PSN-L Email List Message

Subject: Re: Satellite re-entry to Seismic record
From: Ken Navarre kjn@..........
Date: Mon, 31 Jan 2000 09:10:29 -0800 (PST)

On Sat, 29 Jan 2000 ajbv@............ wrote:
> Apparently the object disintegrated in "mid-air" over the sea
> approximately north of Kunnunura (near the border with the Northern
> Territory). It was seen by people spread out about 2,000km across the
> state. This is very unusual for a meteor as it suggests a 'grazing'
> trajectory. We believe it was the entry of the  Molniya 1-67, a Russian
> communications satellite that was launched in 1986.

Was there a sonic boom associated with the reentry event?  If so, the 
"noise" you described could be related to that.  Several years ago when 
"AREA 51" in Nevada was an active source of classified aerial activity 
southern California seismometers tracked several events that 
seemed to be associated with high altitude sonic booms headed from 
out over the Pacific and flying toward the Nellis Test facility in 
the Nevada desert.  The booms left a "seismic footprint" across the 
seismic network.  I recall some work being done to determine the altitude 
and direction of travel of the aircraft that produced the sonic booms.  
There were several events like this that occurred over several months. 
No one stepped forward to claim responsibility and it was assumed that 
the booms resulted from the operation of some classified project at the 
test site.

Ken Navarre  


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Larry Cochrane <cochrane@..............>