ESC 1000 Lecture Notes - Lecture 16: Seismometer, Seismogram, Richter Magnitude Scale
Document Summary
Type of wave that travels in the rock layers just below the earth"s surface surface waves. "push/pull" waves; they momentarily push (compress) and pull (stretch) rocks in the direction the wave is traveling. "shake" the particles at the right angles to their direction of travel. Intensity a measure of the amount of ground shaking at a particular location, based on observed property damage. Modified mercalli intensity scale developed using california buildings as standard. Calculated by measuring the amplitude of the largest seismic wave (usually an s wave or surface wave) recorded on a seismogram. Moment magnitude measures the total energy released during an earthquake. Earth"s surface tsunami faults that suddenly lift a large slab of seafloor. "harbor wave" is also known as a tsunami a tsunami in open ocean can go undetected because its height (amplitude) is usually less than __m, and the distance separating wave crests range from 100-700 kilometers (60-435miles)
