Last Update: Jan 14, 2023.

Submitted by: Crysta Arissa
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How an earthquake happens?

The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.

Often, several slightly different magnitudes are reported for an earthquake. This happens because the relation between the seismic measurements and the magnitude is complex and different procedures will often...

How is the magnitude of an earthquake determined? Earthquakes are recorded by a seismographic network. Each seismic station in the network measures the movement of the ground at that site. The slip of one block of rock over another in an earthquake releases energy that makes the ground vibrate.

How far was it from Mexico City and Cancun? The earthquake was approximately 123km from Mexico City. The earthquake was approximately 1,485.8 km from Cancun.

Earthquake Magnitude Scale

Learn more about how we measure earthquake magnitude. Earthquake Magnitude Scale.Magnit�rthquake EffectsEstimated Number Each Year7.0 to 7.9Major earthquake. Serious damage.10-158.0 or greaterGreat earthquake. Can totally destroy communities near the epicenter.One every year or two

Earthquake Magnitude Scale

Learn more about how we measure earthquake magnitude. Earthquake Magnitude Scale.Magnit�rthquake EffectsEstimated Number Each Year7.0 to 7.9Major earthquake. Serious damage.10-158.0 or greaterGreat earthquake. Can totally destroy communities near the epicenter.One every year or two

How Can I Locate the Earthquake Epicenter? Earthquake Magnitude Scale.Magnit�rthquake EffectsEstimated Number Each Year7.0 to 7.9Major earthquake. Serious damage.10-158.0 or greaterGreat earthquake. Can totally destroy communities near the epicenter.One every year or two

Magnitude is a measure of earthquake size and remains unchanged with distance from the earthquake. Intensity, however, describes the degree of shaking caused by an earthquake at a given place and decreases with distance from the earthquake epicentre.

Richter Scale

(That is, an earthquake measuring 5.0 releases 31 times more energy than an earthquake measuring 4.0.) In theory, the Richter scale has no upper limit, but, in practice, no earthquake has ever been registered on the scale above magnitude 8.6. (That was the Richter magnitude for the Chile earthquake of 1960.

Richter Scale

Magnitude scales, like the moment magnitude, measure the size of the earthquake at its source. An earthquake has one magnitude. The magnitude does not depend on where the measurement is made. Often, several slightly different magnitudes are reported for an earthquake.

Magnitude scales, like the moment magnitude, measure the size of the earthquake at its source. An earthquake has one magnitude. The magnitude does not depend on where the measurement is made. Often, several slightly different magnitudes are reported for an earthquake.

Magnitude scales, like the moment magnitude, measure the size of the earthquake at its source. An earthquake has one magnitude. The magnitude does not depend on where the measurement is made. Often, several slightly different magnitudes are reported for an earthquake.

Moment Magnitude, Richter Scale

Magnitude scales, like the moment magnitude, measure the size of the earthquake at its source. An earthquake has one magnitude. The magnitude does not depend on where the measurement is made. Often, several slightly different magnitudes are reported for an earthquake.

Moment Magnitude, Richter Scale

This great earthquake occurred in 1868 and had an estimated magnitude of 7.9. April 2 marks the anniversary of the largest earthquake to occur in the Hawaiian Islands in historic time. This great earthquake occurred in 1868 and had an estimated magnitude of 7.9.

San Francisco earthquake of 1989, also called Loma Prieta earthquake, major earthquake that struck the San Francisco Bay Area, California, U.S., on October 17, 1989, and caused 63 deaths, nearly 3,800 injuries, and an estimated $6 billion in property damage.