And the more important difference between the two quakes in Christchurch was the location of the epicenter, which was first about 15 - 25 kms outside town, but very near to town this time a month ago.
When I was in Christchurch 2003 we stayed at the grey building (Heritage Hotel) you could see next to the damaged tower of the cathedrale there. I was there playing Schumann op.86. My friends live there. The historic part with the nice eateries, all gone. ###################################################################################### Am 11.03.2011 um 15:38 schrieb William Gross: > Hans, > > I've got to "hit and run" this morning. There actually might be someone on > the list with greater knowledge than I hold. > > The earthquake scale (I believe the Richter Scale has been replaced) is a > weird beast. As I understand it's a measurement at the point where > the actaul movement happens. Consider what happened in Christchurch, New > Zealand. The first earthquake several months ago, that did minimal damge > was a greater magnitude than the most recent one that did considerable > damage. The difference between the two was the first EQ happened at a much > greater depth than the second. > > I hope that helps a little in clarifying. > > On Fri, Mar 11, 2011 at 7:22 AM, Hans Pizka <[email protected]> wrote: > >> >> xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx >> The energy release of an earthquake, which closely correlates to its >> destructive power, scales with the 3⁄2 power of the shaking amplitude. Thus, >> a difference in magnitude of 1.0 is equivalent to a factor of 31.6 ( = >> (101.0)(3 / 2)) in the energy released; a difference in magnitude of 2.0 is >> equivalent to a factor of 1000 ( = (102.0)(3 / 2) ) in the energy released. >> >> xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx >> But in Japan there was a 7.2 quake two days ago, three shocks yesterday & >> 42 shocks today between 05:46 A.M. & 01:49 P.M. local Munich time, means >> 02:46 P.M. and 11:46 P.M. in Tokyo. >> >> But news did not talk about yesterdays heavy quake in Yuennan SW China with >> 25 dead & over 250 injured, but CCTV9 broadcasted the Japan disaster for >> several hours in their English program. >> >> Somebody out there to explain the above calculation in simplified words, >> please ? >> >> >> #################################################################################################### >> >> Am 11.03.2011 um 13:49 schrieb William Gross: >> >>> This is a major disaster for Japan, with tsunami affecting the >> Philippines. >>> Warnings have gone out to Gaum, Hawaii, Indonesia and the US West Coast. >>> >>> Early reports have it as an 8.9, by comparision the Northridge EQ that >> his >>> the LA area in 1994 was a 6.7. This equake is about 100 times more >>> powerful. >>> >>> On Fri, Mar 11, 2011 at 6:25 AM, Lawrence Yates <[email protected] >>> wrote: >>> >>>> I've just heard that the BBC Philharmonic Orchestra (based here in >>>> Mancheter) who are on tour in Japan at the moment are safe after the >>>> earthquake. Apparently they were going across a bridge in their coach >> when >>>> the earthquake struck. >>>> >>>> Lawrence >>>> >>>> >>>> >>>> -- >>>> Lawrenceyates.co.uk <http://lawrenceyates.co.uk/> < >> http://lawrenceyates.co.uk/> >>>> _______________________________________________ >>>> post: [email protected] >>>> unsubscribe or set options at >>>> >> https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/bgross%40airmail.net >>>> >>> _______________________________________________ >>> post: [email protected] >>> unsubscribe or set options at >> https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/hpizka%40me.com >> >> _______________________________________________ >> post: [email protected] >> unsubscribe or set options at >> https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/bgross%40airmail.net >> > _______________________________________________ > post: [email protected] > unsubscribe or set options at > https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/hpizka%40me.com _______________________________________________ post: [email protected] unsubscribe or set options at https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/archive%40jab.org
