Results 1 to 10 of about 425,173 (222)
Study on three independent parameters of focal mechanism solution [PDF]
Earthquake Science, 2017 In this paper, the relationships of the plunges and azimuths of T and P axes versus the strikes, dips, and rakes of two seismic nodal planes were derived to provide reference for earthquake researchers. The independence of the plunges and azimuths of T, B, and P axes in focal mechanism solution was discussed, and it was concluded that three parameters,
Kai Tan
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Stress inversion from the focal mechanism solution of Bam earthquake aftershocks (Iran, 2003) [PDF]
Journal of Geophysics and Engineering, 2010 Stress determination can be performed by different inversion techniques using fault-slip data resulted from focal mechanism solutions obtained from earthquake shock records. Inversion methods, explicitly or implicitly, use the object function that evaluates the fitness of some assumed stress state to the fault-slip data.
Vahidoddin Fattahpour +2 more
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Applied Sciences, 2023 P-wave first-motion polarity is important for the inversion of earthquake focal mechanism solutions. The focal mechanism solution can further contribute to our understanding of the source rupture process, the fault structure, and the regional stress ...
Shuai Li +5 more
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Spatiotemporal Variations of Focal Mechanism Solutions and Stress Field of the 2019 Changning Ms 6.0 Earthquake Sequence [PDF]
Frontiers in Earth Science, 2022 The June 17, 2019, MS 6.0 Changning earthquake is the largest recorded event in the Sichuan basin, spatiotemporal variations of stress field may shed light on the seismogenic mechanism of the earthquake. We determined the focal mechanism solutions (FMSs)
Zhiwei Zhang +5 more
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A functional tool to explore the reliability of micro-earthquake focal mechanism solution for seismotectonic purposes [PDF]
Solid Earth, 2021 Abstract. Improving the knowledge of seismogenic faults requires the integration of geological, seismological, and geophysical information. Among several analyses, the definition of earthquake focal mechanisms plays an essential role in providing information about the geometry of individual faults and the stress regime acting in a region.
Guido Maria Adinolfi +3 more
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Normative expression and accurate understanding of focal mechanism parameters
Geosystems and Geoenvironment, 2023 This paper aims at the understanding of the relationship between the upper and lower hemisphere projection maps of the focal sphere, the correct reading of the focal mechanism parameters on the projection diagram, and to investigate if there is ...
Xuecan Jia +3 more
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Geophysical Journal International, 2022 SUMMARYEarthquake source parameters play a fundamental role in evaluating seismic hazard. In many countries, the relatively low accuracy of the earthquake source parameters owing to sparse seismic monitoring networks prevents accurate seismic hazard evaluation.
Nematollah Ghayournajarkar, Y. Fukushima
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Seismicity distribution and focal mechanism solution of major earthquakes of northern Pakistan [PDF]
Acta Geodaetica Et Geophysica, 2015 Pakistan is situated very close to the subduction zone of Indian-Arabian plates and Indian-Eurasian plates. Thus, it is a country with moderate to high seismicity with a large number of major earthquakes. Therefore, the severity of seismic hazards of major earthquakes is not ignorable. The seismicity of northern areas of Pakistan (33–37°N and 70–76°E),
Perveiz Khalid +2 more
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Spatial distribution and focal mechanism solutions of the Wenchuan earthquake series: Results and implications [PDF]
Earthquake Science, 2011 We relocate the spatial distribution of the devastating 12 May 2008 Wenchuan earthquake and its aftershocks. The relocation database is obtained from 89 stations deployed by the China Earthquake Administration, including 54 525 seismograms from 1 376 local earthquakes over MS3.5 between 12 May 2008 and 3 August 2008.
Chen Cai +7 more
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Comparison of solutions for microseismic focal mechanism estimation [abstract]. [PDF]
Geology, Geophysics & Environment, 2016 Paweł Wandycz +2 more
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