GEOL 101 Lecture Notes - Lecture 24: Seismogram, Love Wave, Richter Magnitude Scale
Document Summary
Types of faults: faults- planar cracks in earth, normal, reverse or thrust, strike-slip. Types of earthquake faults: three main types of stress. Tear (shear: fault line- where a fault plane intersects the surface. Focus: aka hypocenter, point on a fault at which the rst movement or break occurs, epicenter directly above on earth"s surface. On hanging wall: focus and epicenter typically reported as a location and depth. Foreshocks: one or more smaller earthquakes the precede a larger earthquake, occurs in same vicinity as larger earthquake. perhaps on same fault or on adjacent faults, not all earthquakes are preceded by foreshocks. !1: smaller earthquakes that occur afterwards as the consequence of a larger. Elastic rebound theory: explains how repeated cycles of stress accumulation and release along a fault line creates earthquakes, amount of time between earthquakes can only be loosely guessed. Seismic waves: release of stored up energy, three kinds.
