1997年伽师强震群活动的近场定点形变异常特征  

Characteristics of near field crustal deformation anomaly at fixed point of the Jiashi strong earthquake swarm in 1997

作　　者：温和平[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：《华南地震》2000年第2期40-46,共7页South China Journal of Seismology

摘　　要：对 1997年伽师强震群前后的近场定点形变资料和卡尔曼滤波结果的前兆异常进行了分析 ,结果表明 ,震前短临异常较为明显 ,通过密切跟踪 ,在后续强震的预报中发挥了重要作用。Precursor anomalies of near field crustal deformation data in fixed point and their Krlman filter residual before and after the Jiashi strong earthquake swarm occurred in 1997 are analyzed.It is concluded that short-impending anomalies play an important part in the prediction of following strong earthquake through close follow the tracks of anomalous variation.Finally,the relation between the anomaly and seismogenic structure and stress field is discussed.

关 键 词：地震前兆 形变 短临预报 伽师强震群活动 

分 类 号：P315.725[天文地球—地震学]