ESS105H1 Lecture Notes - Lecture 7: Plate Tectonics, Seismic Wave, Hypocenter
Document Summary
Natural disasters: catastrophic events with geological, atmospheric, and hydrological origins that can cause fatalities, property damage, and social environmental disruptions. Earthquake (eq): a trembling or shaking of the ground caused by a sudden release of energy stored in rocks beneath the earth"s surface. Hypocenter (or focus): the point where the fault first starts to slip, the hypocenter is almost always below the earth"s surfaces. Epicenter: the point on the earth"s surface that is directly above the hypocenter. Fault plane: the flat surface along which there is slip during an eq: seismic waves are generated from each point on the fault plane that slips. Fault slips suddenly and this allows the rocks to unbend and stored energy is released in the form of. Faults form along the boundaries between different tectonic plates (i. e. faults accommodate the motion of the. Eq occur along the descending slab of oceanic lithosphere.
