More info on Richter scale at the link below.

William, would you kindly explain the strength of this quake by translating the 
energy
as below:   336 Mega tons   /  1,41 EJ  (Sendai quake)

One has to imagine the Sendai bay as a wonderful landscape with several 
volcanoes.
I was there twice & enjoyed gorgeous food there.

Toba volcano explosion 75.000 years ago on Sumatra is estimated at 84,4 Mega 
tons & 210PJ

http://en.wikipedia.org/wiki/Richter_magnitude_scale

###################################################################
Am 11.03.2011 um 13:57 schrieb [email protected]:

> Japan is certainly no stranger to major Earthquakes, but this one is the  
> largest Japan or the surrounding area has ever recorded I think. 
> 
> The Northridge Quake, although 'only' at a 6.7, had one of the fastest  
> ground accelerations ever recorded - at 1.7 Gs. 
> 
> As you can see from here, quakes of magnitude 8.5 or higher are very rare  
> indeed:
> _http://earthquake.usgs.gov/earthquakes/world/10_largest_world.php_ 
> (http://earthquake.usgs.gov/earthquakes/world/10_largest_world.php) 
> 
> -William
> 
> 
> 
> In a message dated 3/11/2011 7:50:05 A.M. Eastern Standard Time,  
> [email protected] writes:
> 
> 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 <yateslawrence@gma
> il.com>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/>
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