Relative locations among the 2006,2009 and 2013 North Korean underground nuclear tests
Pan Changzhou
Jin Ping
Xu Xiong
Wang Hongchun
Xiao Weiguo
Shen Xufeng
Zhang Chengliu
Xu Henglei
Abstract：The relative locations among the 9 October 2006,25 May 2009,and 12 February 2013 North Korean underground nuclear tests are estimated by the double-difference location algorithm,using the relative times of P signals as well as those of S and LR signals.And location uncertainties are analyzed by bootstrap method.The relative times are measured with cross-correlation tech-nique,using vertical waveform data recorded at 1 9 regional and 8 teleseismic stations.The results show that the 2013 test locates 257 m south and 385 m west relative to the 2009 test with about 150 m uncertainty estimated with 20 stations resampling at 95% confidence level,and the 2006 test is about 503 m south and 2 589 m east to the 2009 test with the same uncertainty.
Keywords：nuclear testsNorth Korearelative locationdouble-difference earthquake location algorithm
Publication Date：2014-01-01
Pages：9( 910-918 )