摘要
该文对2008年5月12日四川汶川8.0级地震前山西昔阳地震台体积应变仪出现的异常变化进行了初步分析,结果表明,从3月29日出现的异常变化完全符合在实验研究岩石破裂时,主破裂前和破裂时显示出的突变变化特征。
Anomalous variations recorded by body strain instruments of Xiyang Seismological Station before the May 12, 2008 Wenchuan earthquake are preliminarily analyzed in this paper. The result indicates that the anomalous variation, having appeared since Mar. 29, is well coincided with the characteristics showed in experiments of rock fracture study that sharp changing turns up before main fracture and at the time of fracture.
出处
《山西地震》
2009年第2期19-20,共2页
Earthquake Research in Shanxi
关键词
体应变
前兆特征
年变动态
Body stain
Precursor characteristics
Annual variation
