小波分析在青藏高原东北缘地区地震前兆观测资料处理中的应用  

APPLICATION OF WAVELET ANALYSIS IN DIGITAL DATA OF PRECURSORS IN THE REGION OF NORTH-EASTERN QINGHAI-XIZANG PLATEAU

作　　者：胡永钧 屠泓为[2] 吴进 

机构地区：[1]甘肃省地震局,甘肃兰州730000 [2]青海省地震局,青海西宁810001 [3]江苏省扬州市地震局,江苏扬州225002

出　　处：《高原地震》2008年第1期14-21,共8页Plateau Earthquake Research

基　　金：地震科学联合基金青年基金课题(C08072);青海地震科学基金(2007A01)资助

摘　　要：分析地震前兆观测资料是地震预测研究的核心,通过对大量的前兆资料的研究,发现利用小波多分辨分析对于前兆资料有着很强的处理功能。利用该方法对1980年以来的青藏高原东北部地区地震前兆观测资料进行处理和分析,初步得出了地球物理场(形变、流体、地温场等)的阶段性转折变化一般发生在数年强震活动组前的结论。Analysis on the phenomena of the digital earthquake precursory data is the core of earthquake prediction, the digital earthquake predication data show that wavelet multiresolution analysis has very strong capabilities on it. The data of wavelet multiresolution since 1980 in Qinghai - Xizang plateau are analyzed. It is concluded that the varieties of geophysical observation （such as deformation, underground fluid, the field of ground temperature,etc. ） often appear before the cluster of strong earthquakes.

关 键 词：小波分析 前兆异常 青藏高原 地球物理场 

分 类 号：P315.31[天文地球—地震学]