海洋测绘2018，Vol.38Issue(2)：8-11,4.DOI:10.3969/j.issn.1671-3044.2018.02.003
基于重力地质法反演南海海底地形
Bathymetry Inversion Based on Gravity-geologic Method in South China Sea
彭聪 1王鹏 2周兴华 3杨磊2
作者信息
- 1. 山东科技大学 测绘科学与工程学院,山东青岛 266590
- 2. 国家海洋局 第一海洋研究所,山东青岛 266061
- 3. 邢台市勘察测绘院,河北邢台 054000
- 折叠
摘要
Abstract
Based on the gravity-geologic method (GGM),the bathymetry model is inversed for 1'× 1'bathymetry determination in 112°E～ 119 ° E,16° N ～ 20° N region in south sea.The gravity anomalies data is used in this method,and the accuracy of the predicted model is evaluated by the check of the directly grid results of the ship-derived data and ETOP01 model.Results show that the GGM model has a more precise results compared to the directly grid results of the ship-derived data,and the bathymetric model predicted by GGM is more accurate than ETOP01 model in areas with better distributed shipborne measurements.In order to further validate the relevance between the GGM model and the topographical characteristics,the depths of 9 356 check points' interpolation respectively from GGM model and the ETOP01 model are calculated.The difference between the two interpolation depths reaches mean value of 19.560m,standard deviations of 130.156m and relative precision of 4.79％. Analysis results show that the GGM model and the ETOP01 model have a good coherence in deep sea areas with a gently slope change.However,the difference between two models gradually increases in shallow sea areas,which reach the maximum in areas of seamounts.Finally,in order to make full use of the advantages of gravity geologic method in the inversion of bathymetry,the best application conditions are summarized.关键词
海底地形/重力地质法/重力异常/重力反演/南海Key words
bathymetry/gravity-geologic method/gravity anomalies/gravity inversion/south China sea分类
天文与地球科学引用本文复制引用
彭聪,王鹏,周兴华,杨磊..基于重力地质法反演南海海底地形[J].海洋测绘,2018,38(2):8-11,4.
