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

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

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.

High-velocity frictional behavior and microstructure evolution of fault gouge obtained from Nojima fault, southwest Japan

2009 ◽  
Vol 471 (3-4) ◽  
pp. 285-296 ◽  
Author(s):  
Kazuo Mizoguchi ◽  
Takehiro Hirose ◽  
Toshihiko Shimamoto ◽  
Eiichi Fukuyama
Keyword(s):  
Microstructure Evolution ◽  
High Velocity ◽  
Fault Gouge ◽  
Southwest Japan ◽  
Frictional Behavior ◽  
Nojima Fault
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