scholarly journals The frictional strength of talc gouge in high-velocity shear experiments

2017 ◽  
Vol 122 (5) ◽  
pp. 3661-3676 ◽  
Author(s):  
Xiaofeng Chen ◽  
Andrew S. Elwood Madden ◽  
Ze'ev Reches
Keyword(s):  
High Velocity ◽  
Velocity Shear ◽  
Frictional Strength

Weakening Mechanisms of Alpine Fault Gouge in High‐Velocity Shear Experiments

2019 ◽  
Vol 124 (7) ◽  
pp. 7413-7428 ◽  
Author(s):  
Xiaofeng Chen ◽  
Chance B. Morgan ◽  
Brett M. Carpenter ◽  
Ze'ev Reches
Keyword(s):  
High Velocity ◽  
Fault Gouge ◽  
Velocity Shear ◽  
Alpine Fault

Stability of the Landau resonance for drift modes in rotating tokamak plasma

2003 ◽  
Vol 69 (5) ◽  
pp. 371-382
Author(s):  
E. ASP ◽  
V. P. PAVLENKO ◽  
S. M. REVENCHUK
Keyword(s):  
Dispersion Relation ◽  
Linear Stability ◽  
High Velocity ◽  
Velocity Shear ◽  
Landau Damping ◽  
Tokamak Plasma ◽  
Drift Waves ◽  
Two Dimensional

The linear stability of drift waves in a poloidally rotating tokamak plasma is considered. The derived dispersion relation features a peaking of the diamagnetic frequency which gives the drift modes an irreducible two-dimensional character. We then show that inverse Landau damping can be suppressed and even stabilized, if the flow's shear is strong. Even though the instability, excited by the Landau resonance, is stronger at a high velocity shear for positive rotation velocities, effects due to the rotation of the plasma can reverse the sign and induce damping of the two-dimensional drift modes. This stabilizing mechanism works only for positive rotation velocities. For negative rotation velocities, we show that only modes with high poloidal mode numbers are unstable.

scholarly journals High‐velocity frictional strength across the Tohoku‐Oki megathrust determined from surface drilling torque

2016 ◽  
Vol 43 (6) ◽  
pp. 2488-2493 ◽  
Author(s):  
Kohtaro Ujiie ◽  
Tomoya Inoue ◽  
Junya Ishiwata
Keyword(s):  
High Velocity ◽  
Frictional Strength

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Supernovae and interstellar gas dynamics

1967 ◽  
Vol 31 ◽  
pp. 117-119
Author(s):  
F. D. Kahn ◽  
L. Woltjer
Keyword(s):  
Lower Limit ◽  
High Velocity ◽  
Gas Dynamics ◽  
Interstellar Cloud ◽  
Interstellar Gas ◽  
Random Motions ◽  
Relativistic Particles

The efficiency of the transfer of energy from supernovae into interstellar cloud motions is investigated. A lower limit of about 0·002 is obtained, but values near 0·01 are more likely. Taking all uncertainties in the theory and observations into account, the energy per supernova, in the form of relativistic particles or high-velocity matter, needed to maintain the random motions in the interstellar gas is estimated as 1051·4±1ergs.

Super-high Velocity Cartridges and Three-barrel Guns

1914 ◽  
Vol 111 (5) ◽  
pp. 82-82
Author(s):  
Frank C. Perkins
Keyword(s):  
High Velocity
Sign in / Sign up

Export Citation Format

Share Document