Measuring & Locating Quakes. Measuring and Locating Earthquakes. Objectives. Compare and contrast earthquake magnitude and intensity and the scales used to measure each. . Explain why data from at least three seismic stations are needed to locate an earthquake’s epicenter.
2. Moment Magnitude Scale
3. Modified Mercalli Scale
- measures in human terms. Uses Roman numerals I.-XII to indicate the size of a quake in terms of damage done. The same quake could register differently in different areas, depending on the quality of structures in the area.
Depth of Focus- deeper quakes usually have less of an impact on the Earth’s surface.