For various reasons including meteorite speed and cross section, plus radar scan patterns/rates, back scatter noise filtering software,etc. I don't believe the meteorite/meteoroid-proper is detected via doppler echos. Rather the train/cloud of silicate and iron oxide "fog" expanding to reach thermo-equilibrum in the cold atmosphere that mimics precipitation signatures.
Elton --- On Wed, 3/11/09, McCartney Taylor <[email protected]> wrote: > From: McCartney Taylor <[email protected]> > Subject: Re: [meteorite-list] Doppler radar signature from bolides > To: [email protected] > Date: Wednesday, March 11, 2009, 2:26 PM > Note that the stoney has a Specific gravity of 3.0 vs > water's 1.0. Indeed, it should have an excellent > reflection from radar. > > -mt > > > -------- Original Message -------- > > From: "E.P. Grondine" > <[email protected]> > > Sent: Wednesday, March 11, 2009 12:58 PM > > To: [email protected] > > Subject: [meteorite-list] Doppler radar signature from > bolides > > > > Hi - > > > > I wonder why such a small amount of material produced > such a large doppler > > signature. Anyone have any guesses? > > > > E.P. Grondine > > Man and Impact in the Americas > > > > > > > > ______________________________________________ > > http://www.meteoritecentral.com > > Meteorite-list mailing list > > [email protected] > > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
