scholarly journals Hyperspectral vegetation identification at a legacy underground nuclear explosion test site

2019 ◽  
Author(s):  
Brian J. Redman ◽  
John D. van der Laan ◽  
Dylan Z. Anderson ◽  
Julia M. Craven ◽  
Elizabeth D. Miller ◽  
...  
Keyword(s):  
Nuclear Explosion ◽  
Test Site ◽  
Underground Nuclear Explosion ◽  
Explosion Test

scholarly journals High Incidence of Micronuclei in Lymphocytes from Residents of the Area near the Semipalatinsk Nuclear Explosion Test Site

2000 ◽  
Vol 41 (1) ◽  
pp. 45-54 ◽  
Author(s):  
KIMIO TANAKA ◽  
NAILYA J. TCHAIJUNUSOVA ◽  
TOSHIHIRO TAKATSUJI ◽  
BORIS I. GUSEV ◽  
ALEXANDER K. H. SAKERBAEV ◽  
...  
Keyword(s):  
Nuclear Explosion ◽  
Test Site ◽  
High Incidence ◽  
Explosion Test

Distribution, focal mechanisms, and frequency of earthquakes in the Fairview Peak area, Nevada, near the time of the BENHAM explosion

1972 ◽  
Vol 62 (5) ◽  
pp. 1223-1240 ◽  
Author(s):  
B. E. Smith ◽  
J. M. Coakley ◽  
R. M. Hamilton
Keyword(s):  
Fault Plane ◽  
Nuclear Explosion ◽  
Test Site ◽  
Underground Nuclear Explosion ◽  
Nevada Test Site ◽  
Vertical Orientation ◽  
Fault Plane Solutions ◽  
Pressure Axis ◽  
Tension Axis ◽  
The One

Abstract Six portable seismographs were operated for 30 days in a network centered 25 km south of the epicenter of the 1954 Fairview Peak earthquake. The recording period lasted from 15 days before to 15 days after detonation of the one-megaton BENHAM underground nuclear explosion 250 km to the southeast of the Nevada Test Site on December 19, 1968. Approximately 950 earthquakes were detected within about 30 km of the network. No evidence was found that the explosion affected the rate of earthquake occurrence. Locations were computed for 152 earthquakes. The epicentral pattern shows north and northeast trends about 1 to 3 km wide. Focal depths range from 5 to 14 km. The main zones of activity seem to have a near-vertical orientation. Composite fault-plane solutions suggest that faulting within zones is not consistent with a single focal mechanism. Instead, a variety of mechanisms is indicated, consisting primarily of north-striking right-lateral oblique-slip, and northeast-striking dip-slip movements. In both cases, the pressure axis is near vertical and the tension axis is near horizontal, striking about S60°E.

scholarly journals Geomagnetic conjugate observations of ionospheric disturbances in response to a North Korean underground nuclear explosion on 3 September 2017

2019 ◽  
Vol 37 (3) ◽  
pp. 337-345
Author(s):  
Yi Liu ◽  
Chen Zhou ◽  
Qiong Tang ◽  
Guanyi Chen ◽  
Zhengyu Zhao
Keyword(s):  
Electric Field ◽  
Nuclear Explosion ◽  
Test Site ◽  
Conjugate Points ◽  
Ionospheric Disturbances ◽  
Underground Nuclear Explosion ◽  
International Gnss Service ◽  
Swarm Satellites ◽  
Electric Field Penetration ◽  
Field Penetration

Abstract. We report observations of ionospheric disturbances in response to a North Korean underground nuclear explosion (UNE) on 3 September 2017. By using data from IGS (International GNSS Service) stations and Swarm satellites, geomagnetic conjugate ionospheric disturbances were observed. The observational evidence showed that UNE-generated ionospheric disturbances propagated radially from the UNE epicenter with a velocity of ∼280 m s−1. We propose that the ionospheric disturbances are results of electrodynamic process caused by LAIC (lithosphere–atmosphere–ionosphere coupling) electric field penetration. The LAIC electric field can also be mapped to the conjugate hemispheres along the magnetic field line and consequently cause ionospheric disturbances in conjugate regions. The UNE-generated LAIC electric field penetration plays an important role in the ionospheric disturbances in the region of the nuclear test site nearby and the corresponding geomagnetic conjugate points.

Microearthquake activity in Eastern Nevada and death valley California before and after the nuclear explosion Benham

1969 ◽  
Vol 59 (6) ◽  
pp. 2177-2184
Author(s):  
Peter Molnar ◽  
Klaus Jacob ◽  
Lynn R. Sykes
Keyword(s):  
Nuclear Explosion ◽  
Active Regions ◽  
Test Site ◽  
Death Valley ◽  
Tectonic Activity ◽  
Earthquake Activity ◽  
Underground Nuclear Explosion ◽  
Nevada Test Site ◽  
Pronounced Increase ◽  
Before And After

abstract Six portable, high-gain, high-frequency seismographs were operated in Nevada and California for several weeks before and after the underground nuclear explosion Benham to assess the possibility that earthquakes at distances of tens of kilometers or more may be triggered by large underground explosions. A pronounced increase in earthquake activity in the vicinity of the shot point was observed immediately after the detonation and continued for more than a month after the explosion. No significant change in activity within 25 km of any of our instruments northeast of the Nevada Test Site was observed, and the activity in Death Valley recorded after the explosion did not indicate an important increase. These data imply that this particular explosion did not significantly affect the seismicity of the region studied. Throughout the period of observation the seismic activity northeast of the Nevada Test Site was low; an average of about one event per day was detected within about 25 km of each station. This suggests that the current tectonic activity of this part of Nevada is lower than that of western Nevada and of most other tectonically active regions where microearthquake studies have been made.

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