group velocity
Surface wave group velocity in the Osaka sedimentary basin, Japan, estimated using ambient noise cross correlation functions
... the group velocity of the Rayleigh wave was faster than that of the Love wave at those ...three-dimensional velocity struc- ...existing velocity structure ...
20
Fluctuation of group velocity of Love waves across a dent in the continental crust
... the group ve- locity of Love waves across dented continental crust in a period range of 20–50 ...the group velocity were investigated by vary- ing the sloping angle of the dent in a range of ...of ...
10
Electromagnetic Wave Propagation in Nonlocal Media: Negative Group Velocity and Beyond
... can be made negative by solutions of Equation (20) as we will show in Sec. 5. In this case, no assumption like ∂n/∂ω < 0 is necessary and condition (21) can be satisfied in low dissipation media, leading to negative ...
26
Control of group velocity dispersion in single mode fiber based on stimulated Brillouin scattering
... phase velocity is modified, caused by the physical phenomena for example ...reduced velocity is defined as the changes of c to the phase velocity of ...phase velocity change but it happens ...
31
On the group velocity of symmetric and upwind numerical schemes
... In this case, while the amount of dissipation per time step diminishes, accumulative wave damping remains exponential in time and overall the scheme maintains enough dissipation to kill [r] ...
9
Crustal structure of the carpathian-pannonian region from ambient noise tomography
... low group velocities at periods up to about 15 s reflect mainly thick ...low velocity regions in the 6 and 10 s group velocity maps (Figs 7a and b): the B´ek´es and Mak´o Basins below the ...
20
To Control the Propagation Characteristic of One-Dimensional Plasma Photonic Crystal Using Exponentially Graded Dielectric Material
... The propagation characteristics of PPCs are not only the function of plasma parameter but also the function of angle of incidence [16, 17]. Very recently, Prasad et al. [18, 19] have investigated the modal propagation ...
14
Permanent wave structures on an open two layer fluid
... shown that the nonlinear interaction is resonant when the group velocity of the fast free surface wave mode equals the phase velocity of the slow interface wave mode,.. This property lea[r] ...
31
The Role of Energy Dispersion in the Genesis and Life Cycle of African Easterly Waves.
... the group velocity is estimated to be eastward at ...phase velocity is estimated to be westward at ...relative group ve- locity is much faster toward the ...the group velocity is ...
167
Elastic constant determination of unidirectional composite via ultrasonic bulk wave through transmission measurements : a review
... phase velocity to group velocity for both longitudinal and transverse ...and group velocity wave deviation e ff ects being both potentially positive and negative and thus fi ghting ...
37
Optimally Accurate Second-Order Time-Domain Finite-Difference Scheme for Acoustic, Electromagnetic, and Elastic Wave Modeling
... 1 shows the variation of numerical phase velocity and group velocity with respect to the normalized time step, ∆ c t , for a given spatial resolution, number of cells per wave- length, i[r] ...
7
Vortex interactions with topographic features in geophysical fluid dynamics
... the velocity of the waves with k = ...maximum group velocity (see equation ...the group velocity of the topographic long waves near an escarpment, and applied the method of Akylas ...
238
Computer model on linear wave propagation
... i) Wave theory adopted in this study is based on linear wave theory developed by Airy, which include wave length, wave celerity, group velocity, orbital velocity, wave energy, and wave power. The ...
23
Particle wave symmetry in quantum mechanics and special relativity theory
... phase velocity is not equal with group velocity, this is a fact ...phase velocity is equal with group ...phase velocity is not equal with group velocity) is an ...
7
A Travelling Wave Group II: Antiparticles in a Force Field
... wave group, shows that the par- ticle has a positive group velocity and positive inertial ...wave group, and also with Dirac’s ...wave group gives an explanation for group and ...
7
P-wave diffusion in fluid-saturated medium
... angular velocity or frequency, k is the wavenumber, c is the wave velocity along with the dispersion relation ω = ck, the group velocity of a wave is the velocity with the overall shape ...
8
Towards attosecond high-energy electron bunches : controlling self-injection in laser wakefield accelerators through plasma density modulation
... Plasma waves driven by an intense laser pulse are capable of supporting accelerating fields many orders of magnitude in excess of those possible in conventional accelerators. The strongest accelerating fields are ...
6
The nature of OH/IR stars in the galactic centre
... expansion velocity group contains stars with higher luminosities, is more metal- rich than the low expansion velocity group and is more likely a population intrinsic to the galactic ...
19
The short-term effect of bariatric surgery on non-invasive markers of artery function in patients with metabolic syndrome
... Pulse wave velocity was measured in all patients in accordance with the established protocol. The PWV eval- uation was performed after night rest according to the European Society of Cardiology guidelines, using ...
7
The duration effects of lumbar extensor muscle fatigue on postural control in soccer players
... Any disorder in the postural control increases the risk of falling and injury (10); larger L5/S1 joint forces were ob- served during both motions after fatigue. Such changes showed potentially increased risk of back ...
5