🚀 go-pugleaf

In article <CARASSO.94Jan25100721@Quaestor.Inference.COM>, carasso@Inference.COM (dr. carasso) writes:
>
>stead@seismo.CSS.GOV (Richard Stead) writes:
>>carasso@Inference.COM (dr. carasso) writes:
>>>An Earthquake travels --what-- about 900 MPH?  The speed of sound in
>>Strong shaking arrives at the S wave velocity - about 4 km/s, or about
>>9000 mph.  You're off by a factor of ten.
>
>Isn't there a first wave (I think it's called a P wave) that is
>non-forceful?  How much before the S wave is the P wave generated?
>What speed does it travel at?
>
>-- 
>					           
>
>Roger Carasso ______________________GOD IS MY MODERATOR_____
>My thoughts are my own and do not represent Inference Corp.
>_______________Will betray country for food_________________
>
>--

i was told before by a person who should be a expert that there are two
kinds of waves (i dno't recall names). the first wave is non-forceful and
the time interval between them is something like 20-30 secs. so if that's
right, i would imagine one have about enough time to hide under the table.