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Recent gravity changes in China Mainland

Li Hui, Shen Chongyang, Sun Shaoan, Wang Xiaoquan, Xiang Aimin, Liu Shaoming
2011 Geodesy and Geodynamics  
This effect was illustrated by the positive-gravity changes in 2005 and their gradual strengthening in the cumulative gravity changes.  ...  Recent gravity changes in China Mainland  ...  Also, in 2005 and 2007 large scaled positive gravity changes appeared and continuously strengthened in the deep earthquake zone of northeastem part of North China and the coastal regions of Southeast China  ... 
doi:10.3724/sp.j.1246.2011.00001 fatcat:y5kectvgijfyphyziwjsswef4m

Medium-Term Earthquake Forecast Using Gravity Monitoring Data: Evidence from the Yutian and Wenchuan Earthquakes in China

Yiqing Zhu, F. Benjamin Zhan
2012 International Journal of Geophysics  
Gravity changes derived from regional gravity monitoring data in China from 1998 to 2005 exhibited noticeable variations before the occurrence of two large earthquakes in 2008 in China—the 2008 Yutian  ...  for the Yutian (Xinjiang) and Wenchuan (Sichuan) areas to experience a large earthquake in either 2007 or 2008 was high.  ...  Gravity Changes before the Wenchuan Earthquake Characteristics of gravity changes from 1998 to 2005 before the Wenchuan earthquake are shown in Figure 3 .  ... 
doi:10.1155/2012/307517 fatcat:v4d4iemsqreqxlarebawttxkqq

Progress and development on multi-parameters remote sensing application in earthquake monitoring in China

Xuhui Shen, Xuemin Zhang, Shunying Hong, Feng Jing, Shufan Zhao
2013 Earthquake Science  
The development in monitoring technology and data processing technique largely enriches earthquake research information and provides new tools for earthquake stereoscope monitoring system, especially on  ...  In this paper, the progress and development on remote sensing technology applied in earthquake monitoring research are summarized, such as differential interference synthetic aperture radar (D-InSAR),  ...  , China Earthquake Network Center, Lanzhou Institute of Seismology, and all the colleagues of Lab. of Earthquake Observation from Space in Institute of Earthquake Science, CEA.  ... 
doi:10.1007/s11589-013-0053-9 fatcat:whnfdy3zwnhmhj7bff5ojhevzm

High resolution Rayleigh wave group velocity tomography in North China from ambient seismic noise

Lihua Fang, Jianping Wu, Zhifeng Ding, G. F. Panza
2010 Geophysical Journal International  
The maps at short periods reveal an evident lateral heterogeneity in the curst of North-China, quite well in agreement with known geological and tectonic features.  ...  The group velocity contours at 4.5s, 12s and 20s are consistent with the Bouguer gravity anomalies measured in the area of the Taihangshan fault, that cuts through the lower crust at least.  ...  , voluminous magmatism and large-scale basin formation (Griffin et al., 1998; Menzies & Xu, 1998; Fan et al., 2000; Xu, 2001) .  ... 
doi:10.1111/j.1365-246x.2010.04571.x fatcat:r4lvqy7e4jbqxkf4isgziqcvym

Satellite signal shows storage-unloading subsidence in North China

J. P. Moiwo, F. Tao
2015 Hydrology and Earth System Sciences Discussions  
In the first step, GRACE (Gravity Recovery and Climate Experiment) mass rates are used to show WSD in the region.  ...  There is need for efficient water use strategies in North China, a pivotal agrarian, industrial and political base in China with a widespread WSD.  ...  Excessive groundwater exploitation over the long period could cause land subsidence (Galloway et al., 1998; Xue et al., 2005; Gambolati et al., 2006) or even earthquake (Bawden et al., 2001; Gonzáles  ... 
doi:10.5194/hessd-12-6043-2015 fatcat:rqbmpqirevevzh6pukg2r47xda

Seismic Vulnerability Analysis of RC Buildings in Western China [chapter]

Zhu Jian
2012 Earthquake-Resistant Structures - Design, Assessment and Rehabilitation  
The recorded maximum peak ground acceleration was 2933 gal and large long-period wave components were recorded in Tokyo during the 2011 off the Pacific coast of Tohoku Earthquake.  ...  With Indian plate moving to north continuously and squeezing Asian plate, in the near future there is still high risk of major earthquake happen again in western China region, so how to evaluate reliability  ...  out on large-scale models (Casarotti et al.,2005) .  ... 
doi:10.5772/27446 fatcat:4pf55e5dnfahxaighhgpzvowyq

The earthquake-related disturbances in ionosphere and project of the first China seismo-electromagnetic satellite

Xuhui Shen, Xuemin Zhang, Lanwei Wang, Huaran Chen, Yun Wu, Shigeng Yuan, Junfeng Shen, Shufan Zhao, Jiadong Qian, Jianhai Ding
2011 Earthquake Science  
Electro-out by the working group of earthquake-related satellite mission in China, and was kindly supported by French CNES, DEMETER mission center, and Russian scientists from IZMIRAN and IPE.  ...  When an earthquake occurs, different phenomena are observed underground, on the surface, and in the space at the same time.  ...  Our group analyzed the low-frequency electromagnetic disturbance for some large earthquakes using DEMETER data, for example, Sumatra event in 2005 (Zhang et al., 2010b) , Wenchuan event in 2008 (Zhang  ... 
doi:10.1007/s11589-011-0824-0 fatcat:wux2ezjn4nh45kcrbb5ts6emu4

Permeability enhancement in the aquifer of Fuxin well in geothermal area of northeastern China induced by low-frequency teleseismic waves of the 2011 Mw 9.0 Tohoku earthquake

