Results 41 to 50 of about 27,306 (237)

Understanding seismic anisotropy in the Rotondo granite: investigating stress as a potential source [PDF]

open access: yesSolid Earth
The hypothesis of stress-induced seismic anisotropy was tested in the Bedretto Lab, a deep underground rock laboratory in the Swiss Alps. Several comprehensive cross-hole seismic surveys were acquired to analyze the directional dependency of seismic-wave
K. Behnen   +7 more
doaj   +1 more source

Petroelastic simulation as a method for analysing the anisotropy of elastic properties on the scale of seismic surveys

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2022
Introduction. Reservoirs composed of thin layers with different elastic properties exhibit the anisotropy of elastic properties. Anisotropic environments are studied using special seismic positioning systems that require large financial and time ...
M. K. Savoyskaya, I. O. Bayuk
doaj   +1 more source

Calculation of acoustic parameters by a filter-correlation method [PDF]

open access: yes, 1993
This paper presents the filter correlation method, a technique for extracting consistent and accurate estimates of attenuation parameters from acoustic waveform data.
Courtney, Robert C., Mayer, Larry A.
core   +2 more sources

Azimuth-, angle- and frequency-dependent seismic velocities of cracked rocks due to squirt flow [PDF]

open access: yesSolid Earth, 2020
Understanding the properties of cracked rocks is of great importance in scenarios involving CO2 geological sequestration, nuclear waste disposal, geothermal energy, and hydrocarbon exploration and production.
Y. Alkhimenkov   +5 more
doaj   +1 more source

Seismic anisotropy under Zagros foreland from SKS splitting observations [PDF]

open access: yesSolid Earth
We present SK[K]S splitting measurements from 18 newly deployed seismic stations in the foreland of the Zagros collision zone, providing new insights into asthenospheric flow and lithospheric deformation associated with the Arabian-Eurasian continental ...
K. Motaghi   +4 more
doaj   +1 more source

Seismic anisotropy inferred from direct S-wave-derived splitting measurements and its geodynamic implications beneath southeastern Tibetan Plateau [PDF]

open access: yesSolid Earth, 2017
The present study deals with detecting seismic anisotropy parameters beneath southeastern Tibet near Namcha Barwa Mountain using the splitting of direct S waves.
A. K. Tiwari   +3 more
doaj   +1 more source

Deriving micro- to macro-scale seismic velocities from ice-core c axis orientations [PDF]

open access: yesThe Cryosphere, 2018
One of the great challenges in glaciology is the ability to estimate the bulk ice anisotropy in ice sheets and glaciers, which is needed to improve our understanding of ice-sheet dynamics.
J. Kerch   +6 more
doaj   +1 more source

Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]

open access: yes, 2014
We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
BOLLINGER, Caroline   +5 more
core   +4 more sources

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

A multiphase seismic investigation of the shallow subduction zone, southern North Island, New Zealand [PDF]

open access: yes, 2001
The shallow structure of the Hikurangi margin, in particular the interface between the Australian Plate and the subducting Pacific Plate, is investigated using the traveltimes of direct and converted seismic phases from local earthquakes.
Aki   +38 more
core   +1 more source

Home - About - Disclaimer - Privacy