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[1]LIU Xingwang,YUAN Daoyang,HE Wengui,et al.Preliminary Study on Characteristic of Paleoearthquakes on the Lancang Fault in the Southwestern Area of Yunnan[J].Journal of Seismological Research,2016,39(03):376-385.

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Preliminary Study on Characteristic of Paleoearthquakes on the Lancang Fault in the Southwestern Area of Yunnan

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 39 Number of periods: 2016 03 Page number: 376-385 Column: Public date: 2016-07-23

Title:: Preliminary Study on Characteristic of Paleoearthquakes on the Lancang Fault in the Southwestern Area of Yunnan

Author(s):: LIU Xingwang¹; 2; 3; YUAN Daoyang¹; HE Wengui¹; 2; ZHANG Bo¹; 2; FANG Lianghao⁴; (1.Lanzhou Institute of Seismology,CEA,Lanzhou 730000,Gansu,China)(2.Lanzhou Base of Institute of Earthquake Science,CEA,Lanzhou 730000,Gansu,China)(3.Key Laboratory of western China's Environmental System with the ministry of Education,Lanzhou University,Lanzhou 73000,Gansu,China)(4.Earthquake Administration of Anhui Province,Hefei 230031,Anhui,China)

Keywords:: Lancang Fault; paleoearthquake; earthquake recurrence interval; ¹⁴C dating

CLC:: P315.2

DOI:: -

Abstract:: According to satellite image interpretation,field investigation and geological mapping,we investigated the latest activity of Lancang Fault which is located in the southwestern area of Yunnan.On the basis of characteristic of the latest activity of Lancang Fault,we focus on analyzing the characteristic of the paleoearthquakes on the fault.After analyzing the three trench profile in detail on the middle south segment of the fault and the testing of the sample dating,we primarily determined that the occurrence time of six paleoearthquakes was about 3700 a,2 300～2 500 a,900～1 200 a,1 200～2 000 a,500～600 a,and 20 a ago respectively.The paleoearthquakes had the characteristics of periodic recurrence,and the recurrence interval is 500～600 a.

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