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《Progress in Geophysics》 2008-06
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The OLR anomaly and mechanism Before Tibet earthquake(M6.9)

KANG Chun-li1,HAN Yan-ben2,LIU De-fu3,CAO Zhong-quan4(1.Center for Earthquake Network of China,Beijing 100045,China;2.Nation Astronomical Observatory,Chinese Academy of Sciences,Beijing 100012,China;3.Earthquake prediction institute,CEA,Beijing 100036,China;4.Seismological Bureau of Tibet Autonomous Region,Lhasa 850000,China)  
To the Tibet Ali district M6.9 earthquake occurred on 9/ 01/ 2008,the monthly and daily changing characteristics of satellite remote sensing Outgoing Long-wave Radiation(OLR) messages at west part of China are analyzed in this paper. After researching the relative phenomena in step between the OLR increase and the atmosphere pressure change,it is suggested that the OLR anomaly increasing origination may be in the atmosphere not the ground heat,and the pressure increasing before earthquake may be to induce the M6.9 earthquake occurrence.Certainly,the OLR message is also a important physical element as a indicator of atmosphere trigger earthquake.
【Fund】: 国家科技支撑项目(2008BAC35B03);; 中俄国际科技合作项目(2007DFR20030);; 地震科学联合基金项目(106039)联合资助
【CateGory Index】: P315.72
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