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An earthquake is the shaking of the Earth's surface caused by a sudden release of energy in the lithosphere. Learn about the types, characteristics, measurement, prediction, and history of earthquakes, as well as their impact on human societies and other celestial bodies.
A magnitude 7.2 earthquake that struck southwestern Montana near Yellowstone National Park on August 17, 1959, causing a huge landslide and 28 fatalities. The quake was felt in several states and territories, and triggered geysers and fault scarps in the park.
The 1960 Valdivia earthquake was the most powerful earthquake ever recorded, with a magnitude of 9.4–9.6 on the moment magnitude scale. It occurred in southern Chile and triggered devastating tsunamis across the Pacific Ocean, killing thousands of people and causing billions of dollars in damage.
A 7.7 Mw earthquake that killed 2,415 people and caused NT$300 billion worth of damage in Taiwan in 1999. It was the second-deadliest earthquake in Taiwan's history and occurred along the Chelungpu Fault in the western part of the island.
A magnitude 6.9 earthquake that struck the San Andreas Fault near Santa Cruz, California on October 17, 1989, causing 63 deaths and 3,757 injuries. The event was also known as the "World Series earthquake" because it occurred during a live broadcast of the 1989 World Series between the Giants and the Athletics.
Learn about the most disastrous volcanic eruption in U.S. history, which killed 57 people and caused billions of dollars in damage. The eruption was preceded by a series of earthquakes and steam-venting episodes, and followed by a huge landslide and lahars.
A seismic wave is a mechanical wave of acoustic energy that travels through the Earth or another planetary body. Learn about the different types of seismic waves, such as P-waves, S-waves, Rayleigh waves and Love waves, and how they are used to study Earth's structure and monitor earthquakes.
The earthquake had an epicenter in the Mishmi Hills to the northeast of the surface trace of the Mishmi Fault. Magnitudes calculated for the earthquake range from M w 8.6–8.8. making it the largest onshore earthquake ever recorded and the largest not associated with subduction. [5] It was the sixth largest earthquake of the 20th century. [7]