View Single Post
  #10   Report Post  
Old December 21st 04, 07:11 PM posted to uk.sci.weather
John Hall John Hall is offline
external usenet poster
 
First recorded activity by Weather-Banter: Nov 2003
Posts: 6,314
Default (O/T) Earthquake ?

In article ,
Michael Gibson writes:
Just curious, and again O/T (sorry). From the link you gave:
http://www.quakes.bgs.ac.uk/recbrit.html

How do you get a negative magnitude earth tremor/quake?


The scale is logarithmic, isn't it? So each subtraction of 1 from the
magnitude will indicate a reduction in the intensity by a factor of 10.
--
John Hall

You can divide people into two categories:
those who divide people into two categories and those who don't