Results 51 to 60 of about 31,006 (289)

Influence of Error in Estimating Anisotropy Parameters on VTI Depth Imaging

International Journal of Geophysics, 2016
Thin layers in sedimentary rocks lead to seismic anisotropy which makes the wave velocity dependent on the propagation angle. This aspect causes errors in seismic imaging such as mispositioning of migrated events if anisotropy is not accounted for.
S. Y. Moussavi Alashloo, D. P. Ghosh, Y. Bashir, W. Y. Wan Ismail   +3 more
doaj   +1 more source

Sharp Changes of Crustal Seismic Anisotropy Across the Central Tanlu Fault Zone in East China

Geophysical Research Letters, 2023
Both seismic and geodetic data suggested that the ∼120‐km long Weifang segment of the Tanlu fault zone, a large‐scale active strike‐slip system at east China, is a seismic gap with no obvious along‐strike shear motion at surface.
Wenpei Miao, Fenglin Niu, Haichao Chen
doaj   +1 more source

Mid-mantle deformation inferred from seismic anisotropy [PDF]

, 2002
With time, convective processes in the Earth's mantle will tend to align crystals, grains and inclusions. This mantle fabric is detectable seismologically, as it produces an anisotropy in material properties—in particular, a directional dependence in ...
A Yeganeh-Haeri, AE Ringwood, AR Oganov, C Tong, CJ Wolfe, CP Meade, D Mainprice, DL Anderson, G Barruol, G Clitheroe, Guilhem Barruol, J-M Kendall, J-M Kendall, J-P Montagner, J-P Montagner, J.-Michael Kendall, James Wookey, JB Gaherty, JX Mitrovica, K Fischer, K Hirose, L Stixrude, LP Vinnik, LP Vinnik, MJ Fouch, MK Savage, NJ Kusznir, PG Silver, PG Silver, R Van der Hilst, S Karato, S Karato, S Widiyantoro, S Özalaybey, SH Kirby   +34 more
core   +4 more sources

Geophysical characterisation of the ocean–continent transition at magma-poor rifted margins [PDF]

, 2009
Geophysical characterisation of the ocean-continent transition (OCT) at magma-poor riftedmargins has focused primarily on the determination of P wave velocities using wide-angleseismic techniques. Such experiments have shown that the OCT is heterogeneous,
Minshull, Timothy A.
core   +1 more source

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

Solid 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, M. Hertrich, H. Maurer, A. Shakas, K. Bröker, C. Epiney, M. Blanch Jover, D. Giardini   +7 more
doaj   +1 more source

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

Известия 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

The Hudson Bay Lithospheric Experiment (HuBLE) : Insights into Precambrian Plate Tectonics and the Development of Mantle Keels [PDF]

, 2015
The UK component of HuBLE was supported by Natural Environment Research Council (NERC) grant NE/F007337/1, with financial and logistical support from the Geological Survey of Canada, Canada–Nunavut Geoscience Office, SEIS-UK (the seismic node of NERC ...
Bastow, I. D., Darbyshire, F. A., Eaton, D. W., Helffrich, G., Kendall, J.-M., Pawlak, A. E., Snyder, D. B., Thompson, D. A., Wookey, J.   +8 more
core   +2 more sources

Detecting Compaction Disequilibrium with Anisotropy of Magnetic Susceptibility [PDF]

, 2006
In clay-rich sediment, microstructures and macrostructures influence how sediments deform when under stress. When lithology is fairly constant, anisotropy of magnetic susceptibility (AMS) can be a simple technique for measuring the relative consolidation
Bennett, Booth, Borrero, Bray, Constable, Dorman, Driscoll, Dugan, Edwards, Eichhubl, Field, Fischer, Fisher, Fisher, Geiss, Hendy, Hext, Hill, Homa Lee, Housen, Hu, Jelinek, Karlin, Kawamura, Kayen, King, Kirschvink, Kodama, Kopf, Kumar, Kurt Schwehr, Lambe, Lee, Leslie, Leslie, Lisa Tauxe, Liu, Locat, Marks, Marsaglia, McCabe, Mello, Neal Driscoll, O'Leary, Oey, Pan, Reimers, Riedinger, Rowan, Schlee, Schock, Schwehr, Shaw, Snowball, Soutar, Spinelli, Stephenson, Tarduno, Tarling, Tauxe, Tauxe, Thunell, Ward, Warrick   +63 more
core   +3 more sources

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

Solid 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, A. Singh, T. Eken, C. Singh   +3 more
doaj   +1 more source

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

Solid 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, Y. Alkhimenkov, E. Caspari, S. Lissa, B. Quintal, B. Quintal   +5 more
doaj   +1 more source