Seismic and Infrasonic Analysis of the Major Bolide Event of 15 February 2013

Antolik, Michael; Ichinose, Gene A.; Creasey, J. W.; Clauter, Dean A.

doi:10.1785/0220130061

Cited by 12 publications

(13 citation statements)

References 31 publications

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“…Le Pichon et al () obtained an average yield of 460 kt with a range between 0.1 and 1.4 Mt, based on the empirical period‐yield relation of the infrasound data. In addition, the empirical relation between the explosive yield and M S was also applied to estimate the yield of a bolide (Antolik et al, ). Antolik et al () calculated a Rayleigh‐wave magnitude of M S = 4.06±0.22 and, by assuming a coupling coefficient of 0.001% between the yield and M S , obtained an estimate of approximately 300 kt for the energy released from the bolide blast.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Heimann et al () investigated the seismic source parameters of the Chelyabinsk event through full waveform fitting based on an isotropic atmospheric airburst model, and Antolik et al () obtained the source mechanism parameters for the explosion based on a full moment tensor solution.…”

Section: Introductionmentioning

confidence: 99%

“…Seismic records of the 15 February 2013 Chelyabinsk bolide explosion are investigated quantitatively in order to improve estimations of the threat to Earth posed by impact of large asteroids. Antolik et al (2014) calculated a Rayleigh-wave magnitude of 4.06±0.22 and, by assuming a coupling coefficient of 0.001% between the yield and , obtained an estimate of approximately 300 kt for the energy released from the bolide blast. Furthermore, Heimann et al (2013) investigated the seismic source parameters of the Chelyabinsk event through full waveform fitting based on an isotropic atmospheric airburst model, and Antolik et al (2014) obtained the source mechanism parameters for the explosion based on a full moment tensor solution.…”

Section: Introductionmentioning

confidence: 99%

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Seismic characteristics of the 15 February 2013 bolide explosion in Chelyabinsk, Russia

Wei

Zhao

Xie

et al. 2018

Earth and Planetary Physics

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The seismological characteristics of the 15 February 2013 Chelyabinsk bolide explosion are investigated based on seismograms recorded at 50 stations with epicentral distances ranging from 229 to 4324 km. By using 8–25 s vertical‐component Rayleigh waveforms, we obtain a surface‐wave magnitude of 4.17±0.31 for this event. According to the relationship among the Rayleigh‐wave magnitude, burst height and explosive yield, the explosion yield is estimated to be 686 kt. Using a single‐force source to fit the observed Rayleigh waveforms, we obtain a single force of 1.03×1012 N, which is equivalent to the impact from the shock wave generated by the bolide explosion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seismic characteristics of the 15 February 2013 bolide explosion in Chelyabinsk, Russia

Wei

Zhao

Xie

et al. 2018

Earth and Planetary Physics

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“…Ens et al (2012) showed that events detected with many stations may have more accurate yields estimated using the dominant period average across all stations, but such averaging is only possible for a limited subset of well observed events. A similar approach has been employed for ground based explosions by the Air Force Technical Applications Centre (AFTAC) which assumes a log normal distribution of periods (Antolik et al, 2014). The root cause of the dispersion in signal periods remains unknown.…”

Section: Introductionmentioning

confidence: 99%

Refinement of bolide characteristics from infrasound measurements

Brown

2017

Planetary and Space Science

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We have detected and performed signal measurements on 78 individual bolide events as recorded at 179 infrasound stations between 2006 and 2015. We compared period-yield relations with AFTAC nuclear period-yield data, finding these to be similar with a slight offset. Scatter in period measurements for individual bolide is found to be caused in part by station noise levels and by attenuation effects with range. No correlation was found between the infrasound signal period and any of bolide height at peak brightness, entry speed or impact angle. We examined in detail three well constrained bolides having energy deposition curves, known trajectories and infrasound detections finding some evidence at shorter ranges that a component of station period scatter is due to varying source heights sampled by different stations. However, for longer-range stations in these three case studies, we were not able to assign unique source heights using raytracing due to large uncertainties in atmospheric conditions. Our results suggest that while source height contributes to the observed variance in infrasound signal periods from a given bolide, range and station noise play a larger role.

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“…It is the largest recorded meteor event since the 1908 Tunguska event (Ben-Menahem 1975). The equivalent yield of the explosion was about 500 kt of trinitrotoluene (TNT) (Antolik et al 2014). Many studies focused on the trajectory and speed of the bolide (Borovička et al 2013;Seleznev et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Seismic detections of the 15 February 2013 Chelyabinsk meteor from the dense ChinArray

Wang

Peng

et al. 2016

Earthq Sci

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ChinArray is a dense portable broadband seismic network to cover the entire continental China, and the Phase I is deployed along the north-south seismic belt in southwest China. In this study, we analyze seismic data recorded on the ChinArray following the February 15, 2013 Chelyabinsk (Russia) meteor. This was the largest known object entering the Earth's atmosphere since the 1908 Tunguska meteor. The seismic energy radiated from this event was recorded by seismic stations worldwide including the dense ChinArray that are more than 4000 km away. The weak signal from the meteor event was contaminated by a magnitude 5.8 Tonga earthquake occurred *20 min earlier. To test the feasibility of detecting the weak seismic signals from the meteor event, we compute vespagram and perform F-K analysis to the surface-wave data. We identify a seismic phase with back azimuth (BAZ) of 329.7°and slowness of 34.73 s/deg, corresponding to the surface wave from the Russian meteor event (BAZ *325.97°). The surface magnitude (M S) of the meteor event is 3.94 ± 0.18. We also perform similar analysis on the data from the broadband array F-net in Japan, and find the BAZ of the surface waves to be 316.61°. With the different BAZs of ChinArray and F-net, we locate the Russian meteor event at 58.80°N, 58.72°E. The relatively large mislocation (*438 km as compared with 55.15°N, 61.41°E by others) may be a result of the bending propagation path of surface waves, which deviates from the great circle path. Our results suggest that the dense ChinArray and its subarrays could be used to detect weak signals at teleseismic distances.

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Seismic and Infrasonic Analysis of the Major Bolide Event of 15 February 2013

Cited by 12 publications

References 31 publications

Seismic characteristics of the 15 February 2013 bolide explosion in Chelyabinsk, Russia

Seismic characteristics of the 15 February 2013 bolide explosion in Chelyabinsk, Russia

Refinement of bolide characteristics from infrasound measurements

Seismic detections of the 15 February 2013 Chelyabinsk meteor from the dense ChinArray

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