Although earthquake magnitude is one factor that affects tsunami generation, there are other important factors to consider. The earthquake must be a shallow marine event that displaces the seafloor.
PAGER stands for the Prompt Assessment of Global Earthqu
Although both are sea waves, a tsunami and a tidal wave are two different and unrelated phenomena. A tidal wave is the wave motion of the tides.
Those estimates can be found on our Earthquake Statistics website.
For information on tsunami science and hazard mitigation:
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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).
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.
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.