Results 41 to 50 of about 3,095 (118)

Azimuthal anisotropy beneath north central Africa from shear wave splitting analyses

Geochemistry, Geophysics, Geosystems, 2015
This study represents the first multistation investigation of azimuthal anisotropy beneath the interior of north central Africa, including Libya and adjacent regions, using shear wave splitting (SWS) analysis.
Awad A. Lemnifi, Kelly H. Liu, Stephen S. Gao, Cory A. Reed, Ahmed A. Elsheikh, Youqiang Yu, Abdala A. Elmelade   +6 more
doaj   +1 more source

Mantle Structure and Flow Across the Continent‐Ocean Transition of the Eastern North American Margin: Anisotropic S‐Wave Tomography

Geochemistry, Geophysics, Geosystems, 2021
Little has been seismically imaged through the lithosphere and mantle at rifted margins across the continent‐ocean transition. A 2014–2015 community seismic experiment deployed broadband seismic instruments across the shoreline of the eastern North ...
Brennan R. Brunsvik, Zachary C. Eilon, Colton Lynner   +2 more
doaj   +1 more source

Shear Wave Splitting and Mantle Flow in Mexico: What Have we Learned?

Geofísica Internacional, 2017
El presente artículo es un resumen y análisis de los estudios de partición de ondas transversales (shear wave splitting) para el manto superior que se han realizado en México durante la última década.
Raúl Valenzuela Wong, Gerardo León Soto   +1 more
doaj   +1 more source

SKS-wave splitting and upper mantle structure: results in the Southern Apennines

Annals of Geophysics, 1998
Shear wave splitting measures at six temporary stations in the Southern Apennines are computed analyzing fifteen events recorded during the spring and summer 1996, with magnitude greater than 5.8.
L. Margheriti
doaj   +1 more source

Variations of shear-wave splitting parameters in the source region of the 2023 Türkiye doublet earthquakesKey points

Earthquake Science
In this study, the shear-wave splitting parameters of local seismic events from the source regions of the 2023 Türkiye MW7.7 and MW7.6 doublet earthquakes (event 1 and event 2, respectively) were measured from June 1, 2022, to April 25, 2023, and their ...
Xuelai Cao, Lijun Chang
doaj   +1 more source

Shear-Wave Splitting in a Critical Crust: the Next Step Biréfringence des ondes transversales dans les croûtes critiques : la prochaine étape

Oil & Gas Science and Technology, 2006
Arguably, shear-wave splitting displaying azimuthal anisotropy has not lived up to its initial promise of opening a new window for understanding cracks and stress in the crust.
Crampin S.
doaj   +1 more source

Feasibility of Deep Learning in Shear Wave Splitting analysis using Synthetic-Data Training and Waveform Deconvolution

Seismica
Teleseismic shear-wave splitting analyses are often performed by reversing the splitting process through the application of frequency- or time-domain operations aimed at minimizing the transverse-component energy of waveforms.
Megha Chakraborty, Georg Rümpker, Wei Li, Johannes Faber, Nishtha Srivastava, Frederik Link   +5 more
doaj   +1 more source

Shear Wave Splitting and Polarization in Anisotropic Fluid-Infiltrating Porous Media: A Numerical Study. [PDF]

Materials (Basel), 2020
De Marchi N, Sun W, Salomoni V.
europepmc   +1 more source

Anisotropy and Energy Evolution Characteristics of Shales: A Case Study of the Longmaxi Formation in Southern Sichuan Basin, China

Geofluids
To obtain the influence of anisotropy and energy evolution characteristics on wellbore stability, the acoustic and mechanical anisotropy characteristics of shales are studied through various experiments, including scanning electron microscopy, ultrasonic
Liu Xiangjun, Zhuang Dalin, Xiong Jian, Zhou Yishan, Liu Junjie, Deng Chong, Liang Lixi, Ding Yi, Jian Xuemei   +8 more
doaj   +1 more source

Shear-wave attenuation anisotropy: a new constraint on mantle melt near the Main Ethiopian Rift

Seismica
The behaviour of fluids in preferentially aligned fractures plays an important role in a range of dynamic processes within the Earth. In the near-surface, understanding systems of fluid-filled fractures is crucial for applications such as geothermal ...
Joseph Asplet, James Wookey, Micheal Kendall, Mark Chapman, Ritima Das   +4 more
doaj   +1 more source