Combined Adjustment and Systematic Error Correction of Multi-Network Repeated Gravity Observations

详细信息   

• 责任者：Li Zhen (Geophysical Exploration Center ; CEA ; Zhengzhou 450002 ; China) ; Chen Shi
• 刊名：Earthquake
• 出版年：2012
• 卷期：32(2)
• 关键词：地震活动性 ; seismicity ; 重力场 ; gravity field ; 华北地区 ; North China
• 页码：p.95-104
• 图表：5 illus., 3 tables, 16 refs.
• 分类号：0500
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

摘要

///In this paper, the authors use absolute gravity points and the Large North China Gravity Network as control gravity network, and calculate combined adjustment of the nine repeated relative gravity networks. The precision of the repeated relative gravity observation networks increased by 0 ~ 4 × 10^-8 m/s² and the nine repeated relative gravity observation networks can be united as a whole gravity network. Systematic error of some relative gravity observation networks can reach 60× 10^-8 m/s².  The authors also calculated reliability of correlation coefficients of relative gravity observation networks and made systematic error correction.