tag:blogger.com,1999:blog-5211670216140060946.post9121855228504152806..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: The San Juan Bautista Earthquakes as recorded at Modesto Junior CollegeGarry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5211670216140060946.post-39111305850731032122014-11-21T15:39:04.352-08:002014-11-21T15:39:04.352-08:00The mag 4.2 had an amplitude on the seismogram tha...The mag 4.2 had an amplitude on the seismogram that was 3.9x's bigger than the mag 3.6:<br /><br />10^(4.2-3.6)=3.9<br /><br /><br />In terms of energy release, the mag 4.2 released 7.94 times the energy of the 3.6:<br /><br />((10^1.5)^4.2)/((10^1.5)^5.8) = <br />= 10^(1.5*(4.2-3.6))<br />= 10**(1.5*0.6) <br />= 7.94<br /><br /><br />The USGS has a quick calculator here: http://earthquake.usgs.gov/learn/topics/calculator.php<br />SciGuy315https://www.blogger.com/profile/08316684673793283489noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-17527463603561020192014-11-20T16:40:01.684-08:002014-11-20T16:40:01.684-08:00Since 32 = 2^5, 0.2 points on the magnitude scale ...Since 32 = 2^5, 0.2 points on the magnitude scale doubles the energy release, and 0.1 point increases it by 1.4.<br /><br />So the difference between a 3.6 and a 4.2 should be 2^3 or 8x.<br /><br />Am I right, anyone?jrepkahttps://www.blogger.com/profile/10624685961793402257noreply@blogger.com