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It was the deadliest earthquake in the immediate area since a M s 6.6 event occurred in Yadong County on 20 November 1980. That earthquake had an epicenter 176 km (109 mi) away and killed 3 people in the county. The 7 January 2025 earthquake was also the largest in the area since a M s 7.1 struck 171 km (106 mi) to the south on 26 April 2015.
In most earthquakes, the isoseismals define a single clear area of maximum intensity, which is known as the epicentral or meizoseismal area. [8] In some earthquakes, more than one maximum exists because of the effect of ground conditions or complexities in the rupture propagation, and other information is, therefore, required to identify the ...
According to the USGS, "ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake response and recovery, public and scientific information, as well as for preparedness exercises and ...
Animated map of seismicity near Turkey quakes starting ~3am local time plotting Feb 6 M7.8 mainshock (pink), early aftershocks (orange), M7.5 aftershock to the north (tan), and subsequent ...
Earthquakes in the New Madrid and Wabash Valley seismic zones from 1974 to 2002, with magnitudes larger than 2.5. The zone had four of the largest earthquakes in recorded North American history, with moment magnitudes estimated to be as large as 7 or greater, all occurring within a 3-month period between December 1811 and February 1812. Many of ...
Earthquake epicenters 1963–98. In seismology, a seismic zone or seismic belt is an area of seismicity potentially sharing a common cause. It can be referred to as an earthquake belt as well. It may also be a region on a map for which a common areal rate of seismicity is assumed for the purpose of calculating probabilistic ground motions.
ECDM map. The earthquake occurred as a result of oblique reverse and strike-slip faulting.The rupture had an area of 51 km (32 mi) × 28 km (17 mi), and occurred on either a moderately dipping oblique reverse and right-lateral fault striking east, or a steeply dipping oblique reverse and left-lateral fault striking west. [2]
The 1949 Olympia earthquake was a damaging magnitude 6.7 intraslab earthquake that occurred at 52 km depth and caused eight deaths. Another notable intraslab earthquake in the Puget Sound region was the magnitude 6.8 2001 Nisqually earthquake. Intraslab earthquakes in Cascadia occur in areas where the subducting plate has high curvature. [13]