DGS AT1M-3海洋重力仪的应用及精度评估  

Application and Accuracy Evaluation of DGS AT1M-3 Marine Gravimeter

作　　者：张登 袁园[1,3] 陶春辉 张涛 金颖 ZHANG Deng;YUAN Yuan;TAO Chunhui;ZHANG Tao;JIN Ying(Second Institute of Oceanography,MNR,Hangzhou 310012,China;State Key Laboratory of Satellite Ocean Environment Dynamics,Hangzhou 310012,China;Key Laboratory of Submarine Geosciences,MNR,Hangzhou 310012,China)

机构地区：[1]自然资源部第二海洋研究所,浙江杭州310012 [2]卫星海洋环境动力学国家重点实验室,浙江杭州310012 [3]自然资源部海底科学重点实验室,浙江杭州310012

出　　处：《海洋测绘》2020年第3期68-72,共5页Hydrographic Surveying and Charting

基　　金：自然资源部海洋调查评价与检测预警项目(2200209);国家重点研发计划课题(2018YFC0309901,2016YFC1401210)。

摘　　要：为了评估DGS AT1M-3海洋重力仪的精度,首先通过分割的有效重力测线进行重力异常质量的内符合精度评价,得出该海洋重力仪测量精度符合海洋调查规范要求。然后与Sandwell v23测高卫星重力异常进行比对分析,对重力异常质量进行外符合精度评价,可看出DGS测量异常与Sandwell卫星测高异常在整体变化趋势上基本一致。最后以西南印度洋断桥热液区为例,简要阐述DGS所测重力数据的有效性。通过评估,可知该海洋重力仪在动态环境下的工作性能较好,测量精度较高,为今后的海洋矿产资源勘探提供新的测量工具。In order to evaluate the accuracy of the DGS AT1 M-3 marine gravimeter,this paper first evaluates the internal coincidence accuracy of the anomalous mass of gravity through a segmented effective gravity line,and concludes that the measurement accuracy of the marine gravimeter meets the requirements of marine survey specifications.Then,compared with Sandwell v23 altimetry satellite gravity anomaly,and compared the accuracy of gravity anomaly quality,it can be seen that the DGS measurement anomaly is basically consistent with Sandwell satellite altimetry in the overall change trend.Finally,the validity of the gravity data measured by DGS is briefly explained by taking the hydrothermal region of the Southwest Indian Ocean broken bridge as an example.Through the evaluation,it can be known that the marine gravimeter works better in dynamic environment and has higher measurement accuracy,and provides a new measurement tool for future exploration of marine mineral resources.

关 键 词：DGS AT1M-3海洋重力仪 空间重力异常 西南印度洋 断桥热液区 “向阳红10”科考船 

分 类 号：P244.1[天文地球—测绘科学与技术]