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North Korean nuclear test site

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Journal Article
Published: 06 May 2015
Seismological Research Letters (2015) 86 (4): 1160–1170.
.... (2012) examined five 24‐hour time periods proposed by De Geer (2012) at station MDJ and concluded, “… no well‐coupled explosion above about a ton occurred near the North Korean nuclear test site in the year 2010 on the five days hypothesized by De Geer.” The event reported by Zhang and Wen (2015...
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Journal Article
Published: 26 September 2018
Seismological Research Letters (2018) 89 (6): 2042–2048.
...Xi He; Lian‐Feng Zhao; Xiao‐Bi Xie; Zhen‐Xing Yao ABSTRACT On 3 September 2017, a strong seismic event occurred at the North Korean nuclear test site near the border between China and North Korea. Using P / S ‐type spectral ratios calculated from regional seismic data, we identified this event...
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First thumbnail for: High‐Precision Relocation and Event Discrimination...
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Journal Article
Published: 01 September 2007
Seismological Research Letters (2007) 78 (5): 487–497.
... monitoring setup for the North Korean nuclear test site, using as calibration information the data recorded by the IMS network and the Incorporated Research Institutions for Seismology (IRIS) stations for the North Korean nuclear explosion on 9 October 2006. Both the U.S. Geological Survey (USGS...
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Journal Article
Published: 19 September 2018
Seismological Research Letters (2018) 89 (6): 2120–2130.
... of the North Korean nuclear test site. In practice, this equation for the LDF, in application to MDJ data using only the vertical component, becomes, of length 4 (with r 1 , r 2 , r 3 , r 4 being log 10 P/S values sampled at 6, 7, 8, and 9 Hz, respectively...
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Map showing the locations of the North Korean nuclear test site (NKTS; red star), the China National Digital Seismic Network (CNDSN; solid circles), Global Seismic Network (GSN; solid squares), and F‐NET (triangles) stations used for relocation. Station MDJ (pointed by an arrow) and two seismic events occurred on 12 September 2016 (green symbols) are also labeled. NK, North Korea; SK, South Korea.
Published: 31 October 2017
Figure 1. Map showing the locations of the North Korean nuclear test site (NKTS; red star), the China National Digital Seismic Network (CNDSN; solid circles), Global Seismic Network (GSN; solid squares), and F‐NET (triangles) stations used for relocation. Station MDJ (pointed by an arrow) and two
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Geographical location of the North Korean Nuclear Test Site (NKTS) and three International Monitoring System (IMS) arrays. MJAR (IMS array deployed in Japan) and MKAR (IMS array deployed in Kazakhstan) recorded all announced nuclear tests conducted by North Korea (2006, 2009, 2013, and 2016).
Published: 13 September 2016
Figure 5. Geographical location of the North Korean Nuclear Test Site ( NKTS ) and three International Monitoring System ( IMS ) arrays. MJAR ( IMS array deployed in Japan) and MKAR ( IMS array deployed in Kazakhstan) recorded all announced nuclear tests conducted by North Korea (2006, 2009
Journal Article
Published: 31 October 2017
Bulletin of the Seismological Society of America (2017) 107 (6): 3044–3051.
...Figure 1. Map showing the locations of the North Korean nuclear test site (NKTS; red star), the China National Digital Seismic Network (CNDSN; solid circles), Global Seismic Network (GSN; solid squares), and F‐NET (triangles) stations used for relocation. Station MDJ (pointed by an arrow) and two...
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Journal Article
Published: 05 April 2016
Bulletin of the Seismological Society of America (2016) 106 (2): 478–498.
... estimate threshold magnitudes for hypothetical explosions located at the North Korean nuclear test site over 6 months of 2010, by processing International Monitoring System ( IMS ) array data with a multichannel waveform correlation detector. Our method (1) accounts for low‐amplitude background seismicity...
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Journal Article
Published: 20 December 2016
Bulletin of the Seismological Society of America (2017) 107 (1): 22–33.
... to receiver‐side dominance in the spreading. Laterally varying crustal thickness is explored in the context of the North Korean nuclear test site, for which many observations of Pn are made by stations with paths either through continental structure or along paths with variation from continental to oceanic...
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Regional seismic stations (blue triangles) used in this study. The red dot indicates the location of North Korean nuclear test site. The color version of this figure is available only in the electronic edition.
Published: 21 November 2023
Figure 1. Regional seismic stations (blue triangles) used in this study. The red dot indicates the location of North Korean nuclear test site. The color version of this figure is available only in the electronic edition.
