地下流体中强震源兆场兆及强震(群)远场兆特征的研究——以新疆乌鲁木齐10号泉为例  

Study on Characteristics of Source Precursor and Field Precursor of Moderately Strong Earthquake and Far-field Precursor of Strong Earthquake Swarm in Underground Fluid --Taking Number 10 Spring of ürümqi, Xinjiang for Example

作　　者：高小其[1] 许秋龙[1] 王道[1] 李艳萍[1] 李新勇[1] 崔勇[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《山西地震》2002年第2期14-19,共6页Earthquake Research in Shanxi

摘　　要：分析了新疆乌鲁木齐 10号泉中强震源兆、场兆及强震 (群 )远场兆的特征 ,认为中强震源兆的表现是震前 1a～ 2 a,绝大多数主测项出现同步高值异常 ,临震前有转折或反向 ,震后异常由强到弱 ,直至消失 ;中强震场兆的表现是仅有少数测项出现场兆异常变化 ,异常以脉冲式短临突跳为主。强震 (群 )场兆的表现是少数映震效能较好的测项出现趋势性前兆异常。The characteristics of the source precursor and field precursor of the moderately strong earthquake and the far field precursor of the strong earthquake swarm in Number 10 spring of Xinjiang were analyzed,and deemed that the source precursor of the moderately strong earthquake appears as the synchronous anomaly with high value of a majority of the main observation terms during 1 a～2 a before the earthquake,turns or reverses before the impending earthquake,and the anomaly changes from strong to weak until elapse,the field precursor of the moderately strong earthquake appears as the anomaly change of a few observation terms,the burst jump with pulse is dominative in the anomalies,the field precursor of the strong earthquake swarm appears as the trend anomaly of a few observation terms with better reflecting earthquake ability.

关 键 词：地震前兆 地球化学异常 中强地震 电导率 氦气 硫化物 地下流体 

分 类 号：P315.724[天文地球—地震学]