Physics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3316319m&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 16, CiteID L16319
Physics
10
Structural Geology: Dynamics And Mechanics Of Faulting (8118), Structural Geology: Fractures And Faults, Structural Geology: Mechanics, Theory, And Modeling, Structural Geology: Rheology And Friction Of Fault Zones (8163)
Scientific paper
From high-velocity friction experiments on gabbro rock at a rate of 85 mm/s, we found that a fault with a thin gouge layer experienced slip weakening with a drop of about 80% in the friction coefficient. At room humidity conditions, the fault subsequently recovered its complete strength, over an interval of several minutes after the slip terminated. The strength recovery did not occur under dry N2 gas-saturated condition. This result can be interpreted as the interaction of moisture with gouge particles: moisture-drained weakening due to frictional heating and moisture-absorbed strengthening due to cooling. This new mechanism can cause dynamic weakening of faults, which controls earthquake rupture propagation.
Fukuyama Eiichi
Hirose Takehiro
Mizoguchi Kazuo
Shimamoto Toshihiko
No associations
LandOfFree
Moisture-related weakening and strengthening of a fault activated at seismic slip rates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Moisture-related weakening and strengthening of a fault activated at seismic slip rates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moisture-related weakening and strengthening of a fault activated at seismic slip rates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1780764