Geo @ ObjectGraph

Earth and Environmental Science Blog

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Relax east cost!

I just experienced earthquake and we evacuated from our building. After 5 minutes, I noticed my co-worker start checking-in 4-square’s new place “Earthquake Apocalypse in Long Island” – ok folks, relax :) .

I did not get data from my seismometer app but there is an interesting research by USGS. Virginia is expected earthquake area , “Virginia is classified as a “moderate” seismic risk, and has a 10-20% chance to experience a 4.75 quake every century or so. “

It seems it just happened in last hour.

 

Combined Result – Actual Earthquake Location v.s. Possible Area

Earthquake Map - Actual Location v.s. Possible Area

By the way, the depth 0.1km is very shallow. USGS might update this soon?

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/se082311a.php
Actual Earthquake Location

Actual Earthquake Location

 

http://earthquake.usgs.gov/earthquakes/recenteqsus/Maps/US2/37.39.-79.-77.php

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/se082311a.php

 

Probability of earthquake greater than 4.75 magnitude within next 100 years

Possible Area around Richmond, VA

http://www.virginiaplaces.org/geology/quake.html

 

 

All previous earthquakes:

http://www.geol.vt.edu/outreach/vtso/VA-Eq.html

Last big one is in 1976.

 

Note: USGS updated the data. Now it’s M5.8 and the depth is 6km.

 

 

 

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