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FOCAL MECHANISM SOLUTION OF THE 15TH MARCH 2008, NYAMANDLOVU EARTHQUAKE
South African Journal of Geology, 2009The focal mechanism solution of the 15th March 2008 earthquake (mb = 4.3) that occurred in the Nyamandlovu area, northwest of Bulawayo City, Zimbabwe, has been determined from P-wave first motion polarities. Results show normal oblique left lateral faulting. The earthquake mechanism bears a signature that is almost identical to those of events recorded
B. Shumba, D. J. Hlatywayo, V. Midzi
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Massive focal mechanism solutions from deep learning in west Texas
International Meeting for Applied Geoscience & EnergyThe focal mechanism provides seismological constraints on the geological faults that generate the passive seismicity and thus is important for regional seismotectonic research. Focal mechanism calculation based on the P-wave first-motion-polarity is a widely used method, particularly helpful for microseismic events.
Yangkang Chen +7 more
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Acta Seismologica Sinica, 1998
The sequence characteristics and focal mechanism solution of the Jiashi, Xinjiang strong earthquake swarm are analyzed and studied in this paper. The result shows that before the MS=6.6 earthquake, value h of sequence frequency attenuation coefficient was less than 1, then value h was more than 1.
Xin Yang, Guo-Ying Gao
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The sequence characteristics and focal mechanism solution of the Jiashi, Xinjiang strong earthquake swarm are analyzed and studied in this paper. The result shows that before the MS=6.6 earthquake, value h of sequence frequency attenuation coefficient was less than 1, then value h was more than 1.
Xin Yang, Guo-Ying Gao
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A probability model for regional focal mechanism solutions
Bulletin of the Seismological Society of America, 1980abstract The increase in the number of determinations of fault-plane solutions and their use for inferences on regional and local tectonics and stress fields makes it advisable to treat them in a standard way in groups on a regional basis.
D. R. Brillinger, A. Udias, B. A. Bolt
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Focal Mechanism Solutions and Tectonics of the Middle America ARC
The Journal of Geology, 1978Fault plane solutions of 67 earthquakes along the Middle America arc were determined. These focal mechanisms delineate tectonic activity characteristics of a subduction zone. Focal mechanisms of shallow events beneath the trench axis indicate normal faulting resulting from initial flexure of the downgoing plate.
Bradley W. Dean, Charles L. Drake
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Damage indicators and failure prediction in Focal Mechanism solutions
2020<p>Acoustic Emissions (AE), the laboratory analogue to seismic events, recorded during conventional triaxial deformation tests allow for an unprecedented amount of information on the evolution of fractured media within a controlled environment.
Sergio Vinciguerra +3 more
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Focal mechanism solutions for roof collapse in deep mine
International Journal of Mining and Mineral Engineering, 2015Microseismic monitoring is an effective means of forecasting instabilities in ruptured rock masses during deep mining. Based on the complex geological conditions of a mine in Southwest China, a digital 24–channel microseismic monitoring system was established to monitor microseismic events during deep mining.
Chun lai Wang +8 more
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Focal-mechanism solutions of earthquakes and tectonics of the hindukush region
Tectonophysics, 1984Abstract Seventeen focal-mechanism solutions have been obtained for earthquakes occurring in the Hindukush region using P-wave first motion directions observed from short as well as long period records. These solutions have indicated a thrust type of faulting. Some of the solutions show small components of strike slip motions.
Avadh Ram, Lalaji Yadav
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