Yan Zhang
2015 Acta geodynamica et geomaterialia  
The M w 9.0 Tohoku large earthquake induces far field (epicentral distance >1800 km) prominent coseismic water-level increase in the Fuxin well at northeastern China, which also influences volumetric strains  ...  The induced interstitial fluid flow in the region accounts for the sustained large-amplitude coseismic water-level increase.  ...  the large-amplitude coseismic changes.  ... 
doi:10.13168/agg.2015.0007 fatcat:6bz4clevazd4neb6o66wfqlj2u

Scoring annual earthquake predictions in China

Jiancang Zhuang, Changsheng Jiang
2012 Tectonophysics  
The Annual Consultation Meeting on Earthquake Tendency in China is held by the China Earthquake Administration (CEA) in order to provide oneyear earthquake predictions over most China.  ...  In the present study, the gambling score is used to evaluate the performance of these earthquake predictions.  ...  In particular, a map of several alarmed regions is marked as having high probabilities of large earthquakes (usually M 5.5 in the western part and M 5.0 in the eastern part of China).  ... 
doi:10.1016/j.tecto.2011.12.033 fatcat:oqhcujhbpvfbhcitsrp6c3syky

Swave tomography of the crust and uppermost mantle in China

Youshun Sun, M. Nafi Toksöz, Shunping Pei, Dapeng Zhao, F. Dale Morgan, Anca Rosca
2008 Journal of Geophysical Research  
Our results show that large velocity variations of more than 6% exist in the crust and upper mantle in the China region.  ...  Crustal heterogeneity is clearly observed, and velocity changes are visible across some of the large fault zones.  ...  P and S wave tomography have been performed in several local regions in China [Xu et al., 2002; Yu et al., 2003; Jia et al., 2005; Liu et al., 2005; Chang et al., 2007] .  ... 
doi:10.1029/2008jb005836 fatcat:3hsal4gchrholgnzoirfr6hoia

Imaging the mantle transition zone beneath eastern and central China with CEArray receiver functions

Xinling Wang, Fenglin Niu
2011 Earthquake Science  
We analyzed a total of 37 427 receiver-function data recorded by national and regional broadband seismic networks of the China Earthquake Administration to study the mantle transition zone beneath eastern  ...  and central China.  ...  Acknowledgements We would like to thank the Data Management Center of the China Earthquake Administration for providing the waveform data, and two anonymous reviewers for critical and constructive reviews  ... 
doi:10.1007/s11589-011-0770-x fatcat:7n5brlnc4vfopkkb5mivs6fljq

Earthquake prediction from China's mobile gravity data

Yiqing Zhu, Fang Liu, Xinzhao You, Weifeng Liang, Yunfeng Zhao, Lian Liu
2015 Geodesy and Geodynamics  
Three areas exhibit dramatic gravity changes in eastern China. First, in the southeast coast, large positive gravity changes and a high-gradient zone are recorded.  ...  Third, the recorded gravity variation is great after the Yushu earthquake, recovering after the previous period. Fig. 6 presents gravity changes from 1998 to 2005.  ...  Zhu Yiqing, born in 1962, is a researcher and director of gravity at the Second Crust Monitoring and Application Center, China Earthquake Administratration.  ... 
doi:10.1016/j.geog.2015.01.002 fatcat:w2npltdpz5aptl7hyrvhhknaqq

Gravity changes before and after the 2010 Ms7.1 Yushu earthquake

Zhu Yiqing, Liu fang, Cao Jianping, Zhao Yunfeng
2012 Geodesy and Geodynamics  
Absolute and relative gravity observations from 1998 -2010 from the China Crustal Movement Observation Network, a major national scientific project, have been used to model the gravity field and its variations  ...  The evolution of the regional gravity field and its relationship with seismicity before and after the Yushu earthquake are studied.  ...  a benchmark and calculated the changes in gravity from 1998 through 2000 ( Fig. 2 ( f) ) .  ... 
doi:10.3724/sp.j.1246.2012.00001.3 fatcat:x6fw7kogabbnjnmn6tgvrtxpr4

A rheological model of post-seismic deformation for the 2001 Kunlun, China earthquake, Mw 7.8

Chaojun Zhang, Yaolin Shi, Li Ma, Cinna Lomnitz
2007 Geofísica Internacional  
El sismo de Kunlun, China de 14 de noviembre de 2001 (Mw=7.8) fue el temblor más grande que ha ocurrido en China continental en cincuenta años.  ...  Acknowledgments Wang Rongjiang offered valuable ideas and advice in connection with using his PSGRN/PSCMP Code.  ...  We gratefully acknowledge grants 40574020 and 40234042 of the National Natural Science Foundation of China and grant 2004CB418405 of the National Basic Research Program of China (973).  ... 
doi:10.22201/igeof.00167169p.2007.46.3.35 fatcat:pbqxw7zalffftg465byzx6zdrq

Gravity variation associated with Wenchuan earthquake in western Sichuan

Zhu Yiqing, Liu Fang, Liang Weifeng, Xu Yunma
2011 Geodesy and Geodynamics  
Based on the data of mobile gravity observation from 1998 to 2008 in western Sichuan, spatial dynamic variation results of regional gravity field are obtained.  ...  . 2) The gravity field appeared a wider range regional gravity variation during W enchuan earthquake occurrence.  ...  This shows :in the process of large earthquake preparation, gravity field changing pattern is controlled by deep fault.  ... 
doi:10.3724/sp.j.1246.2011.00055 fatcat:ibs7o5pw6vd5rgpegmfae5ok7i
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