基于不同走时表的秘鲁—巴西边境地区深震震相分析  

SEISMIC PHASE ANALYSIS OF DEEP EARTHQUAKE IN PERU-BRAZIL BORDER REGION BASED ON DIFFERENT TRAVEL-TIME TABLES

作　　者：张录 陈鲁刚[1] ZHANG Lu,CHEN Lu-gang(Kashi Seismic Station of Earthquake Agency of Xinjiang Uygur Autonomous Region, Kashi 844000, Xinjiang, China)

机构地区：[1]新疆维吾尔自治区地震局喀什基准地震台,新疆喀什844000

出　　处：《内陆地震》2018年第2期141-146,共6页Inland Earthquake

摘　　要：以巴楚地震台记录到的秘鲁—巴西边境地区深震为研究对象,通过参考J-B、IASP91和AK1353种走时表,进行了震相理论到时与实际到时的对比分析,为台站分析该地区深震工作提供参考。结果表明:(1)秘鲁—巴西边境地区深震震相丰富,除SKS(SKSdf)、SKKS(SKKSac)、SS震相特征不明显外,其余震相均易识别。(2)相较J-B走时表,IASP91和AK135走时表能提供更多震相及较为准确的理论到时。(3)秘鲁—巴西边境地区深震初至到时与走时表给出的理论到时残差大。Based on the study of the deep earthquakes in Peru-Brazil border region recorded by Bachu station. By reference to J-B,IASP91 and AK135 travel-time tables,contrast analysis the actual time and the theoretical time of each phase,which provides reference for us to analysis of deep earthquakes in this region. The results show that：（ 1） The deep earthquake in the Peru-Brazil border region have rich phase,and easy to recognize,except SKS（ SKSdf）,SKKS（ SKKSac） and SS phase are not obvious.（ 2） Compared with the J-B travel-time table,the IASP91 and AK135 provide more phase and more accurate theoretical time.（ 3） In Peru-Brazil border region,the residual of the deep earthquakes first arrival-time between the phase actual time and the theoretical time from each traveltime tables is large.

关 键 词：走时表 深震 极远震 震相 

分 类 号：P315.63[天文地球—地震学]