When the earth stopped shaking, more than 148,000 people reported their experience of the earthquake on the USGS Photo of chimney damage at a house in Louisa County, Virginia. The shaking was Groundwater level changes (most <15 cm) were recorded at 48 wells as far as 550km from the epicenter, and the 40 3-component seismometers and 200 1-component seismometers, which were all deployed within about one week after the mainshock, provided the best-recorded aftershock sequence ever in the eastern U.S.No evidence of surface rupture has been found, but there were small sand boils identified near the epicenter caused by strong shaking as well as rock falls up to 245 km away.
For the fault that ruptured, however, geologic boundaries imaged above and below the fault do not show evidence for large displacement, which suggests that the fault may not fit the reactivation model and instead may be a relatively new fault.Earthquake damage in Sherman building, an Armed Forces Retirement Home, Washington DC, August 2011. The magnitude 5.8 earthquake that struck Louisa County was among the largest to occur along the eastern seaboard of the United States. website. Submitted by Anonymous (not verified) on Mon, 07/30/2018 - 14:12. People in certain areas of Pennsylvania, however, did not feel the earthquake at all despite being relatively close to the epicenter. Dr. Blanpied discusses how scientists are using the August 23 earthquake to inform estimates of the region's seismic hazard.A year after the August 23, 2011 Virginia earthquake, USGS geologist Dr. Mike Blanpied discusses whether a similar event could occur again in the region in the near future, and in an earthquake, what you can do to stay stay safe.Watch video interviews with four people discussing their experiences near the epicenter of the magnitude 5.8 earthquake in central Virginia on August 23, 2011.
Regardless of where damage occurred, the epicenter was Virginia, so the the most accurate name for the quake is 2011 Virginia earthquake.--MONGO 22:15, 25 August 2011 (UTC) Edit request from 98.218.170.71, 25 August 2011 This arc was likely outboard of ancient North … A 2.5-magnitude shock occurred just after midnight on August 25, followed at 05:07 UTC by the strongest, a magnitude 4.5 aftershock that woke many residents in Scientists have known that the difference between seismic shaking in the East versus the West is due in part to the geologic structure and rock properties that allow seismic waves in the East to travel farther without weakening, but during November 2012, the USGS announced that recent research showed that earthquake shaking in the eastern United States can travel much farther and cause damage over larger areas than previously thought.
The 2011 Virginia earthquake was a magnitude 5.8 (M w) earthquake in the U.S. state of Virginia on August 23, 2011, at 1:51 PM EDT (17:51 UTC).The focus was 60 kilometres (37 mi) northwest of Richmond and 8 kilometres (5 mi) from the town of Mineral, Virginia.The earthquake was along the Spotsylvania Fault, an ancient fault line that now sits in the middle of the North American plate. Shaking intensity variation can be due to propagation path effects, source directivity, and/or site...Nearly 1 year ago, on 23 August, tens of millions of people in the eastern United States and southeastern Canada were startled in the middle of their workday (1:51 P.M. local time) by the sudden onset of moderate to strong ground shaking from a rare magnitude (M) 5.8 earthquake in central Virginia. The 2011 Virginia earthquake was a magnitude 5.8 (M w) earthquake in the U.S. state of Virginia on August 23, 2011, at 1:51 PM EDT (17:51 UTC).
Indeed, this earthquake reminded us that damaging earthquakes, though infrequent, are a part of living in the eastern United States.A list of highlights of the scientific findings so far includes:An earthquake of the same size in the Eastern U.S. is felt more widely than one in the Western U.S. because seismic waves travel further in the colder, denser crust of the Eastern U.S. (Public domain. For example, Twitter users in such cities as New York City and Boston reported reading tweets about the earthquake from users in Washington, D.C., or Richmond, Virginia, 15 to 30 seconds before feeling the quake itself. Public domain. The focus was 60 kilometres (37 mi) northwest of Richmond and 8 kilometres (5 mi) from the town of Mineral, Virginia .
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