What will happen to richmond in an earthquake

Earthquake of magnitude 2. By Stephanie Rollins Last updated Oct 23, Very weak tremor Pinole vlly 1. Stephanie Rollins posts 0 comments. Next Post Time, TV info, game notes, forecast, live blog. You might also like More from author. Prev Next. Sign in. Welcome, Login to your account. Forget password? Remember me. This reveals the extraordinary distances that damaging ground shaking can extend in eastern North America — about 10 times further than damaging or felt shaking extends in western North America.

This discrepancy is due to the older and denser rocks of the earth's crust on the East Coast that seismic waves can travel through more efficiently without losing energy. The August 23, earthquake marked the first time scientists were able to associate seismic activity in the area with a particular fault since it was large enough to produce enough aftershocks to delineate the causative fault.

Moderate to large earthquakes are infrequent in the Central and Eastern U. What we do know is from historical accounts; past earthquake magnitudes have been estimated by comparing recent measured earthquake magnitudes and modern accounts of shaking intensity with the historical accounts of reported intensities. Reported experiences for this earthquake provided data that can be used to more accurately estimate the shaking distribution from moderate-to-large future earthquakes in this area, as well as help us better estimate the magnitudes of older historical events with fewer historical accounts.

Indeed, this earthquake reminded us that damaging earthquakes, though infrequent, are a part of living in the eastern United States. An earthquake of the same size in the Eastern U. Ultimately, scientific studies of this earthquake have helped scientists confirm with empirical data what they were previously able to only estimate or model from the sparse data and smaller earthquakes in this area.

Eventpage Tectonic summary, maps and data. Did You Feel It? Shaking from the earthquake reported by citizen scientists. ShakeMap Shaking recorded on seismic instruments.

The 23 August Mw moment magnitude 5. Seismic data indicate that the earthquake rupture occurred on a southeast-dipping reverse fault and Ground shaking due to earthquakes in the eastern United States EUS is felt at significantly greater distances than in the western United States WUS and for some earthquakes it has been shown to display a strong preferential direction.

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 P. Treating the shaking as if it were a fire drill, The 23 August Mineral, Virginia, earthquake Mw 5.

Although no large landslides occurred, the shaking did trigger many rock and soil falls from steep river banks and natural cliffs in the epicentral area and from steep road cuts along, and The intensity data collected by the U. More than , This map summarizes two and a third centuries of earthquake activity. The seismic history consists of letters, journals, diaries, and newspaper and scholarly articles that supplement seismograph recordings seismograms dating from the early twentieth century to the present.

All of the pre-instrumental historical earthquakes were large enough to Blanpied discusses how scientists are using the August 23 earthquake to inform estimates of the region's seismic hazard. 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. Tens of millions of people in the eastern U. The magnitude 5. It caused extensive damage in central Virginia and was likely felt by more people than any other earthquake in U. The research effort began by establishing which factors most influence the pattern of ground shaking during a Cascadia earthquake.

Another factor they found to be important is how far inland the fault slips. A magnitude This is still an area of current research, but comparisons of different seismic stations during the Chile earthquake and the Tohoku earthquake show that some parts of the fault released more strong shaking than others. Wirth simulated a magnitude Her 50 simulations used variables spanning realistic values for the depth of the slip, and had randomly placed hypocenters and sticky points.

The high-resolution simulations were run on supercomputers at the Pacific Northwest National Laboratory and the University of Texas, Austin. Overall, the results confirm that coastal areas would be hardest hit, and locations in sediment-filled basins like downtown Seattle would shake more than hard, rocky mountaintops.

But within that general framework, the picture can vary a lot; depending on the scenario, the intensity of shaking can vary by a factor of But none of the pictures is rosy.