Source features, scaling, and location of calibration explosions in Israel and Jordan for Comprehensive Test Ban Treaty (CTBT) monitoring

Gitterman, Yefim; Pinsky, Vladimir; Amrat, Abdel-Qader; Darwish, Jaser; Mayyas, Omar; Nakanishi, K. K.; Hofstetter, Rami

doi:10.1560/f4h4-3m50-867v-25g5

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…2a), with an average of nine stations for each event of a total of 45 stations that operated at various periods of time. Horizontal dashed lines divide the crust into upper and lower units, as well as the upper mantle, following the velocity models of Feigin & Shapira (1994) and Gitterman et al (2005). of the short-period and broad-band seismic stations, are reported from 1983 to 2009 by the ISN and JSO bulletins. Seismic stations that were in operation for less than 10 yr and for more than 10 yr are presented by open and solid triangles, respectively; (c) number of earthquakes as a function of the depth for the entire Dead Sea Basin (circles), northern Dead Sea Basin (triangles) and southern Dead Sea Basin (squares).…”

Section: Data a C Q U I S I T I O N A N D P Ro C E S S I N Gmentioning

confidence: 99%

“…Seismic stations that were in operation for less than 10 yr and for more than 10 yr are presented by open and solid triangles, respectively; (c) number of earthquakes as a function of the depth for the entire Dead Sea Basin (circles), northern Dead Sea Basin (triangles) and southern Dead Sea Basin (squares). Horizontal dashed lines divide the crust into upper and lower units, as well as the upper mantle, following the velocity models of Feigin & Shapira (1994) and Gitterman et al (2005). of the short-period and broad-band seismic stations, are reported from 1983 to 2009 by the ISN and JSO bulletins. All traces of each event were visually compared and correlated using distinct phases, such as P and S. The reading error is estimated to be less than 0.05 s. We discarded doubtful readings, that is, unclear emergent arrivals or poor signal-to-noise ratios.…”

Section: Data a C Q U I S I T I O N A N D P Ro C E S S I N Gmentioning

confidence: 99%

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Crustal structure of the Dead Sea Basin from local earthquake tomography

Hofstetter

Dorbath²,

Calò³

2012

Geophysical Journal International

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International audienceNew findings of the velocity structure of the crust across the Dead Sea Basin are obtained by applying tomography-based method to local earthquakes. We use P-wave traveltime of 614 earthquakes that occurred in the Dead Sea Basin in 1983-2009. At all depths, the Dead Sea Basin is characterized by lower velocities relative to both the eastern and western sides of the basin. There is significant seismic activity at a depth of about 20 km, mainly in the centre and the northern part of the basin. At shallow depths (<15 km) there is more seismic activity on the eastern side of the basin than on the western side, and the northern basin is generally more active than the southern basin. Asymmetry is also observed in the faults that border the Dead Sea Basin. The Arava Fault on the eastern side, with nearly vertical dip faulting, appears to be a clear boundary at all depths down to about 20 km. The depth extension of the Jericho Fault on the western side of the basin is definitely limited to less than 15 km. At greater depths of 20 km or more, the western side is only partially bounded by a fault. The concentration of earthquakes in the central part of the basin at depths larger than 15 km suggests that the Dead Sea Fault at those depths acts as one single fault that is located in, or near, the central axis of the basin. The existence of a number of clusters of earthquakes that spread from shallow depths of a few kilometres up to a depth of about 22 km, points to several defined faults that traverse the Dead Sea Basin. One such example is the aftershock sequence of the 2004 earthquake that occurred in the northern Dead Sea Basin. Seismic activity near Mt Sodom is relatively low and occurs at shallow depths down to 10 km, whereas at larger depths (≥15 km) it ceases. This implies that the whole structure is relatively shallow with no wide and deeper extension. Seismic activity near and within the Lisan Peninsula extends to somewhat larger depths (∼15 km), and then it ceases. The occurrence of earthquakes at large depths suggests that the upper and the lower crust are relatively cool, as was also suggested by earlier studies, pointing to the fact that the heat flow is significantly below the global average value

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Section: Data a C Q U I S I T I O N A N D P Ro C E S S I N Gmentioning

confidence: 99%

Section: Data a C Q U I S I T I O N A N D P Ro C E S S I N Gmentioning

confidence: 99%

Crustal structure of the Dead Sea Basin from local earthquake tomography

Hofstetter

Dorbath²,

Calò³

2012

Geophysical Journal International

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Instrumental Data on the Seismic Activity Along the Dead Sea Transform

Hofstetter

Dorbath

2014

Modern Approaches in Solid Earth Sciences

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Investigation of near-surface chemical explosions effects using seismo-acoustic and synthetic aperture radar analyses

Hamama

Yamamoto

Gabry

et al. 2022

The Journal of the Acoustical Society of America

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Chemical explosions are ground truth events that provide data, which, in turn, can enhance the understanding of wave propagation, damage assessment, and yield estimation. On 4 August 2020, Beirut, Lebanon was shocked by a catastrophic explosion, which caused devastating damage to the Mediterranean city. A second strong chemical explosion took place at the Xiangshui, China chemical plant on 21 March 2019. Both events generated shock waves that transitioned to infrasound waves, seismic waves, as well as hydroacoustic signals with accompanying T-phases in the case of the Beirut event. In this work, the seismo-acoustic signatures, yields, and associated damage of the two events are investigated. The differentiainterferometry synthetic aperture radar analysis quantified the surface damage and the estimated yield range, equivalent to 2,4,6-trinitrotoluene [C7H5(NO2)3] (TNT), through a “boom” relation of the peak overpressure was evaluated. Infrasound propagation modeling identified a strong duct in the stratosphere with the propagation to the west in the case of the Beirut-Port explosion. In the case of the Xiangshui explosion, the modeling supports the tropospheric propagation toward the Kochi University of Technology (KUT) sensor network in Japan. Although the Beirut yield (202–270 ± 100 tons) was slightly larger than the Xiangshui yield (201 ± 83.5 tons), the near-source damage areas are almost the same based on the distribution of damaged buildings surrounding the explosions.

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Source features, scaling, and location of calibration explosions in Israel and Jordan for Comprehensive Test Ban Treaty (CTBT) monitoring

Cited by 6 publications

References 4 publications

Crustal structure of the Dead Sea Basin from local earthquake tomography

Crustal structure of the Dead Sea Basin from local earthquake tomography

Instrumental Data on the Seismic Activity Along the Dead Sea Transform

Investigation of near-surface chemical explosions effects using seismo-acoustic and synthetic aperture radar analyses

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