Seismic Anisotropy and Its Impact on Imaging the Shallow Alpine Fault: An Experimental and Modeling Perspective
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Geophysical Research"
DOI: 10.1029/2019jb019029
Abstract: The transpressional Alpine Fault in New Zealand has created a thick shear zone with associated highly anisotropic rocks. Low seismic velocity zones (LVZ) and high seismic reflectivity are recorded in the Alpine Fault Zone, but… read more here.
Keywords: fault; fault zone; seismic anisotropy; alpine fault ... See more keywords
Measurement of Viscoelastic Material Model Parameters Using Fractional Derivative Group Shear Wave Speeds in Simulation and Phantom Data
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2019.2944126
Abstract: While ultrasound shear wave elastography originally focused on tissue stiffness under the assumption of elasticity, recent work has investigated the higher order, viscoelastic properties of the tissue. This article presents a method to use group… read more here.
Keywords: shear wave; model; wave speeds; material model ... See more keywords
High mantle seismic P-wave speeds as a signature for gravitational spreading of superplumes
Sign Up to like & getrecommendations! Published in 2020 at "Science Advances"
DOI: 10.1126/sciadv.aba7118
Abstract: High mantle P-wave speeds beneath oceanic plateaus define a new strain fabric indicative of flow in the head of a superplume. New passive- and active-source seismic experiments reveal unusually high mantle P-wave speeds that extend… read more here.
Keywords: speeds signature; high mantle; mantle seismic; seismic wave ... See more keywords
Pressure and temperature dependence of acoustic wave speeds in bitumen-saturated carbonates: Implications for seismic monitoring of the Grosmont Formation
Sign Up to like & getrecommendations! Published in 2017 at "Geophysics"
DOI: 10.1190/geo2016-0667.1
Abstract: ABSTRACTRecent time-lapse seismic observations in carbonate reservoirs subject to steam-assisted enhanced oil recovery display substantial changes in seismic reflectivity due to the combined effects of saturation, pressure, and temperature. Understanding these field seismic observations requires… read more here.
Keywords: wave speeds; speeds bitumen; pressure temperature; pressure ... See more keywords
Exploration of Wave Development during Yarn Transverse Impact
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DOI: 10.3390/fib5020017
Abstract: Single yarns have been impacted in a transverse fashion so as to probe the characteristics of resulting wave development. Longitudinal wave speeds were tracked in efforts to directly measure the yarn tensile stiffness, resulting in… read more here.
Keywords: yarn; velocity; wave; wave development ... See more keywords
Seismic Wave Speeds Derived from Nuclear Resonant Inelastic X-ray Scattering for Comparison with Seismological Observations
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DOI: 10.3390/min10040331
Abstract: Nuclear resonant inelastic X-ray scattering (NRIXS) experiments have been applied to Earth materials, and the Debye speed is often related to the material’s seismic wave speeds. However, for anisotropic samples, the Debye speed extracted from… read more here.
Keywords: seismic wave; ray; debye speed; wave speeds ... See more keywords