祁连山地震带地震活动特征研究

STUDY ON THE SEISMICITY FEATURES OF MT. QILIAN SEISMIC ZONE

摘要:

通过对M-t图、频度图、震中分布图的细致分析以及相关地震的统计分析指出祁连山地震带5级以上地震活动具有明显的周期性特征,由东向西迁移特征以及与唐古拉山西段及澜沧、孟连地区地震活动相关的特征.

Abstract:

Based on the detailed analysis of M-t diagram,frequency diagram and epicenter distribution diagram and the statistical analysis of correlative earthquakes,it is suggested that the M_S≥5 events in the Mt. Qilian seismic zone are characterized by evident periodicity,migration from east to west and correlativity with the seismicity in west segment of Mt. Tanggula and Lancang Menglian region.