The Moment Tensor
On the robustness of seismic moment tensor inversions for mid-ocean earthquakes: the Azores archipelago
... 6.2 Limitations One limiting factor of this study is the azimuthally non-uniform distribution of local stations due to a lack of ocean-bottom seis- mometers around the Azores islands. The seismic modelling is limited in ...
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Performance test of an automated moment tensor determination system for the future “Tokai” earthquake
... It was initially surprising that for Groups 2 and 3, we could get better solutions than those in the unilateral homogeneous slip case. In retrospect this is due to the relatively short pulse width due to the concentrated ...
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Full waveform moment tensor inversion by reciprocal finite difference Green’s function
... the moment tensor inversions we need at least five Green’s functions (under the commonly applied condition trace ( M i j ) = 0 ) for each source-station ...
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Relative Location Analysis and Moment Tensor Inversion for the 2012 Gulf of Maine Earthquake Swarm
... the moment tensor inversion method of Dreger et ...seismic moment tensor ...double-couple moment tensor and a secondary compensated ...
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What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion
... the moment tensor. From this figure, we see that the recovered moment tensor is very similar to the true moment tensor, indicating that our method is indeed producing the correct ...
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Automatically Generated Moment Tensor Solutions for Southern California: Robustness of the M w Magnitude Scale and Style of Faulting
... Aftershock Sequences The aftershock sequence of Hector Mine included a large number of events within a few hours of the mainshock. These were assigned M L solutions with a wide variation in magnitude, most below M L 5. ...
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Centroid moment tensor analysis of the 2011 off the Pacific coast of Tohoku Earthquake and its larger foreshocks and aftershocks
... of moment, is shifted approxi- mately 70 s after the hypocentral time, indicating a compact moment-rate ...of moment is located ∼ 110 km SE and up dip of the epicenter. The moment ...
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Downhole microseismic monitoring of hydraulic fracturing: a full-waveform approach for complete moment tensor inversion and stress estimation
... strike, isotropic component and stress drop can be reliably derived from this full waveform analysis approach assuming a certain source model. Synthet- ic tests also indicate that additive Gaussian noises do not pose ...
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Full-waveform Based Complete Moment Tensor Inversion and Stress Estimation from Downhole Microseismic Data for Hydrofracture Monitoring
... seismic moment used to generate synthetics and the estimated seismic moment by full moment tensor ...seismic moment values agree well with the true seismic moment ...the ...
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Frequency Time Analysis (FTAN) and Moment Tensor Inversion Solutions from Short Period Surface Waves in Cameroon (Central Africa)
... The moment tensor M can be used to describe an in- stant point source. A double couple instant point source at a depth h, can be given by the following: double couple depth, its focal mechanism which is ...
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Near field tsunami forecast system based on near real time seismic moment tensor estimation in the regions of Indonesia, the Philippines, and Chile
... the moment tensor with M w can facilitate more reliable tsunami forecasts ...centroid moment ten- sor (CMT) have been installed by the Pacific Tsunami Warning Center (PTWC) ...
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1 The magnetic moment tensor
... Our goal here is to develop a set of moments to describe the magnetic field due to steady currents as we did for the electric field in sphermult notes and J Ch 4. Because there are no magnetic monopoles, the dominant ...
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Toward automated directivity estimates in earthquake moment tensor inversion
... directivity moment tensor (DMT) inversion method to estimate earthquake rupture properties directly through waveform fitting without needing to individually estimate apparent source parameters ...in ...
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Automatic Regional Moment Tensor Inversion in the European-Mediterranean Region
... A C K N O W L E D G M E N T S We thank Daniel Stich and an anonymous reviewer for their con- structive comments. We thank Suzan van der Lee and Yuan Gao for providing modified moment tensor analysis codes. ...
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Hierarchical Bayesian Inversion for the Point Source Moment Tensor: Method and Applications
... chapter, moment tensor inversion using seismic wave- forms can be utilised to examine explosive sources and distinguish them from natu- rally occurring earthquakes by the size of the double–couple ...
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Microseismic Full Waveform Modeling in Anisotropic Media with Moment Tensor Implementation
... 11 Comparison of travel-times and peak amplitudes of the direct fast S-wave (S-wave in the isotropic case) for three modeling examples. The figure description is analogous to figure 8[r] ...
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Point source moment tensor inversion through a Bayesian hierarchical model
... Characterization of seismic sources is an important aspect of seismology. Parameter uncer- tainties in such inversions are essential for estimating solution robustness, but are rarely available. We have developed a ...
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Spatial distribution of centroid moment tensor solutions for the 2004 off Kii peninsula earthquakes
... centroid moment tensors of two main shocks with moment magnitudes greater than 7 and inter- mediate size aftershocks by the centroid moment tensor in- version approach using the high-dense ...
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Moment tensor analysis of near-field broadband waveforms observed at Aso Volcano, Japan
... b Department of Earth and Planetary Sciences, Faculty of Sciences, Tokyo Institute of Technology, O-Okayama, Meguro-ku, Tokyo, Japan Received 31 August 1998; received in revised form 27 February 1999; accepted 1 August ...
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Spatial distribution for moment tensor solutions of the 2003 Tokachi oki earthquake (MJMA = 8 0) and aftershocks
... Y. ITO et al.: SPATIAL DISTRIBUTION FOR MOMENT TNSOR SOLUTIONS OF THE 2003 TOKACHI-OKI EARTHQUAKE 303 Fig. 2. The focal mechanisms distribution of aftershocks. Red, yellow and light blue indicate the TH-type, ...
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