The deviatoric and isotropic source components for 17 explosions at the Nevada Test Site, as well as 12 earthquakes and 3 collapses in the surrounding region of the western US, are calculated using a regional time-domain full waveform inversion for the complete moment tensor. The events separate into specific populations according to their deviation from a pure double-couple and ratio of isotro...

Modeling of long-period body waves of the Ms = 7.3 Borah Peak, Idaho, earthquake suggests that the earthquake was a simple rupture that nucleated at a depth of about 16 km and propagated unilaterally northwestward toward the surface. The seismic moment tensor obtained from the inversion of teleseismic body wave amplitude data agrees well with the fault plane solution obtained from short-period ...

A volcanic earthquake with Mw 5:6 occurred beneath the Bárdarbunga caldera in Iceland on 29 September 1996. This earthquake is one of a decade-long sequence ofM 5 events at Bárdarbunga with non-double-couple mechanisms in the Global Centroid Moment Tensor catalog. Fortunately, it was recorded well by the regional-scale Iceland Hotspot Project seismic experiment. We investigated the event with a...

Hsin-Hua Huang,1,2,3 Naofumi Aso2,4 and Victor C. Tsai2 1Institute of Earth Science, Academia Sinica, Taipei 115, Taiwan. E-mail: [email protected] 2Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125, USA 3Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, USA 4Department of Earth and Planetary Science, The University of T...

Understanding deep rocks' mechanical properties and failure evolution is crucial for efficient resource development. This study investigates the of tight sandstone analyzes its acoustic emission (AE) characteristics using a combined discrete element model moment tensor inversion. The AE activity during loading categorized into three stages: crack initiation, stable propagation, unstable propaga...

Seismic moment tensor and finite-source analyses are performed for the 21 February 2008 Wells, Nevada earthquake. Using complete, intermediate period (10-50s), regional waveforms, and assuming the U. S. Geological Survey (USGS)-reported hypocenter, the best-fit moment tensor solution is a normal mechanism that strikes approximately northeast-southwest, consistent with the trend of Basin and Ran...

one of the methods for the determination of focal mechanisms of earthquakes is the linear inversion of moment tensor in time domain. that method is used here for determining of the focal mechanisms the darbe astaneh silakhor earthquake of 31 march 2006 and two of its foreshocks and six aftershocks with local magnitude more than 4. the data of six broadband stations of the international institut...