A deep seismic sounding investigation of lithospheric heterogeneity and anisotropy beneath the Iberian Peninsula
نویسندگان
چکیده
منابع مشابه
Seismic anisotropy and velocity structure beneath the southern half of the Iberian Peninsula
Travel times of 11,612 Pn arrivals collected from 7675 earthquakes are inverted to image the uppermost mantle velocity and anisotropy structure beneath the southern half of the Iberian Peninsula and surrounding regions. Pn phases are routinely identified and picked for epicentral distances from 200 to 1200 km. The method used in this study allows simultaneous imaging of variations of Pn velocit...
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The Zagros collision zone is known as an active tectonic zone that represents the tectonic boundary between the Eurasian and Arabian plates. A popular strategy for gaining insight into the upper mantle processes is to examine the splitting of seismic shear waves and interpret them in terms of upper mantle anisotropy and deformation. Core phases SK(K)S from over 278 earthquakes (MW ≥ ...
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Seismic anisotropy beneath Ruapehu volcano: a possible eruption forecasting tool.
The orientation of crustal seismic anisotropy changed at least twice by up to 80 degrees because of volcanic eruptions at Ruapehu Volcano, New Zealand. These changes provide the basis for a new monitoring technique and possibly for future midterm eruption forecasting at volcanoes. The fast anisotropic direction was measured during three seismometer deployments in 1994, 1998, and 2002, providing...
متن کاملSignificant seismic anisotropy beneath the southern Lhasa Terrane, Tibetan Plateau
[1] Shear wave splitting measurements using teleseismic PKS, SKKS, and SKS phases recorded by station LSA on the southern part of the Lhasa Terrane of the Tibetan Plateau reveal significant azimuthal anisotropy with a splitting time of up to 1.5 s, a conclusion that is contradictory to previous studies which suggested isotropy or weak anisotropy. In addition, systematic variations of the splitt...
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ژورنال
عنوان ژورنال: Tectonophysics
سال: 1993
ISSN: 0040-1951
DOI: 10.1016/0040-1951(93)90026-g