Results 71 to 80 of about 27,412 (233)
Estimating anisotropy parameters and traveltimes in the tau-p domain [PDF]
, 2002 The presence of anisotropy influences many aspects of seismic wave propagation and has therefore implications for conventional processing schemes. To estimate the anisotropy, we need both forward modelling and inversion tools. Exact forward modelling
Kendall, J.M., Van der Baan, M.
core +1 more source
Eos, Transactions American Geophysical Union, 1987 P wave anisotropy, the direction dependence of P wave velocities, is widely recognized to exist in the crust and upper mantle. The anisotropic effects of layered media, of aligned crystals in ductile rock, and of aligned cracks in brittle rock have been observed or have been speculated to yield information on earth structure and geomechanical processes.
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng +7 more
wiley +1 more source
Seismic Anisotropy Estimation Using a Downhole Microseismic Data Set in a Shale Gas Reservoir
Energies, 2023 Shale anisotropy has a significant impact on the data processing and interpretation of microseismic monitoring in shale gas reservoirs. A geology- and rock-physics-constrained approach to estimating shale anisotropy using down-hole microseismic data sets
Changpeng Yu, Yaling Zhu, Serge Shapiro
doaj +1 more source
The earth’s core: an approach from first principles [PDF]
, 2004 The Earth’s core is largely composed of iron (Fe), alloyed with less dense elements such as sulphur, silicon and/or oxygen. The phase relations and physical properties of both solid and liquid Fe-alloys are therefore of great geophysical importance. As
Alfè, D. +3 more
core +1 more source
Numerical Approaches for the Analysis of Glass Facades Under Seismic Loads
Earthquake Engineering and Resilience, EarlyView.Glass facades have gained more popularity due to their highly impacting esthetic and sustainable applications. However, their constitutive glass components are rather vulnerable and need proper analysis strategies to design them in efficient structural terms, especially against extreme loads, such as earthquakes.
Mir Zafarullah, Chiara Bedon
wiley +1 more source
Journal of Applied Crystallography, EarlyView.LamelODF is a MATLAB‐based toolbox aimed at simplifying the automated extraction of orientation distribution functions from 2D X‐ray diffraction data of lamellar minerals in transmission mode. It accommodates both laboratory and synchrotron data formats, providing an integrated pipeline from raw data to spatially resolved textural maps, enabling robust
Baptiste Dazas +5 more
wiley +1 more source
Upper Mantle Anisotropy and Flow Beneath the Pacific Ocean Revealed by Differential PS‐SKS Splitting
Geophysical Research Letters, 2023 Upper mantle anisotropy has been mapped beneath continents at high spatial resolution. Beneath the oceans, however, shear wave splitting constraints on upper mantle anisotropy are sparse, due to the paucity of seismic receivers. A technique that does not
Jonathan Wolf, Maureen D. Long
doaj +1 more source
Earth's Inner Core dynamics induced by the Lorentz force [PDF]
, 2015 Seismic studies indicate that the Earth's inner core has a complex structure and exhibits a strong elastic anisotropy with a cylindrical symmetry. Among the various models which have been proposed to explain this anisotropy, one class of models considers
Cardin, P. +3 more
core +4 more sources
Terra Nova, EarlyView.ABSTRACT In this study, we examine the relationship between Brune stress drop and fault slip where the stress drop is estimated using the Empirical Green's Function (EGF) method and slip distribution is derived from seismic and geodetic data inversion.
Calderoni Giovanna +2 more
wiley +1 more source