Bathymetry predicted from vertical gravity gradient anomalies and ship soundings  

作　　者：Hu Minzhang Li Jiancheng Li Hui Xin Lelin 

机构地区：[1]Key Laberatery of Earthquake Geadesy,Institute of Seismology,China Earthquake Administration [2]Wuhan Base of Institute of Geodynamics,China Earthquake Administration [3]School of Geodesy and Geomatics,Wuhan University

出　　处：《Geodesy and Geodynamics》2014年第1期41-46,共6页大地测量与地球动力学（英文版）

基　　金：supported by the Director Foundation of Institute of Seismology,China Earthquake Administration(IS201326125);the National Natural Science Foundation of China(41204019,41304003)

摘　　要：In this paper, the admittance function between seafloor undulations and vertical gravity gradient anomalies was derived. Based on this admittance function, the bathymetry model of 1 minute resolution was predicted from vertical gravity gradient anomalies and ship soundings in the experimental area from the northwest Pacific. The accuracy of the model is evaluated using ship soundings and existing models, including ETOPO1, GEBCO, DTU10 and V15.1 from SIO. The model＇s STD is 69. 481m, comparable with V15.1 which is generally believed to have the highest accuracy.In this paper, the admittance function between seafloor undulations and vertical gravity gradient anomalies was derived. Based on this admittance function, the bathymetry model of 1 minute resolution was predicted from vertical gravity gradient anomalies and ship soundings in the experimental area from the northwest Pacific. The accuracy of the model is evaluated using ship soundings and existing models, including ETOPO1, GEBCO, DTU10 and V15.1 from SIO. The model＇s STD is 69. 481m, comparable with V15.1 which is generally believed to have the highest accuracy.

关 键 词：BATHYMETRY vertical gravity gradient admittance function ship soundings ISOSTASY 

分 类 号：P714[天文地球—海洋科学]