of 5.7 mgals between them.
关键词：satellite altimetry; sea surface heights; deflections of the vertical; gravity anomalies