We measure the plane wavefront incidence azimuth for teleseismic P at large-aperture ( 50 km) broadband arrays. The incidence azimuth is determined by crosscorrelation of the P arrivals on the vertical component seismograms filtered in successive frequency bands. The periods considered range from 10 to 35 sec. At the Anza array in southern California, the plane wave direction is deflected from ...

Abstract. In an effort to improve our understanding of the seismic character crust beneath southeast Australia and how it relates tectonic evolution region, we analyse teleseismic earthquakes recorded by 24 temporary 8 permanent broadband stations using receiver function method. Due proximity Bass Strait, only 13 these yielded usable functions, whereas seven produced functions for subsequent an...

Phases that arrive near the direct SV phase, including Sp (converted at the base of the Moho), SsPmP, and shear-coupled PL (SPL) waves, collectively sample the Earth’s crust and upper mantle at oblique angles and therefore have the potential to produce an accurate lateral average of structural properties than teleseismic P waves. SPL waves essentially mimic the propagation characteristics of re...

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...

iran is located in a roughly triangular deforming region, consisting of relatively undeformed shield areas to the southwest (arabia) and northeast and the more recently deformed, though currently inactive, southwest afghanistan block in the east. the current geological and tectonic setting of iran is due to the ongoing convergence between the arabian and eurasian plates, which resulted in the f...