Regional Seismic Characteristics of the 9 October 2006 North Korean Nuclear Test
Regional Seismic Characteristics of the 9 October 2006 North Korean Nuclear Test
复制标题
2006 年 10 月 9 日朝鲜核试验的区域地震特征
DOI:
10.1785/0120080128
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发表时间:
2008-12
影响因子:
3
通讯作者:
Yao Zhen-Xing
中科院分区:
文献类型:
--
作者:
Zhao Lian-Feng;Xie Xiao-Bi;Wang Wei-Min;Yao Zhen-Xing
We investigate the regional seismic signature of the 9 October 2006 North Korean nuclear test. Broadband regional data for the nuclear test and a group of earthquakes close to the test site were obtained between December 2000 and No- vember 2006. Epicentral distances from the stations to the test site are between 371 and 1153 km. We first use these regional events to calibrate the Lg-wave magnitude in the network. Then the network is used to calculate mbLg �� 3:93 for the North Ko- rean nuclear explosion. Using a modified fully coupled magnitude-yield relation, the yield of the North Korean nuclear test is estimated to be 0.48 kt. Because of large uncertainties in the source depth, the estimate is preliminary. The P=S-type spectral ratios Pg=Lg, Pn=Lg, and Pn=Sn are calculated for the nuclear explosion and a group of earthquakes close to the test site. At frequencies above 2 Hz, the network-averaged P=S spectral ratios clearly separate the 9 October 2006 explosion from the regional earthquakes. Our result indicates that a single-blast explosion in the North Korea re- gion shows different seismic characteristics from an earthquake. Any well-coupled single-blast explosion detonated in this region with yield similar to that for the North Korean nuclear test has a large probability of being identified by a regional seismic network such as the one adopted in this study.
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DOI:
--
发表时间:
2007-07
期刊:
--
影响因子:
--
作者:
R. Herrmann;W. Walter;M. Pasyanos
通讯作者:
R. Herrmann;W. Walter;M. Pasyanos
影响因子:
2.8
作者:
H. Patton;J. Schlittenhardt
通讯作者:
H. Patton;J. Schlittenhardt
影响因子:
3
作者:
J. R. Bowman;B. Kennett
通讯作者:
J. R. Bowman;B. Kennett
影响因子:
--
作者:
Jiakang Xie
通讯作者:
Jiakang Xie
DOI:
10.1029/2007eo140002
发表时间:
2007-04
期刊:
Eos, Transactions American Geophysical Union
影响因子:
--
作者:
Won-Young Kim;P. Richards
通讯作者:
Won-Young Kim;P. Richards