Results 61 to 70 of about 27,306 (237)
Geochemistry, Geophysics, GeosystemsSeismic anisotropy is observed in the lowermost few hundred kilometers of the mantle. This anisotropy likely signifies strong deformation, possibly caused by mantle flow interacting with the edges of Large Low‐Shear‐Velocity Provinces (LLSVPs) or by the ...
Poulami Roy +3 more
doaj +1 more source
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 +2 more
doaj +1 more source
Inversion for Anisotropic Velocity Parameter [PDF]
, 1997 The problem under study concerns the robust computation of a certain parameter of anisotropy from observed travel-times of a seismic shear wave propagating through a geological medium. We have obtained an exact mathematical description of a geoseismic
Lamoureux, M.
core
CAN-HK : An a priori crustal model for the Canadian Shield [PDF]
, 2015 ACKNOWLEDGMENTS The United Kingdom component of the Hudson Bay Lithospheric Experiment (HuBLE) was supported by the Natural Environment Research Council (NERC) Grant Number NE/F007337/1, with financial and logistical support from the Geological Survey of
Bastow, I.D. +5 more
core +3 more sources
Terra Nova, EarlyView.ABSTRACT We present novel 3D subsidence data enabling vertical movements' quantification during the early formation of the Pyrenean retro‐wedge. From Cenomanian to Turonian times, subsidence is relatively low (~26 ± 10 m/Myr), corresponding to a brief 10 Myr thermal re‐equilibration of the European lithosphere following the hyperextended rift episode ...
Benoit Issautier +5 more
wiley +1 more source
Seismic Anisotropy Within an Active Fluid Flow Structure: Scanner Pockmark, North Sea
Frontiers in Earth Science, 2021 Understanding sub-seabed fluid flow mechanisms is important for determining their significance for ocean chemistry and to define fluid pathways above sub-seafloor CO2 storage reservoirs.
G. Bayrakci +11 more
doaj +1 more source
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
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
Anisotropic structure of the Australian continent
Frontiers in Earth Science, 2023 The Australian continent preserves some of the oldest lithosphere on Earth in the Yilgarn, Pilbara, and Gawler Cratons. In this study we present shear wave splitting and Ps receiver function results at long running stations across the continent.
Andrew Birkey +2 more
doaj +1 more source
Seismic anisotropy as a constraint on composition in the lower crust [PDF]
, 2013 Our current interpretation of the composition of the middle and lower crust comes mainly from seismic observations, yet it remains a challenge to link seismic observations directly to composition.
Brownlee, Sarah J. +4 more
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