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Depth estimate of the DPRK’s 2006-10-09, 2009-05-25 and 2013-02-12 underground nuclear tests using local and teleseismic arrays

Title
Depth estimate of the DPRK’s 2006-10-09, 2009-05-25 and 2013-02-12 underground nuclear tests using local and teleseismic arrays
Author
이승규
Keywords
CTBT; Depth phase; Spectral ; Rg-wave; CLVD; Mt. Mantap
Issue Date
2018-09
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
JOURNAL OF ASIAN EARTH SCIENCES, v. 163, Page. 249-263
Abstract
The Democratic People’s Republic of Korea (DPRK aka North Korea) conducted underground nuclear explosions on October 9, 2006 (M 4.3), May 25, 2009 (M 4.7) and February 12, 2013 (M 5.1). We expanded standard depth calculation methods to encompass full depth utilizing spectral s of spectra using body waves and Rayleigh waves from local and teleseismic arrays. The depths of burial were calculated from the fundamental-mode Rayleigh wave spectra as well as the average spectra of depth phase (pP + P/sP + P, pPn + Pn/sPn + Pn) considering take-off angles based on the flat Earth model. The average depths of the 2006, 2009 and 2013 nuclear tests were thus estimated at 2.12 km, 2.06 km and 2.05 km, respectively. It should be noted that those depths are significantly greater than expected from the standard experiment practice. The possibility of the over- buried nuclear tests would affect the interpretation of MS-mb discriminants as well as the estimation of the yield.
URI
https://www.sciencedirect.com/science/article/pii/S1367912018302001https://repository.hanyang.ac.kr/handle/20.500.11754/81394
ISSN
1367-9120
DOI
10.1016/j.jseaes.2018.05.023
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
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