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Analytic Solution to the Moment Tensor—Anisotropy Inverse Problem
Pure and Applied Geophysics, 2020We solve an idealized version of the moment tensor—anisotropy inverse problem. The medium in which faulting occurs has general anisotropy described by 21 parameters. The data are a set of moment tensors for all possible configurations of a unit fault; that is, all combinations of strike, dip and rake (a very idealized assumption, for tectonic ...
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Effects of station coverage on moment tensor inversion
Bulletin of the Seismological Society of America, 1985AbstractThe effects of station distribution and focal mechanism on moment tensor inversion are examined by means of numerical experiment. The far-field displacements of P and Rayleigh waves computed from fault models are inverted to the moment tensor after the error corresponding to the observation error is added to the displacement.
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Reliable Moment Tensor Inversion for Regional- to Local-Distance Earthquakes
2014The reliable determination of earthquakes source moment tensor and of its uncertainty is of key importance for both geodynamic investigation and seismic hazard assessment.
PANZA, GIULIANO +2 more
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2018
When the wavelength of a seismic signal of interest is much longer than the dimension of the internal seismic source that generates the signal, whether it is an earthquake, an underground explosion or an underground mine collapse, the seismic source may be represented by a symmetric second-order moment tensor.
Xiaoning Yang +2 more
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When the wavelength of a seismic signal of interest is much longer than the dimension of the internal seismic source that generates the signal, whether it is an earthquake, an underground explosion or an underground mine collapse, the seismic source may be represented by a symmetric second-order moment tensor.
Xiaoning Yang +2 more
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Moment tensor inversion for focal mechanism of the Beibuwan earthquakes
Acta Seismologica Sinica, 1999Two earthquakes of M s=6.0 and M s=6.1 consecutively occurred on December 31, 1994 and January 10, 1995 in Beibuwan region, China. By using the generalized reflection-transmission coefficient matrix and the discrete slowness integration method in the calculation of Green’s functions, we obtained the focal mechanisms of these earthquakes using long ...
Rong-Mao Zhou +2 more
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Moment tensor inversion of microseismic events from hydrofractures
SEG Technical Program Expanded Abstracts 1999, 1999We are applying moment-tensor inversion to microseismic events emanating from hydrofractures to learn what information can be obtained from limited-view receiver geometries (for example, single boreholes, few instruments, etc.). Our first dataset is from the GRI/DOE M-Site near Rifle, Colorado.
Richard C. Nolen‐Hoeksema +1 more
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The effect of focal depth error on moment tensor inversion
Acta Seismologica Sinica, 1997In the determination of focal mechanism and rupture process of earthquake sources by using moment tensor inversion technique, it is difficult to guarantee the focal depth used in calculating the Green’s functions (theoretical focal depth) is exactly equal to the real focal depth. The difference between the theoretical and real focal depths, i.
Li-Sheng Xu, Yun-Tai Chen
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Comparison of moment tensor inversion methods in a Bayesian framework
Focal mechanism and moment tensor computation based on regional and local waveforms has become routine task in seismology. These tools are essential for understanding seismotectonic stress regimes and are among the most widely used data for stress inversion, playing a crucial role in identifying deformation zones and tectonically active structures at ...Thomas Mancuso +2 more
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