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Magnitude 7 Featured News
Death toll in China quake hits 113
Iran struck by magnitude 7.8 quake
Deep magnitude-7.0 earthquake registered in Colombia; no immediate reports of damage
First tsunami waves in Hawaii are small
USGS: Magnitude 7.7 quake hits Canada's British Columbia
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Earthquake Magnitude, Energy Release, and Shaking Intensity
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.
Earthquake - Magnitude, Seismology, Epicenter | Britannica
Ninety percent of the total seismic energy comes from earthquakes of magnitude 7.0 and higher—that is, those whose energy is on the order of 10 23 ergs or more. Frequency. There also are empirical relations for the frequencies of earthquakes of various magnitudes.
Earthquakes - National Geographic Society
Major earthquakes—magnitude 7.0-7.9—and great earthquakes—magnitude of 8.0 or higher—can destroy buildings and kill people and other animals. Photograph by ARKO DATTA/AFP. Article. Vocabulary. Hundreds of earthquakes occur on Earth everyday. Most of them are small, barely detectable by most people.
Richter scale - Wikipedia
7.0–7.9 Major VIII or higher Causes damage to most buildings, some to partially or completely collapse or receive severe damage. Well-designed structures are likely to receive damage. Felt across great distances with major damage mostly limited to 250 km from the epicenter. 10 to 20 per year 8.0–8.9 Great
9.7: Measuring Earthquakes - Geosciences LibreTexts
Major earthquakes of moment magnitude 7.0 and higher are extremely rare. The U. S. Geological Survey (USGS) Earthquakes Hazards Program real-time map shows the location and magnitude of recent earthquakes around the world.
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