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Study of the Gravity Changes before and after the Jingtai M_S5.9 Earthquake

Study of the Gravity Changes before and after the Jingtai M_S5.9 Earthquake
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摘要 By systematically analyzing the data of gravity reiteration in the Hexi region and taking a dynamic viewpoint, we have studied the evolution characters of gravity field during the preparation-occurrence of the Jingtai M S5.9 earthquake of June 6, 2000. The patterns of dynamic change of the gravity field clearly reflected how the gravity field evolved from the quasi-homogeneous state to non-homogeneous state for earthquake preparation and then the earthquake occurred. Besides, we have also studied the relation between the characteristic gravity change and strong earthquake activity. By systematically analyzing the data of gravity reiteration in the Hexi region and taking a dynamic viewpoint, we have studied the evolution characters of gravity field during the preparation-occurrence of the Jingtai M S5.9 earthquake of June 6, 2000. The patterns of dynamic change of the gravity field clearly reflected how the gravity field evolved from the quasi-homogeneous state to non-homogeneous state for earthquake preparation and then the earthquake occurred. Besides, we have also studied the relation between the characteristic gravity change and strong earthquake activity.
出处 《Earthquake Research in China》 2002年第2期127-137,共11页 中国地震研究(英文版)
基金 theJointSeismologicalScienceFounda tion (10 1118)and"Three in OneCombination"specialfundofChinaSeismologicalBureau
关键词 Gravity field evolution Jingtai earthquake Earthquake prediction Characteristic gravity change 重力异常 地震前兆 地震预报 河西走廊 地震活动性
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