Analysis for Basic Characteristic of Ninglang-Yanyuan MS5.7 Earthquake and Its Precursory Anomaly in Yunnan in 2012
详细信息   
摘要

    

An MS5.7 earthquake occurred in Ninglang Country, Yunnan Province on Jun.24, 2012, and its macroscopic epicenter was located at Yongning Village of Yongning Township in Ninglang Country. The aftershock distributed in the north side of the main shock in nearly NW direction and was consistent with the intensity distribution in the meizoseismal area. The main rupture surface was the nodal plane , the direction of principal compressive stress P-axis was in SE direction and the triggering seismic fault was the Yongning Fault in nearly NW direction. There were 12 precursory anomalies in 8 anomaly items, including 4 anomalies in seismometry, 5 fixed-point precursor anomalies and 3 macroscopic anomalies, which were short-term anomalies before Ninglang MS5.7 earthquake.oft-com:office:office" />


    

 

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