Results 31 to 40 of about 219,591 (307)

Alfvén-Wave Instability of Current Sheets in Force-Free Collisionless Plasmas [PDF]

, 1999
If the current sheet between adjacent twisted magnetic flux tubes is sufficiently thin, the electron flow velocity becomes comparable to the Alfvén velocity and can destabilize collisionless Alfvén waves.
Bellan, P. M.
core   +1 more source

Estimating the Shear-Wave Velocities of Shallow Sediments in the Yellow Sea Using Ocean-Bottom-Seismometer Multicomponent Scholte-Wave Data

Frontiers in Earth Science, 2022
Scholte-wave dispersion analysis is effective at imaging the relatively low shear-wave velocity of shallow marine sediments in marginal seas. The combination of a four-component ocean-bottom-seismometer (OBS) and a towed air-gun source can economically ...
Yuan Wang, Yuan Wang, Qingyu You, Qingyu You, Qingyu You, Tianyao Hao, Tianyao Hao, Tianyao Hao, Tianyao Hao   +8 more
doaj   +1 more source

Characteristics of Langmuir Turbulence in the Ocean Mixed Layer [PDF]

, 2009
This study uses large-eddy simulation (LES) to investigate the characteristics of Langmuir turbulence through the turbulent kinetic energy (TKE) budget. Based on an analysis of the TKE budget a velocity scale for Langmuir turbulence is proposed.
Belcher, Stephen E., Grant, Alan L. M.
core   +1 more source

Development a Statistical Relationship between Compressional Wave Velocity and Petrophysical Properties from Logs Data for JERIBE Formation ASMARI Reservoir in FAUQI Oil Field

Iraqi Journal of Chemical and Petroleum Engineering, 2021
The Compressional-wave (Vp) data are useful for reservoir exploration, drilling operations, stimulation, hydraulic fracturing employment, and development plans for a specific reservoir.
Qahtan Adnan Abdul Aziz, Hassan A. Abdul Hussein   +1 more
doaj   +1 more source

Fire-hose instability of inhomogeneous plasma flows with heat fluxes

, 2020
We study the effects of heat flows and velocity shear on the parallel firehose instability in weakly collisional plasma flow. For this purpose we apply an anisotropic 16-moments MHD fluid closure model that takes into account the pressure and temperature
Dzhalilov, N. S., Poedts, S., Shergelashvili, B. M., Tevzadze, A. G., Uchava, E. S.   +4 more
core   +1 more source

Anomalous acoustic reflection on a sliding interface or a shear band [PDF]

, 2003
We study the reflection of an acoustic plane wave from a steadily sliding planar interface with velocity strengthening friction or a shear band in a confined granular medium.
B. Velický, C. Caroli, C. Marone, E.L. Chez, F. Heslot, F. Pignon, G.G. Adams, J. Desrues, J.-C. Géminard, J.H. Dieterich, J.R. Rice, J.T.R. Rice, K. Ranjith, L. Bureau, M. Nosonovsky, M. Nosonovsky, M.L. Blanpied, M.L. Falk, P. Berthoud, P. Coussot, T. Baumberger, T. Baumberger, X. Jia   +22 more
core   +1 more source

Establishing normal values for shear-Wave elastography of the renal cortex in healthy adults

Journal of Medical Ultrasound, 2018
Background: Shear-wave elastography of the kidney has emerged as a potential clinical application of this novel imaging tool. However, normal velocity values for shear-wave elastography involving the cortex of healthy kidneys have not been definitively ...
Ranjit S Sandhu, James Shin, Natasha E Wehrli, Jing Gao   +3 more
doaj   +1 more source

Parameter Identification for Ultrasound Shear Wave Elastography Simulation

Current Directions in Biomedical Engineering, 2021
Elasticity of soft tissue is a valuable information to physicians in treatment and diagnosis of diseases. The elastic properties of tissue can be estimated with ultrasound (US) shear wave imaging (SWEI).
Neidhardt M., Ohlsen J., Hoffmann N., Schlaefer A.   +3 more
doaj   +1 more source

CPT-Based Shear Wave Velocity Correlation Model for Soft Soils with Graphical Assessment

Applied Sciences
Shear wave velocity is a key parameter for evaluating the mechanical properties of soils, and direct measurement is technically demanding and costly. Realizing rapid prediction by establishing correlations between other parameters and shear wave velocity
Huihao Chen, Zhongkai Huang, Qiang Huang, Qiang Wang   +3 more
doaj   +1 more source

Uncertainty in Shear-Wave Velocity Profiles

Journal of Seismology, 2022
AbstractThis paper considers the uncertainty in the shear wave velocity (Vs) of soil and rock profiles for use in earthquake site response calculations. This uncertainty is an important contributor to uncertainty in site response, which in turn is an important contributor to uncertainty in earthquake ground motions and in seismic hazard.
openaire   +1 more source