Research on Stress Drops and the Focal Mechanisms of the Xinyuan- Hejing ML6.8 Earthquake Sequences-中国期刊网

摘要 BasedonthedigitalwaveformdatarecordedbyXinjiangDigitalSeismicNetworkfortheXinyuan-HejingM_L6.8earthquakesequencesofJune30,2012,thispaperanalyzesthestressdropsofearthquakesequencesandthecorrelationcoefficientsoffocalmechanismssignificantforstrongaftershocks.Firstly,thesourceparametersoftheXinyuan-HejingM_L6.8earthquakesequencesareobtainedbyapplyingthespectrumanalysisandtheBrunessourcemodel.Then,thecorrelationcoefficientsofspectralamplitudesarecalculatedusingthelow-frequencyspectralamplituderecordedbythesamestationforthedifferentevents.Finally,basedontheresultsofthecorrelationcoefficientsofspectralamplitudes,theeventswithsimilarfocalmechanismsaregroupedusingtheclusteringmethod.Theresultsshowthat:(1)Thestressdropvaluesshowasteadytrendintheaftershocksequencecalmperiodandthestressdropvaluesshowarise-fallinstrongaftershocks.(2)Themovingaveragecorrelationcoefficientofamplitudespectrumbeginstospreadafterthemainshock.Itshowsthatthecorrelationdecreasesbetweenthemainshockandtheaftershocksinmechanisms.(3)Theresultsoffocalmechanismgroupsshowthattheearthquakesequencesaremainlystrikeslips.ThestressdistributionofthemainpressureaxisisnearlyNS,whichisthesameasthestructuralstressfield.(4)Themagnitudeandmechanismshowthatthereisanagreementbeforethestrongaftershock,whichshowsthattheregionalstressfieldisenhanced.

1Deng Fei;Liu Jie. Research on the Source Parameters and Correlation Coefficients of Focal Mechanisms for the Yingjiang Earthquake Sequences in 2008.地震学,2015-01.
2Xiaoshan Wang;Xiangdong Feng;Guiling Diao;Libing Wang;Lingling Cai. Difference between focal mechanisms of Dayao earthquake doublet sequence.地震学,2009-06.
3刁桂苓;于利民;李钦祖. Comparison　and　analysis　of　the　stress　field　in　the　source　region　of　Tangshan　and　Lancang　earthquake　sequences.地震学,1995-03.
4WangShaojin LongXiaofan 等. Focal Fault and Stress Field of the Yao‘ an M 6.5 Earthquake on January15,2001.地震学,2002-04.
5陈天长;郑斯华;ZHENG Si-hua. Earthquake focal mechanisms and stress field in Si-chuan-Yunnan area determined using P wave po-larity and short period P and S waveform data.地震学,2001-04.
6Huang Jichao;Wan Yongge. Present Tectonic Stress Field in the Capital Region of China Inverted from Focal Mechanisms of Small and Strong Earthquakes.地震学,2015-04.
7Li 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.
8Jia Ruo;Jiang Haikun. Research on Frequency of the Aftershock Sequence of the Wenchuan Earthquake Based on Coseismic Coulomb Stress Change.地震学,2015-01.
9Cheng Wanzheng Ruan Xiang Qiao Huizhen Zhang Zhiwei Zhang Yongjiu. Research on the Dynamic Change of Regional Stress Fields before the Ms8.0 Wenchuan Earthquake.地震学,2009-03.
10Lihua Sun;Yanli Zhang;Gaoxiao Zhang;Guopin Pan;Huiwei Wu;Chao Li;Ling Wang;Baofeng Yang. Mechanisms of Arrhythmia Induced by Focal Cerebral Ischemia in Rats.药学,2008-02.

Research on Stress Drops and the Focal Mechanisms of the Xinyuan- Hejing ML6.8 Earthquake Sequences

来源期刊

相关推荐

同分类资源更多

相关关键词

Research on Stress Drops and the Focal Mechanisms of the Xinyuan- Hejing ML6.8 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