iGrav-007超导重力仪的性能分析及对球型自由振荡模态0Sm的检测

贾剑钢; 栾威; 申文斌

doi:10.13203/j.whugis20140145

iGrav-007超导重力仪的性能分析及对球型自由振荡模态₀S_m的检测

武汉大学测绘学院, 湖北武汉, 430079

基金项目: 国家973计划资助项目(2013CB733305);国家自然科学基金资助项目(41128003,41174011,41210006,40974015);武汉大学实验技术资助项目(WHU-2015-SYJS-08)。

详细信息

作者简介:
贾剑钢,博士生。主要从事地球重力场确定的理论和方法研究。E-mail:jgjia@sgg.whu.edu.cn

中图分类号: P223
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出版历程
- 收稿日期: 2014-02-06
- 发布日期: 2015-12-04

iGrav-007 SG and Detection of the Spherical Free Oscillation Modes ₀S_m

School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

Funds: The Major State Basic Research Development Program of China (973 Program), No.2013CB733305;the National Natural Science Foundation of China, Nos. 41128003,41174011,41210006,40974015;the Experiment Technology Project of Wuhan University, No.WHU-2015-SYJS-08.

摘要

摘要: iGrav超导重力仪是世界上最新型的便携式高精度重力仪,可提供目前为止最稳定的相对重力测量。基于Tsoft软件处理iGrav-007在武汉九峰台站连续5个月的观测数据,进行气压负荷、极移重力效应改正,分析重力残差和漂移等特性。通过频谱分析,检测观测期间2013年Mw6.6级芦山地震激发的球型自由振荡模态₀S_m,检测结果明显,综合表明iGrav-007观测性能良好。
- iGrav-007 /
- 大气重力导纳值 /
- 重力残差 /
- 自由振荡模态₀S_m
Abstract: iGrav Superconducting Gravimeter is the newest portable gravimeter with high accuracy in the world, which provides the most stable relative gravity measurement. Based on Tsoft software, this paper processed the consecutive iGrav-007 observation data of 5 months at Wuhan Jiufeng Station. Correction of station air pression and variations of polar motion on the gravity field and analysis of the nature of gravity residual error and drifting was made. Through the spectrum analysis, detaction of the spherical free oscillation modes ₀S_m caused by the 2013 Lushan Earthquake(Mw=6.6) was made. The result of detaction is evident. It comprehensively shows that iGrav-007 having a good performance on observation.
- iGrav-007 /
- atmospheric gravity admittance /
- gravity residual /
- free oscillation modes ₀S_m

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