PAGER stands for the Prompt Assessment of Global Earthquakes for Response.  It is an automated system that takes in seismic data from remote sensors in order to rapidly estimate earthquake shaking and the scope and impact of earthquakes around the world...
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Currently, PAGER results are not directly available to the public through e-mail. However, users can sign up for earthquake alerts through the USGS Earthquake Notification Service (ENS). This service lets you sign up for alerts from custom geographic...
The earliest reference we have to unusual animal behavior prior to a significant earthquake is from Greece in 373 BC. Rats, weasels, snakes, and centipedes reportedly left their homes and headed for safety several days before a destructive earthquake....
Report an earthquake experience or related observation through the Did You Feel It? citizen science webpage.The best way to do this is to click on the earthquake that you think you felt on one of the lists on the Earthquakes webpage, and then select the...
The results of past calculations are stored in a table near the bottom of the page. Subsequent calculations will be appended to this table until you reload or leave the page. Global Vs30 questions and comments
Currently, there are no methods available to do this. Evidence from some case histories suggests that the magnitude of the largest earthquake tends to increase as the total volume of injected wastewater increases. Injection pressure may also be a factor...
Both earthquakes and nuclear tests can rapidly release a large amount of energy. The energy source for small yield (typically less than 50 kilotons) thermonuclear devices is the splitting of heavy radioactive isotopes. This process produces about 20...
Earthquake size, as measured by the Richter Scale is a well known, but not well understood, concept. The idea of a logarithmic earthquake magnitude scale was first developed by Charles Richter in the 1930's for measuring the size of earthquakes occurring...