搜索结果: 1-15 共查到“地球物理学 shear”相关记录19条 . 查询时间(0.034 秒)
Shear-wave velocity structure at Mt. Etna from inversion of Rayleigh-wave dispersion patterns (2 s < T < 20 s)
Mount Etna Rayleigh-wave dispersion S-wave velocity modeL Non-linear inversion Triangle method
2015/8/28
In the present study, we investigated the dispersion characteristics of medium-to-long period Rayleigh waves (2 s < T < 20 s) using both single-station techniques (multiple-filter analysis, and phase-...
Temporal variation of shear-wave splitting parameters before and after the 2008 Movri Mountain earthquake in northwest Peloponnese (Greece)
splitting parameters northwest Peloponnese
2015/8/26
On June 8, 2008, at 12:25 GMT, a Mw 6.4 earthquake, the Movri Mountain earthquake, occurred in the area of northwest Peloponnese, western Greece. The epicenter was located in the municipality of Movri...
Empirical relationships of shear wave velocity,SPT-N value and vertical effective stress for different soils in Mashhad,Iran
Shear wave velocity Vertical effective stress Standard penetration test Downhole test, Empirical relations Mashhad Iran
2015/8/14
Shear wave velocity, Vs, is one of the important input parameters in seismic response analysis of the ground. Various methods have been examined to measure the soil Vs directly. Direct measurement of ...
Mantle lithosphere transition from the East European Craton to the Variscan Bohemian Massif imaged by shear-wave splitting
Seismic shear wave splitting focused on the structure of the upper mantle
2015/1/6
We analyse splitting of teleseismic shear waves recorded during the PASSEQ passive experiment (2006–2008) focused on the upper mantle structure across and around the Trans-European Suture Zone (TESZ)....
Tomography of core-mantle boundary and lowermost mantle coupled by geodynamics: joint models of shear and compressional velocity
Composition and state Geological and geophysical evidences of deep processes
2015/8/18
We conduct joint tomographic inversions of P and S travel time observations to obtain models of delta v_P and delta v_S in the entire mantle. We adopt a recently published method which takes into acc...
Shear heating not a cause of inverted metamorphism
Shear heating not a cause inverted metamorphism
2014/4/15
An archetypal example of inverted metamorphism purportedly resulting from shear heating is found in the Pelona Schist of southern California (United States). Recent studies demonstrate that the Pelona...
An experimental investigation for external RC shear wall applications
An experimental investigation external RC shear wall applications
2010/10/21
The strength and rigidity of most reinforced concrete (RC) buildings in Turkey, which are frequently hit by destructive earthquakes, is not at a sufficient level. Therefore, the result of earthquakes ...
Three‐dimensional earthquake sequence simulations with evolving temperature and pore pressure due to shear heating: Effect of heterogeneous hydraulic diffusivity
Three‐dimensional earthquake sequence simulations evolving temperature pore pressure due to shear heating:heterogeneous hydraulic diffusivity
2014/4/8
A new methodology for three‐dimensional (3‐D) simulations of earthquake sequences is presented that accounts not only for inertial effects during seismic events but also for shear‐induced temperature ...
Retrieval of Moho-reflected shear wave arrivals from ambient seismic noise
Interferometry Body waves Crustal structure
2014/4/10
Theoretical studies on ambient seismic noise (ASN) predict that complete Green’s function between seismic stations can be retrieved from cross correlation. However, only fundamental mode surface waves...
Pulse-like and crack-like dynamic shear ruptures on frictional interfaces: experimental evidence, numerical modeling, and implications
Earthquake physics Mechanics of faulting Pulse-like rupture Shear cracks Velocity-dependent friction Linear slip-weakening friction
2014/4/8
Destructive large earthquakes occur as dynamic frictional ruptures along pre-existing interfaces (or faults) in the Earth’s crust. One of the important issues in earthquake dynamics is the local durat...
Nonlinear saturation of Rayleigh-Taylor instability and generation of shear flow in equatorial spread-F plasma
Nonlinear saturation Rayleigh-Taylor instability shear flow equatorial spread-F plasma
2009/11/12
An analysis of low order mode coupling equations is used to describe the nonlinear behaviour of the Rayleigh-Taylor (RT) instability in the equatorial ionosphere. The nonlinear evolution of RT instabi...
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary
oblique disturbances supersonic shear flow instability geomagnetic tail boundary
2009/11/12
A study is made of the influence of the longitudinal magnetic field and density inhomogeneity on the supersonic shear flow instability at the magnetospheric tail boundary. It is shown that the most un...
On the origin of time-dependent behaviour in a barotropically unstable shear layer
time-dependent behaviour unstable shear layer
2009/11/12
An experimental study on the instability of a detached Stewartson layer, using an annular, rotating tank with flat, rigid upper and lower boundaries, showed an instability to steady vortices at a crit...
Stochastic resonance in a nonlinear model of a rotating,stratified shear flow,with a simple stochastic inertia-gravity wave parameterization
Stochastic resonance nonlinear model shear flow stochastic inertia-gravity wave parameterization
2009/11/11
We report on a numerical study of the impact of short, fast inertia-gravity waves on the large-scale, slowly-evolving flow with which they co-exist. A nonlinear quasi-geostrophic numerical model of a ...
Stochastic parametric resonance in shear flows
Stochastic parametric resonance shear flows
2009/11/11
Time-periodic shear flows can give rise to Parametric Instability (PI), as in the case of the Mathieu equation (Stoker, 1950; Nayfeh and Mook, 1995). This mechanism results from a resonance between th...