نتایج جستجو برای: shear wave velocity

تعداد نتایج: 398324  

2013
Kevin S Heffernan Wesley K Lefferts Ari G Kasprowicz Brendan J Tarzia Dick H Thijssen Tom D Brutsaert

Exposure of the arterial wall to retrograde shear acutely leads to endothelial dysfunction and chronically contributes to a proatherogenic vascular phenotype. Arterial stiffness and increased pressure from wave reflections are known arbiters of blood flow in the systemic circulation and each related to atherosclerosis. Using distal external compression of the calf to increase upstream retrograd...

Journal: :Science 2009
Cecily J Wolfe Sean C Solomon Gabi Laske John A Collins Robert S Detrick John A Orcutt David Bercovici Erik H Hauri

Defining the mantle structure that lies beneath hot spots is important for revealing their depth of origin. Three-dimensional images of shear-wave velocity beneath the Hawaiian Islands, obtained from a network of sea-floor and land seismometers, show an upper-mantle low-velocity anomaly that is elongated in the direction of the island chain and surrounded by a parabola-shaped high-velocity anom...

Journal: :AIJ Journal of Technology and Design 2019

Journal: :Annales de Chimie - Science des Matériaux 2020

2009
T. Abreu F. Sancho P. Silva

As waves travel and shoal towards a beach, their surface elevation becomes peaky (sharp crests) and asymmetric relative to the vertical. Within a wave period, the corresponding orbital velocity near the bottom shows a similar (time) variation and it is recognized that these nonlinearities are responsible for sediment transport. The resulting wave-induced bottom shear stresses are required for m...

2016
Amanda M. Thomas Gregory C. Beroza David R. Shelly

Low-frequency earthquakes (LFEs) are small repeating earthquakes that occur in conjunction with deep slow slip. Like typical earthquakes, LFEs are thought to represent shear slip on crustal faults, but when compared to earthquakes of the same magnitude, LFEs are depleted in high-frequency content and have lower corner frequencies, implying longer duration. Here we exploit this difference to est...

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