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

JIA Jiangang; LUAN Wei; SHEN Wenbin

doi:10.13203/j.whugis20140145

Volume 40 Issue 12

Dec. 2015

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Geomatics and Information Science of Wuhan University > 2015 > 40(12): 1683-1689. > DOI: 10.13203/j.whugis20140145

JIA Jiangang, LUAN Wei, SHEN Wenbin. iGrav-007 SG and Detection of the Spherical Free Oscillation Modes ₀S_m[J]. Geomatics and Information Science of Wuhan University, 2015, 40(12): 1683-1689. DOI: 10.13203/j.whugis20140145

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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.

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Received Date: February 06, 2014
Published Date: December 04, 2015

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