!!! (TNT) , . - 3,2 . (COPY I PASTE ):For example, a magnitude 1.0 earthquake is roughly equivalent to the energy release from an explosion of about 70 pounds of TNT (a mid-sized construction site blast), a magnitude 2.0 earthquake is similar to an explosion of 1 metric ton of TNT, and a magnitude 4.0 earthquake is approximately equivalent to the energy release from an explosion of 1,000 tons of TNT (a small nuclear blast). - 1 2 . :http://hvo.wr.usgs.gov/volcanowatch /2008/08_02_21.html -, :http://en.wikipedia.org/wiki/Moment_magni tude_scale , !!! , 1000 , !!!