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Bigger earthquakes have more and larger aftershocks and the sequences can last for years or even longer especially when a large event occurs in a seismically quiet area; see, for example, the New Madrid seismic zone, where events still follow Omori's law from the main shocks of 1811–1812. An aftershock sequence is deemed to have ended when ...
The 4.8-magnitude earthquake that hit New Jersey on Friday has produced more than three dozen aftershocks, and experts say more could be on the way within the next week.. As of late Monday morning ...
Debate on long-lived aftershocks Hough coauthored a similar 2014 study using extensive computer modeling to understand activity in the New Madrid seismic zone, and it came to a different conclusion.
On April 5, 2024, at 10:23 EDT (14:23 UTC), a M w 4.8 earthquake occurred in the U.S. state of New Jersey, with the epicenter in Tewksbury Township.While it was felt across the New York metropolitan area, Delaware Valley, the Washington D.C metropolitan area, and other parts of the northeastern United States between Virginia and Maine, it had a relatively minor impact, with no major damage ...
The fault zone is no more than 50 m (160 ft) wide, 4 km (2.5 mi) long, with the earliest seismic swarm events localized down near its base at 9 km (5.6 mi) below the surface and the latest events migrating upwards to 5 km (3.1 mi) below the surface and spreading throughout the fault zone's length.
There have been over 20 aftershocks in the hours following the New Jersey earthquake Friday ... Long Valley, NJ at 11:49 p.m. Magnitude 1.8: Califon, NJ 11:37 a.m. ... The best last-minute ...
By comparing previous aftershock sequences in California against a decay rate equation, the Northridge aftershock activity was highly energetic but decayed marginally quicker than average. The strongest aftershock, measuring M w 5.9, was recorded one minute after the mainshock. These aftershocks were distributed in three zones; the first zone ...
An agricultural community in Imperial County experienced a 4.8 earthquake and more than 180 smaller aftershocks.