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Distribution of earthquakes and seismic stations used in this study. Circles and triangles represent epicenters and stations, respectively. The dashed lines represent the geological boundaries. The black diamond denotes the location of the North Korean nuclear test site.
Published: 26 July 2016
Figure 1. Distribution of earthquakes and seismic stations used in this study. Circles and triangles represent epicenters and stations, respectively. The dashed lines represent the geological boundaries. The black diamond denotes the location of the North Korean nuclear test site.
Image
Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation (A15). The green line shows an arbitrary  correlation value. (b) The intrachannel stack of the 2013 test waveforms. The green portions of the waveforms show where the 2009 and 2013 data are correlated above  and indicate that the two multichannel signals are not uniformly correlated across their duration.
Published: 05 April 2016
Figure A1. Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation  (A15) . The green line
Image
Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation (A15). The green line shows an arbitrary  correlation value. (b) The intrachannel stack of the 2013 test waveforms. The green portions of the waveforms show where the 2009 and 2013 data are correlated above  and indicate that the two multichannel signals are not uniformly correlated across their duration.
Published: 05 April 2016
Figure A1. Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation  (A15) . The green line
Image
Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation (A15). The green line shows an arbitrary  correlation value. (b) The intrachannel stack of the 2013 test waveforms. The green portions of the waveforms show where the 2009 and 2013 data are correlated above  and indicate that the two multichannel signals are not uniformly correlated across their duration.
Published: 05 April 2016
Figure A1. Localized correlation between the prealigned multichannel waveforms recording the 2009 and 2013 announced North Korean Nuclear Test Site (NKTS) explosions. (a) The local sample correlation between the prealigned waveforms in a 1 s sliding window using equation  (A15) . The green line
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Two models that we used. (a) AK135 is a simple 1D model with a two‐layer crust. The cross section through (b) SALSA3D is laterally varying, has a higher crustal velocity than AK135, and is a three‐layer model. The coordinates used to create the SALSA3D cross section are (40.852, 128.954) to (49.790, 130.471). The sources are located at −450 km, which for SALSA3D corresponds to the location of the North Korean nuclear test site. We obtained S‐wave velocity and density anomalies by scaling AK135 by the same percentage as the difference between SALSA3D and AK135 P‐wave velocity.
Published: 28 February 2023
) to (49.790, 130.471). The sources are located at −450 km, which for SALSA3D corresponds to the location of the North Korean nuclear test site. We obtained S ‐wave velocity and density anomalies by scaling AK135 by the same percentage as the difference between SALSA3D and AK135 P ‐wave velocity.
Journal Article
Published: 01 April 2012
Bulletin of the Seismological Society of America (2012) 102 (2): 467–478.
... of open seismic data from the North Korea event of 9 October 2006 , Seismol. Res. Lett. 79 , 178 - 185 , doi 10.1785/gssrl.79.2.178 . Kvaerna T. Ringdal F. Baadshaug U. ( 2007 ). North Korea’s nuclear test: The capability for seismic monitoring of the North Korean test site...
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Journal Article
Published: 01 December 2008
Bulletin of the Seismological Society of America (2008) 98 (6): 2571–2589.
...Lian-Feng Zhao; Xiao-Bi Xie; Wei-Min Wang; Zhen-Xing Yao Abstract 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...
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Journal Article
Published: 20 October 2020
Bulletin of the Seismological Society of America (2021) 111 (1): 606–620.
... discriminate explosions from earthquakes at both the North Korean and the Semipalatinsk test sites at frequencies above 2.0 Hz. Based on 13 known‐yield CEx, we selected an empirical magnitude–yield relation to constrain the explosive yields of five historical nuclear tests at the Semipalatinsk test site...
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Journal Article
Published: 24 November 2020
Bulletin of the Seismological Society of America (2021) 111 (1): 590–605.
.... In general, the earthquakes have larger M s than the underground explosions with equivalent m b . However, it has been reported that this recognition criterion failed to identify some explosions at the North Korea nuclear test site. In this study, we investigate the potential effects of secondary source...
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Journal Article
Published: 13 September 2016
Bulletin of the Seismological Society of America (2016) 106 (5): 1998–2012.
...Figure 5. Geographical location of the North Korean Nuclear Test Site ( NKTS ) and three International Monitoring System ( IMS ) arrays. MJAR ( IMS array deployed in Japan) and MKAR ( IMS array deployed in Kazakhstan) recorded all announced nuclear tests conducted by North Korea (2006, 2009...
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