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Date: Fri, 20 Apr 2001 11:42:10 -0400 (EDT)
From: Mike Kaiser <mkaiser@lepmlk.gsfc.nasa.gov>
Reply-To: Mike Kaiser <mkaiser@lepmlk.gsfc.nasa.gov>
Subject: WAVES April 18 report
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Status: R

WAVES detected a type II associated with the April 18 proton event.  WAVES
observed an intermittent type II from about 02:55 UT (10 MHz) to about
14:00 UT (100 kHz).  This type II was preceded by the usual SA type IIIs
between 02:15 and 02:45.  Rough speed estimate with the usual assumptions
would be about 950 km/sec or so.  This is quite a bit higher than the 550 km/sec
from Culgoora, although the early part of our event near the sun seems
to fit their speed pretty well.  It's the 100 kHz stuff that needs the high 
speed.  Using our speed, the shock would arrive at 1 AU sometime after 23 UT 
on April 20.

MLK