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Magnitude is the size of the earthquake. An earthquake has a single magnitude. The shaking that it causes has many values that vary from place to place based on distance, type of surface material, and other factors. See the Intensity section below for more details on shaking intensity measurements. Types of Magnitudes
Earthquake intensities are numerical values assigned to the effects of earthquakes on people and their works, and on the natural environment. Intensities are evaluated using the Modified Mercalli Intensity Scale of 1931, which contains levels of effects ranging from intensity I, barely perceptible, to intensity XII, total damage.
Earthquake intensity scales describe the severity of an earthquake’s effects on the Earth's surface, humans, and buildings at different locations in the area of the epicenter. There can be multiple intensity measurements. The Modified Mercalli Scale measures the amount of shaking at a particular location. Earthquake Magnitude Scale.
Intensity and magnitude of earthquakes. Intensity scales; Earthquake magnitude; Earthquake energy; Frequency; Occurrence of earthquakes. Tectonic associations; Shallow, intermediate, and deep foci; Aftershocks, foreshocks, and swarms
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Jan 1, 2020 · The aim of this study is to investigate the correlation between seismic responses of NPP components and 23 earthquake IMs and identify the best IMs for correlating with damage of NPP structures. Particularly, low- and high-frequency ground motion records are separately accounted in correlation analyses.
- Duy Duan Nguyen, Duy Duan Nguyen, Bidhek Thusa, Tong Seok Han, Tae Hyung Lee
- 2020
Jan 1, 2021 · Intensity data give surprisingly robust measures of earthquake magnitudes (see “Earthquake, Magnitude”). This important fact qualifies the macroseismic method to be used for magnitude determinations of historical earthquakes occurring in early or pre-instrumental times.
EEIS can be used as a tool for several purposes, such as: 1) to graphically illustrate damage potential of ground motions; 2) to rapidly identify vulnerable building types after an earthquake; 3) to assess capacity of buildings; 4) to facilitate incorporation of earthquake ground motion and building response data.
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