CHARACTERISTICS OF SURFACE GRAVITY CHANGES CAUSED BY A FAULT OR FAULTS DISLOCATION
Tan Hongbo 1,2) ;Shen Chongyang 1,2) ; and Li Hui 1,2)
1)Institute of Seismology, CEA, Wuhan 4300712)Crustal Movement Laborator, Wuhan 430071
Abstract According to the theory of gravity changes caused by dislocation on a rectangular plane buried in a homogeneous elastic halfspace the characteristics of surface gravity changes caused by one fault or combination of two faults are studied. The main conclusion are: 1) For one fault, the effect of surface elevation change is larger than the effect of density change or horizontal displacement change. The depth of the fault, the dip angle, the magnitude of dislocation(U\-1、U\-2、U\-3) and the way of dislocation have also large effects on the surface gravity change; 2) For the combination of two faults, when they are in the same depth, the relative position of the faults have great effect on the surface gravity changes, when they are in different depth, the shallow fault plays a dominant role in the total surface gravity change, but the deep fault may also have great effect on it if the deep fault has different characters.
Key words ：
fault dislocation model
homogeneous media
infinite elastic halfspace
combination of fault
gravity change
Received: 01 January 1900
Corresponding Authors:
Tan Hongbo
Cite this article:
Tan Hongbo,Shen Chongyang,and Li Hui. CHARACTERISTICS OF SURFACE GRAVITY CHANGES CAUSED BY A FAULT OR FAULTS DISLOCATION[J]. , 2008, 28(4): 54-62.
Tan Hongbo,Shen Chongyang,and Li Hui. CHARACTERISTICS OF SURFACE GRAVITY CHANGES CAUSED BY A FAULT OR FAULTS DISLOCATION[J]. jgg, 2008, 28(4): 54-62.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2008/V28/I4/54
[1]
TAN Hongbo,SHEN Chongyang,HUANG Haozhe,HAO Hongtao,WEI Jin,YANG Guangliang,WANG Jiapei. Typical Gravity Changes before Strong Earthquakes and Numerical Prediction Test
[2]
FENG Jianlin,TAN Yujuan,XIE Ruyi,LIU Dongyang,HAO Pengfei. Variation Characteristics of Ground Gravity during the Yuanping Earthquake
[3]
LIU Shaoming, HAO Hongtao, HU Minzhang, SHEN Chongyang. The Gravity Changes before the M4.9 Earthquake in Yingcheng County
[4]
WANG Tongqing, ZHANG Lei, ZHU Chuandong, ZHANG Pin. Characteristics of Long-Term Gravity Variation at Jixian Datum Station
[5]
LI Shupeng,ZHANG Chunpeng,LI Guoyi,LU Hanpeng,WANG Fengji,WU Shuang. Influence of Groundwater Funnel on Relative Gravimetric Data in Changyi-Xinhe Area
[6]
FENG Jianlin,TAN Yujuan,SONG Jinyue,LIU Dongyang,XIE Ruyi,HAO Pengfei. Gravity Changes before the Fengnan M4.5 Earthquake in Tangshan, Hebei Province
[7]
LIN Chenghao，LI Zhejun，XU Rugang，YUAN Quan. Wavelet Multi-Scale Decomposition and Tectonic Activity Analysis of the Variation of Gravity Field in Jiangsu-Anhui Segment of Tan-Lu Fault Zone
[8]
ZHAO Yihang. Error Modification of Bostick Inversion Method
[9]
WANG Tongqing, ZHANG Pin,LIU Jinzhao,CHEN Zhaohui,ZHANG Shuangxi,ZHU Chuandong. A Study of Qianguo MS 5.8 Earthquake Swarm Based on the Variation of Gravity Point, Section Difference, and 3D Inversion
[10]
HU Minzhang,HAO Hongtao,SONG Hao,LIU Shaoming,WANG Jian,WEN Xiang. Analysis of Gravity Changes in Areas of Weak Seismic Activity Background
[11]
HUANG Haozhe,SHEN Chongyang,TAN Hongbo,WU Guiju. Quantitative Research on the Seismic Model of Typical Gravity Precursors in Yao’an MS 6.0 Earthquake
[12]
WANG Qinghua， HAO Hongtao，WANG Jian，LIU Shaoming，LI Zhongya，HU Minzhang. Construction and Analysis of Seismic Response Capability of Gravimetric Network in Yunnan
[13]
LIU Shaoming；HAO Hongtao；HU Minzhang. Gravity Changes before the M4.5 and M4.1 Earthquakes in Zigui County
[14]
WANG Jiapei,SHEN Chongyang,XUAN Songbai,YANG Guangliang,HAO Hongtao. Density Variation in the Crust before the Jiuzhaigou, Sichuan, MS 7.0 Earthquake of 2017
[15]
QU Wei,AN Dongdong,ZHANG Qin,WANG Qingliang,ZHANG Bing. Gravity Variations and Tectonic Activity of the MW 8.8 Chile Earthquake Observed by the GRACE
