To PSN group:
 The ldgo.columbia.edu at:
>http://quake.wr.usgs.gov/cgi-bin/finger?quake@................. > had been
listing quakes and other seismic activity on the East Coast of the USA. It
had been covering an area from Maine to Virginia and parts of Ontario
Canada. It is no longer doing so. Does any one know of another site that
has the same information?

 On the subject of seismic activity, it would be informative if there was
some discussion on what we are seeing when the sensor detects an event.
Since I am novice in the field of seismology, I have a few of questions.

1: In some Earthquakes, why is it that the "P" and "S" waves do not arrive
at the time where I would expect them to? 

2: In some quakes, the Event starts with a large Spike and then gradually
decreases. Why?

3: Why do some quakes gradually swell. They look like a rubber garden hose
that is on the verge of blowing up. The 6.3 in the Solomon Islands on
7/9/99 made that kind of an unusual foot print.

Nick  

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