Results 221 to 230 of about 2,090 (259)

Average shear wave velocity models of the crustal structure at Mt. Vesuvius

Physics of the Earth and Planetary Interiors, 2005
Some Mt. Vesuvius events recorded in 1989–1999 period at Osservatorio Vesuviano (OSVE)-INGV stations have been processed by means of frequency time analysis (FTAN) method. The group velocities of the fundamental mode of Rayleigh- wave have been extracted in the period range 0.3–2 s.
NATALE M., NUNZIATA C., PANZA, GIULIANO
openaire   +3 more sources

Ophiolites, seismic velocities and oceanic crustal structure

Tectonophysics, 1978
Abstract Seismic velocities have been measured to pressures of 10 kbars for 96 cores of 36 rocks collected from ophiolite complexes. Average densities ( ρ ), compressional wave velocities (V p ), shear wave velocities (V s ) and Poisson's ratios (σ) at 1 kbar for major rock types are as follows: A A 1 . Rock ρ V p V s σ
openaire   +1 more source

Crustal velocity structure of the Omineca Belt, southeastern Canadian Cordillera

Journal of Geophysical Research: Solid Earth, 1994
Travel time inversion and amplitude modeling of a 350‐km Lithoprobe seismic refraction/wide‐angle reflection profile determined the velocity structure of the crust and upper mantle along strike in the Omineca Belt of the Canadian Cordillera. The upper crust to 12–18 km depth has velocities from 5.6 to 6.2 km s−1, and two shear zones, the Monashee ...
E. R. Kanasewich, M. J. A. Burianyk, R. M. Ellis, R. M. Clowes, D. J. White, T. Côté, D. A. Forsyth, J. H. Luetgert, G. D. Spence   +8 more
openaire   +1 more source

Crustal velocity structure in the southern Coast Belt, British Columbia

Canadian Journal of Earth Sciences, 1993
We applied an iterative combination of two-dimensional traveltime inversion and amplitude forward modelling to seismic refraction data along a 350 km along-strike profile in the Coast Belt of the southern Canadian Cordillera to determine crust and upper mantle P-wave velocity structure. The crustal model features a thin (0.5–3.0 km) near-surface layer
D. M. O'Leary, R. M. Clowes, R. M. Ellis
openaire   +1 more source

Crustal structure in Tibet: High seismic velocity in the lower crust

Journal of Geophysical Research: Solid Earth, 1986
A least squares procedure is used to extract pure path Tibetan group velocities in the period range 8–100 s from fundamental mode Rayleigh and Love waves recorded along 50 mixed paths. The crustal model derived from these dispersion data reveals that the lower half of the very thick (74 ± 10 km) Tibetan crust has a shear velocity similar to those found
Kin‐Yip Chun, Thomas V. McEvilly
openaire   +1 more source

Crustal imaging of the seismic velocity structure in the Emilia region

The 2012 Emilia seismic sequence in the central sector of the Ferrara arc included the 20 May (Mw 6.1) and 29 May 2012 (Mw 6.0) mainshocks, followed by thousands of aftershocks, and ruptured thrust faults belonging to the Ferrara and Mirandola systems buried beneath the Po Plain (Carannante et al., 2015).
Majed Abyat, Debora Presti, Barbara Orecchio, Silvia Scolaro, Cristina Totaro   +4 more
openaire   +2 more sources

Crustal velocity structure of western Dharwar Craton, South India

Journal of Geodynamics, 2001
A deep seismic sounding (DSS) experiment was carried out across the Indian shield in 1972–1975. Kaila et al. (Kaila, K.L., Roy Chowdhury, K., Reddy, P.R., Krishna, V.G., Hari Narain, Subbotin, S.I., Sollogub, V.B., Chekunov, A.V., Kharetchko, G.E., Lazarenko, M.A., Ilchenko T.V., 1979.
D. Sarkar, K. Chandrakala, P. Padmavathi Devi, A.R. Sridhar, K. Sain, P.R. Reddy   +5 more
openaire   +1 more source

The Crustal Structure of Western Shandong and the High‐Velocity Body in the Crust

Chinese Journal of Geophysics, 2007
AbstractThe crustal velocity structure of western Shandong is revealed by a 320 km long DSS profile from Liaocheng to Lianyungang. In this area, the upper crust has a two‐layer structure with a total thickness of 18~20 km and a velocity of 5.4~6.2 km/s; the lower crust is also divided into two layers with a total thickness of 13~15 km and a velocity of
openaire   +1 more source

Crustal velocity structure in the southern edge of the Central Alborz (Iran)

Journal of Geodynamics, 2010
Abstract Inversion of local earthquake travel times and joint inversion of receiver functions and Rayleigh wave group velocity measurements were used to derive a simple model for the velocity crustal structure beneath the southern edge of the Central Alborz (Iran), including the seismically active area around the megacity of Tehran.
Abbassi, A., Nasrabadi, A., Tatar, M., Yaminifard, F., Abbassi, M. R., Hatzfeld, Denis, Priestley, Keith   +6 more
openaire   +3 more sources

Crustal velocity structure from SAREX, the Southern Alberta Refraction Experiment

Canadian Journal of Earth Sciences, 2002
Lithoprobe's Southern Alberta Refraction Experiment, SAREX, extends 800 km from east-central Alberta to central Montana. It was designed to investigate crustal velocity structure of the Archean domains underlying the Western Canada Sedimentary Basin.
Ron M Clowes, Michael JA Burianyk, Andrew R Gorman, Ernest R Kanasewich   +3 more
openaire   +1 more source