the khorasan region is one of the active seismic zones in iranian plateau, which is located between central iran and kopet-dagh zones. we study the crustal thickness (h) and vp/vs ratio (k) in mashhad, capital of razavi khorasan province by the receiver function method. this study uses teleseismic events recorded by an array of three broadband stations of khorasan seismic network, earthquake re...

[1] Isotropic and anisotropic seismic structures across the Northern Apennines (Italy) subduction zone are imaged using a new method for the analysis of teleseismic receiver functions (RFs). More than 13,000 P‐wave coda of teleseismic records from the 2003–2007 Retreating‐Trench, Extension, and Accretion Tectonics (RETREAT) experiment are used to provide new insights into a peculiar subduction ...

Abstract Modelling the response of seismic wavefields to sharp lateral variations in crustal discontinuities is essential for tomography application and path effects correction earthquake source characterization. This particularly relevant when cross back-arc oceanic basins, i.e. mixed continental-oceanic settings. High-frequency (>0.05 Hz) waves resonate get absorbed across these settings d...

Most analyses of strong motion attenuation assume simple whole-space type geometrical spreading, namely (1 /R ) or its modified form e kR/R. HOWever, broadband data presently becoming available suggests a more complex behavior with substantial crustal effects. Events such as the Sierra Madre event, M = 5.8, triggered the strong motion channels at all of the TERRAscope stations allowing for 0.01...

The crust and upper mantle beneath the New England Appalachians exhibit a large offset of Moho across boundary between Laurentia accreted terranes several dipping discontinuities, which reflect Paleozoic or younger tectonic movements. We apply scattered wavefield migration to SEISConn array deployed northern Connecticut obtain insights not previously available from receiver function studies. re...

SUMMARY We present PRISM3D, a 3-D reference seismic model of P- and S-wave velocities for Iberia adjacent areas. PRISM3D results from the combination most up-to-date earth models available region. It extends horizontally 15°W to 5°E in longitude, 34°N 46°N latitude vertically 3.5 km above 200 below sea level, is modelled on regular grid with 10 0.5 node spacing horizontal vertical directions, r...

Using seismic data from regional earthquakes in Tibet recorded by the Hi-CLIMB experiment, Pn attributes are used to constrain the velocity gradient and attenuation structure of the Tibetan lithosphere under the Hi-CLIMB array. Numerical modeling is performed using the spectral-element method (SEM) for laterally varying upper-mantle velocity and attenuation, and the seismic attributes considere...