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With 1,620 small events in late January 2010, this swarm is the second-largest ever recorded in the Yellowstone Caldera. Interestingly, most of these swarms have "rapid-fire" characteristics: they seemingly appear out of nowhere and can churn out tens or hundreds of small to moderate quakes within a very short time frame.
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings – later followed by seismotomography imaging technique, [1] observations using space satellites from outer space, [2] artificial intelligence (AI)-based early earthquake warnings [3] – they rely mainly ...
Foreshock activity has been detected for about 40% of all moderate to large earthquakes, [2] and about 70% for events of M>7.0. [3] They occur from a matter of minutes to days or even longer before the main shock; for example, the 2002 Sumatra earthquake is regarded as a foreshock of the 2004 Indian Ocean earthquake with a delay of more than two years between the two events.
A major earthquake measuring 7.4 hit Taiwan early Wednesday, killing 9 and injuring at least 1,000. A 7.4 earthquake is exponentially more destructive than the 4.8 quake that struck central New ...
Moderately damaging earthquakes strike between New York and Wilmington, Delaware, about twice a century, the USGS said, and smaller earthquakes are felt in the region roughly every two to three years.
The Ramapo Fault today produces relatively small quakes, and the last period of major seismic activity was around 200 million years ago, experts estimate. New York City has its own share of faults ...
1892 Vacaville–Winters earthquakes [2] April 21, 1892: California 6.4 M L 0 1892 Vacaville–Winters earthquakes [2] October 31, 1895: Missouri 6.6 M L 0 1895 Charleston earthquake [2] September 4, 1899: Alaska 8.2 M s 0 1899 Yakutat Bay earthquakes [1] September 10, 1899: Alaska 8.2 M w 0 1899 Yakutat Bay earthquakes [1] December 25, 1899 ...
While the earthquakes are usually 22 years a part, the last quake in the area took place on September 28, 2004, which was 14 years later than usual (likely due to other earthquakes easing pressure ...