Focal Mechanism Solution of the February 23,2014,M_L3.8 Rongchang Earthquake with the CAP (Cut and Paste) Method-中国Betway体育网页登陆

摘要 AM_L3.8earthquakeoccurredonFebruary23,2014inRongchangCounty,whichislocatedatthesouthernedgeoftheSichuanBasinintheborderareabetweenSichuanandChongqing.ThispaperpresentsresultsoffocalmechanismsolutionofthisearthquakeusingtheCAP(cutandpaste)methodbasedonbroadbandseismogramsrecordedbyregionalseismicstations.OurresultsshowthatthemomentmagnitudeisM_W3.09andfocaldepthis3km.ThehypocenterofthisearthquakeislocatedclosetoaburiedfaultintheLuoguangshananticline.Oilprospectinganddeepdrillingdataindicatethatthisburiedfaultisathrustfault,strikingSW230°,dippingNW45°,and1.7kmdeep.Therearesomeinjectionwellswithintheanticline,andsignificantinjection-inducedearthquakeswereobservedduringtheperiodsofinjectionofwastewaterintothedeepformationsthroughthosewells.ThebestdoublecouplesolutionoftheM_L3.8earthquakeis247°,48°and104°forstrike,dipandrate,respectively,foronenodalplane(and46°,44°and74°foranothernodalplane),whichisinagreementwiththegeometryoftheburiedfault.Therefore,weconcludethattheM_L3.8Rongchangearthquakeispossiblytheresultoffaultingalongtheburiedreversefaultinducedbywaterinjectionunderthecompressivestressregimeinthearea.

1Li Jin;Wang Qiong.Analysis on Characteristics of Focal Mechanisms for the MS7.3 Yutian Earthquake Sequence of February 12,2014.地震学,2015-04.
2Qi Li;Kai Tan.Study on three independent parameters of focal mechanism solution.地震学,2017-01.
3Qiu Yi;Li Jun;Kang Lanchi;Yuan Liwen.Focal Mechanism of the Xianyou Earthquake Sequence, Fujian, China.地震学,2014-04.
4Wang Xiaolong;Ma Shengli;Lei Xinglin;Guo .Xin;Wang Qiang;Yu Guozheng;Gou Xianbin;Kuwahara Yasuto;Imanishi Kazutoshi;Jiang Xiadong.Fine Velocity Structure and Relocation of the 2010 M_L 5. 1 Earthquake Sequence in the Rongchang Gas Field.地震学,2012-04.
5程万正;陈天长.Complex　time－space　spreading　and　focal　mechanism　of　the　1989　Batang　earthquake　swarm　（M_s＝6．7）.地震学,1994-02.
6Song Xiuqing;Miao Fajun;Liu Shuangqing;Chen Xiangjun;Wang Jun;Zhu Yuanqing.Focal Depth Determination of the 2014 Yutian MS 7.3 Earthquake Sequence, Xinjiang.地震学,2014-04.
7Meng Lingyuan;Zhou Longquan;Shi Haixia.A Study on the Characteristics of the Yutian, Xinjiang Ms 7.3 Earthquake, February 12,2014.地震学,2015-01.
8ZHU Junjiang ZHAN Wenhuan QIU Xuelin XU Huilong TANG Cheng.EARTHQUAKE FOCAL MECHANISM AND ITS TECTONIC SIGNIFICANCE ALONG THE TWO SIDES OF THE RED RIVER FAULT ZONE.地质学,2004-01.
9Gao Lijuan;Xing Ximin;Gao Ge;Zhang Zhiguang;Teng Haitao.Deformation Anomalies before the February 12, 2014, MS7. 3 Yutian Earthquake.地震学,2014-04.
10WangShaojin LongXiaofan 等.Focal Fault and Stress Field of the Yao‘ an M 6.5 Earthquake on January15,2001.地震学,2002-04.

Focal Mechanism Solution of the February 23,2014,M_L3.8 Rongchang Earthquake with the CAP (Cut and Paste) Method

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