Search Results - "Lockner, D"

Direct Evidence for Fluid Pressure, Dilatancy, and Compaction Affecting Slip in Isolated Faults by Proctor, B., Lockner, D. A., Kilgore, B. D., Mitchell, T. M., Beeler, N. M.

“…Earthquake instability occurs as a result of strength loss during sliding on a fault. It has been known for over 50 years that fault compaction or dilatancy…”
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Rapid Acceleration Leads to Rapid Weakening in Earthquake-Like Laboratory Experiments by Chang, J. C., Lockner, D. A., Reches, Z.

“…After nucleation, a large earthquake propagates as an expanding rupture front along a fault. This front activates countless fault patches that slip by…”
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Time‐Dependent Weakening of Granite at Hydrothermal Conditions by Jeppson, T. N., Lockner, D. A., Beeler, N. M., Moore, D. E.

“…The evolution of a fault's frictional strength during the interseismic period is a critical component of the earthquake cycle, yet there have been relatively…”
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The susceptibility of Oklahoma’s basement to seismic reactivation by Kolawole, F., Johnston, C. S., Morgan, C. B., Chang, J. C., Marfurt, K. J., Lockner, D. A., Reches, Z., Carpenter, B. M.

“…Recent widespread seismicity in Oklahoma is attributed to the reactivation of pre-existing, critically stressed and seismically unstable faults due to decades…”
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Premonitory acoustic emissions and stick-slip in natural and smooth-faulted Westerly granite by Thompson, B. D., Young, R. P., Lockner, D. A.

“…A stick‐slip event was induced in a cylindrical sample of Westerly granite containing a preexisting natural fault by loading at constant confining pressure of…”
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Frictional strength of wet and dry montmorillonite by Morrow, C. A., Moore, D. E., Lockner, D. A.

“…Montmorillonite is a common mineral in fault zones, and its low strength relative to other common gouge minerals is important in many models of fault rheology…”
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Laboratory triggering of stick-slip events by oscillatory loading in the presence of pore fluid with implications for physics of tectonic tremor by Bartlow, N. M., Lockner, D. A., Beeler, N. M.

“…The physical mechanism by which the low‐frequency earthquakes (LFEs) that make up portions of tectonic (also called non‐volcanic) tremor are created is poorly…”
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Evolution of Wear and Friction Along Experimental Faults by Boneh, Y., Chang, J. C., Lockner, D. A., Reches, Z.

“…We investigate the evolution of wear and friction along experimental faults composed of solid rock blocks. This evolution is analyzed through shear experiments…”
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Why earthquakes correlate weakly with the solid Earth tides: Effects of periodic stress on the rate and probability of earthquake occurrence by Beeler, N. M., Lockner, D. A.

“…We provide an explanation why earthquake occurrence does not correlate well with the daily solid Earth tides. The explanation is derived from analysis of…”
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Conversion of Wet Glass to Melt at Lower Seismogenic Zone Conditions: Implications for Pseudotachylyte Creep by Proctor, B. P., Lockner, D. A., Lowenstern, J. B., Beeler, N. M.

“…Coseismic frictional melting and the production of quenched glass called pseudotachylyte is a recurring process during earthquakes. To investigate how glassy…”
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The effect of mineral bond strength and adsorbed water on fault gouge frictional strength by Morrow, C. A., Moore, D. E., Lockner, D. A.

“…Recent studies suggest that the tendency of many fault gouge minerals to take on adsorbed or interlayer water may strongly influence their frictional strength…”
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Pore fluid pressure, apparent friction, and Coulomb failure by Beeler, N. M., Simpson, R. W., Hickman, S. H., Lockner, D. A.

“…Many recent studies of stress‐triggered seismicity rely on a fault failure model with a single free parameter, the apparent coefficient of friction, presumed…”
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Permeability reduction in granite under hydrothermal conditions by Morrow, C. A., Moore, D. E., Lockner, D. A.

“…The formation of impermeable fault seals between earthquake events is a feature of many models of earthquake generation, suggesting that earthquake recurrence…”
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Earthquake Rupture at Focal Depth, Part II: Mechanics of the 2004 M2.2 Earthquake Along the Pretorius Fault, TauTona Mine, South Africa by Heesakkers, V., Murphy, S., Lockner, D. A., Reches, Z.

“…We analyze here the rupture mechanics of the 2004, M2.2 earthquake based on our observations and measurements at focal depth (Part I). This event ruptured the…”
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Quantitative measure of the variation in fault rheology due to fluid-rock interactions by Blanpied, M. L., Marone, C. J., Lockner, D. A., Byerlee, J. D., King, D. P.

“…We analyze friction data from two published suites of laboratory tests on granite in order to explore and quantify the effects of temperature (T) and pore…”
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Low resistivity and permeability in actively deforming shear zones on the San Andreas Fault at SAFOD by Morrow, C., Lockner, D. A., Hickman, S.

“…The San Andreas Fault Observatory at Depth (SAFOD) scientific drill hole near Parkfield, California, crosses the San Andreas Fault at a depth of 2.7 km…”
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Crystallographic controls on the frictional behavior of dry and water-saturated sheet structure minerals by Moore, Diane E., Lockner, David A.

“…We compare the frictional strengths of 17 sheet structure mineral powders, measured under dry and water‐saturated conditions, to identify the factors that…”
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Quasi-static fault growth and shear fracture energy in granite by Lockner, D. A, Byerlee, J. D, Kuksenko, V, Ponomarev, A, Sidorin, A

“…Using a procedure originally developed to locate earthquakes, acoustic emission arrival-time data are inverted to obtain three-dimensional locations of…”
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Deep permeability of the San Andreas Fault from San Andreas Fault Observatory at Depth (SAFOD) core samples by Morrow, C.A., Lockner, D.A., Moore, D.E., Hickman, S.

“…The San Andreas Fault Observatory at Depth (SAFOD) scientific borehole near Parkfield, California crosses two actively creeping shear zones at a depth of…”
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A Geology and Geodesy Based Model of Dynamic Earthquake Rupture on the Rodgers Creek‐Hayward‐Calaveras Fault System, California by Harris, R. A., Barall, M., Lockner, D. A., Moore, D. E., Ponce, D. A., Graymer, R. W., Funning, G., Morrow, C. A., Kyriakopoulos, C., Eberhart‐Phillips, D.

“…The Hayward fault in California's San Francisco Bay area produces large earthquakes, with the last occurring in 1868. We examine how physics‐based dynamic…”
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