![]() Hungry for some science, but you don’t have time for a full-course research plate? Then check out USGS Science Snippets, our snack-sized science series that focuses on the fun, weird, and fascinating stories of USGS science. USGS studies strike-slip faults as part of our Earthquake Hazards Program, particularly the San Andreas Fault in California. Understanding how various faults behave helps us understand what kinds of seismic hazard exist. Use/Significance in the Earth Science Community:įaults behave in different ways: some slip down, other thrust up, some slide side-to-side, and each of these produce different magnitudes of earthquakes. Here is the shear stress, x and are distance measured along-strike and downdip on the fault plane, t is time, is slip distance, V pl is the plate velocity or forcing velocity, L is the along-strike dimension of the fault, is a viscous damping factor, and k is the stiffness kernel which we obtain from closed-form solutions (Okada. We use cookies to measure our website usage, help with our communications and marketing. It isn’t a new dance-move, but if it were, it’d be called the tectonic slide, because a strike-slip fault is where the two rock formations move mostly horizontally. We observed the formation of thwse strike-slip faults and associated structures at two large landslides in central Utah during 1983-1985. Consistent with the notion that segment coalescence is the fundamental process for fault evolution, the mean segment length of representative strike-slip faults examined in this study is. Large landslides are bounded on their flanks and on elements within the landslides by structures analogous to strike-slip faults. Herein, we demonstrate that ground motions due to strike-slip earthquakes can contribute to the generation of large tsunamis (>1 m), under rather generic conditions. Normal faults: faults in which the hanging wall is moved. 3.The relation of the fault altitude with the altitude of the displaced bed. ![]() By Ikluft - Own work, GFDL, (Public domain.) Structures associated with strike-slip faults that bound landslide elements. Strike-slip faulting has generally been considered insufficient for triggering large tsunamis, except through the generation of submarine landslides. Classification of faults Following are the factors commonly considered important : 1.The apparent movement of the rock blocks along the fault plane. Aerial photo of the San Andreas Fault in the Carrizo Plain. ![]()
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