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The movement was the equivalent of a 6.7 magnitude earthquake. [21] The motion did not trigger an earthquake and was only detectable as silent, non-earthquake seismic signatures. [22] In 2004, a study conducted by the Geological Society of America analyzed the potential for land subsidence along the Cascadia subduction zone.
The largest recorded megathrust earthquake was the 1960 Valdivia earthquake, estimated between magnitudes 9.4–9.6, centered off the coast of Chile along the Peru-Chile Trench, where the Nazca plate subducts under the South American plate. [26] This megathrust region has regularly generated extremely large earthquakes.
In 2011, more than 18,000 people lost their lives amid a magnitude-9.0 earthquake and tsunami in Tohoku, Japan, The New Yorker noted. That catastrophe wound up costing approximately $220 billion.
The earliest known earthquake in the U.S. state of California was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also documented earthquakes.
1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US) 2010 Baja California earthquake (Mexico near S California) – magnitude 7.2 earthquake, 4 fatalities and 100 injuries, none in the United States
Goulet said the USGS analysis suggests there is about a 5% chance that an earthquake greater than magnitude 6.0 could rupture in the area within the next week. “Following a 7, there could be ...
The 2021 Antelope Valley earthquake occurred in a rural area near the California–Nevada border. Due to the remoteness of the area, there were few sensor stations near the earthquake and this resulted in the M W 6.0 earthquake incorrectly being split into "phantom quakes" by the system – a M W 4.8 near Lee Vining , M W 4.8 near Stockton ...
1139 Ganja earthquake: September 30, 1139: Ganja, Seljuk Empire (modern-day Azerbaijan) 230,000–300,000 [10] 7.0 M w Death toll may have been a historical conflation with earthquakes on November 1137 in the Jazira plain and the 1138 Aleppo earthquake. [11] 2004 Indian Ocean earthquake and tsunami: December 26, 2004: Sumatra, Indonesia ...