海洋测绘2017，Vol.37Issue(4)：28-32,42,6.DOI:10.3969/j.issn.1671-3044.2017.04.006
海洋大地水准面的多尺度分析
Multi-scale Analysis of Marine Geoid
摘要
Abstract
Using radial basis function multi-scale analysis method,the global marine geoid is decomposed into three scales successfully.The accuracy of reconstructed signal reaches about ± 0.02m,which indicates a good ability of radial basis functions in multi-scale modeling of the gravity field.The distribution and cause of geoid anomalies in different layer of upper mantle are discussed.The geoid anomalies produced by the shallower layer mainly locate on the plate boundary,which are very similar to the distribution of volcanic hot spots.The geoid anomalies generated by deeper layer,however,coincide with the mid-ocean ridge,showing a striking correlation with the mantle plume convection.Due to the combined effect of volcanic hot spot source and mantle convection,the distribution of the geoid anomalies caused by the middle layer of upper mantle is relatively scattered.关键词
大地水准面/多尺度分析/径向基函数/上地幔/火山热点/大洋中脊Key words
marine geoid/multi-scale analysis/radial basis function/upper mantle/hot spots/mid-ocean ridge分类
天文与地球科学引用本文复制引用
马志伟,陆洋,郗慧,李言..海洋大地水准面的多尺度分析[J].海洋测绘,2017,37(4):28-32,42,6.基金项目
国家973计划(2013CB733301) （2013CB733301）
国家自然科学基金(41274025,41674085). （41274025,41674085）
