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4.0 – 4.9
- 3.0 – 3.9 (Light): Light earthquakes are often felt, but rarely causes significant damage. Approximately 130,000 of these quakes occur annually. 4.0 – 4.9 (Moderate): A moderate earthquake causes a noticeable shaking of indoor items, accompanied by rattling noises. Significant damage is unlikely.
sciencenotes.org › richter-scale-and-earthquake-magnitudeRichter Scale and Earthquake Magnitude - Science Notes and ...
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See the Intensity section below for more details on shaking intensity measurements. Types of Magnitudes. Magnitude is expressed in whole numbers and decimal fractions. For example, a magnitude 5.3 is a moderate earthquake, and a 6.3 is a strong earthquake.
Earthquake Intensity measurement is an on-the-ground description. The measurement explains the severity of earthquake shaking and its effects on people and their environment. Intensity measurements will differ depending on each location’s nearness to the epicenter. There can be multiple intensity measurements as opposed to one magnitude ...
The Richter scale [1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Francis Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude s...
Jul 19, 2023 · 4.0 – 4.9 (Moderate): A moderate earthquake causes a noticeable shaking of indoor items, accompanied by rattling noises. Significant damage is unlikely. There are about 13,000 occurrences globally each year.
Aug 3, 2020 · Earthquake Hazard Potential Effects of Shaking ; A/White : Very small probability of experiencing damaging earthquake effects. B/Gray: Could experience shaking of moderate intensity. Moderate shaking—Felt by all, many frightened. Some heavy furniture moved; a few instances of fallen plaster. Damage slight. C/Yellow : Could experience strong ...
The Modified Mercalli intensity scale ( MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake. Magnitude scales measure the inherent force or strength of an earthquake – an event occurring at greater or lesser depth.
MAGNITUDE / INTENSITY COMPARISON. The following table gives intensities that are typically observed at locations near the epicenter of earthquakes of different magnitudes. Magnitude. Typical Maximum. Modified Mercalli Intensity. 1.0 – 3.0. I. 3.0 – 3.9. II – III.
