Comparative Study of Changes in Stress-drop of the Jinggu MS6.6 and Ludian MS6.5 Earthquake Sequences-中国期刊网

摘要 Theearthquakestress-dropvaluesoftwosequenceswereaccuratelycalculatedaftertakingawaytheeffectsduetoregionalearthquakeanelasticattenuationandstationsiteresponse,usingwaveformdataandseismicphasedataofsequencesoftheJingguM_S6.6,andLudianM_S6.5earthquakesinYunnan.Theseresultsshowthatthestressdropwithmagnitudeincreaseswithinthescopeofthisstudyofmagnitude.Aftereliminatingtheinfluenceofthemagnitude,theaveragevalueofstress-dropintheJinggusequenceishigherthanthatoftheLudiansequenceatthesamemagnituderange.Thismayberelatedtothestressstateindifferentregions.Intermsofthechangesoftimeandspaceofstress-drop,beforeM_S5.8strongaftershock,thestress-dropis'slowingdown-turningup-keepingahighvalue'afterthemainshock,meanwhile,almostalloftheabnormallyhighstressdropvalueisdistributedaroundtheM_S5.8strongaftershock,showingthatthestressenvironmentintheregionwasincreasingafterthemainshock.AndaftertheM_S5.9strongaftershock,stress-droprapidlydeclinestoarelativelystablestate,meanwhile,thehighvalueofstress-dropisdistributedaroundthestrongaftershock,showingthattheregionaltectonicstressgetsmorefullyrelease,itsstressenvironmentbeginstorapidlydecrease.FortheLudiansequencewithoutastrongaftershockoccurring,theaveragevalueofstressdropislowerthanthatoftheJingguearthquakesequenceatthesamemagnituderange,whileatthesametime,thestress-dropoftheaftershocksequencealmosthasn'tchangedmuch.Inthetimeafterthemainshock,combinedwiththereleasecharacteristicsofthemainenergy,thestressintheregionisexcessivelyreleased,thesubsequentstressintheregiongraduallyreturnstonormal.ThismaybethereasonwhytheactivityofLudianaftershockssignificantlywasweakerandsubsequentlytherewerenostrongaftershocksoccurred.

1Yang Wen;Long Haiyun;Yao Qi. The Study on Seismicity and Relocation of the July 3,2015 Pishan MS6.5 Earthquake.地震学,2017-02.
2Zhang Yan;Kang Chunli;Ma Weiyu;Yao Qi. The Change in Outgoing Long-wave Radiation before the Ludian Ms6.5 Earthquake Based on Tidal Force Niche Cycles.地震学,2017-03.
3Dai Yong;Feng Zhisheng;Yang Yanming;Gegen. Spatial Correlation Anomalies of the Diurnal Variation of the Geomagnetic Vertical Component before the Yingjiang MS 6.1 and Ludian MS 6.5 Earthquakes.地震学,2018-04.
4冀昆;温瑞智;崔建文;王宏伟;任叶飞. 鲁甸Ms6.5级地震强震动记录及震害分析.地震学,2014-03.
5林国良;崔建文;杨黎薇;刘琼仙. 景谷Ms6．6、Ms5．8和Ms5．9地震强震动记录初步分析与场地效应研究.地震学,2016-02.
6程万正;陈天长;魏娅玲;朱航. Changes in source parameters of foreshocks and aftershocks of the 2001 Ms=6.0 Yajiang,Sichuan, earthquake.地震学,2003-04.
7Song Jin;Zhou Longquan. The Static Stress Triggering Effects Related to the Yutian MS7. 3 Earthquake.地震学,2014-04.
8Zou Rui;Guo Xiao;Zhang Yuansheng;Qin Manzhong;Yan Wenhua. A Study on the Seismic Velocity Changes before and after the 2016 MS 6.4 Menyuan Earthquake Using the Active Source Data in the Qilian Mountain.地震学,2018-04.
9ZhouGuangquan SuYoujin WangShaojin. Study on the Genesis of the Yongsheng Earthquake with Ms6.0 on October 27, 2001.地震学,2003-04.
10Zhan Xiaoyan;Song Xiuqing;Chen Xiangjun;Wang Jun;Miao Fajun;Liu Shuangqing;Zhu Yuanqing. Study on the Precise Location of the Xinjiang Yutian Ms 7. 3 Earthquake.地震学,2015-01.

Comparative Study of Changes in Stress-drop of the Jinggu MS6.6 and Ludian MS6.5 Earthquake Sequences

来源期刊

相关推荐

同分类资源更多

相关关键词

Comparative Study of Changes in Stress-drop of the Jinggu MS6.6 and Ludian MS6.5 Earthquake Sequences

来源期刊

相关推荐

同分类资源 更多

相关关键词

同分类资源更多