That's supposed to be NNE, not NEN. SSE instead of SES, too. duh
On 4/1/09 11:40 AM, "Fries, Marc D" <[email protected]> wrote: > Howdy ladies and gents > > I have looked over the radar data from the VA Beach fireball this past > Sunday (I¹m calling it VA Beach because that was the location of the closest > eyewitness). I believe there is a consistent debris trail in the data. > This track in the data evolves over a forty minute period and trends towards > the ESE, while all the clouds in the radar data move in a ENE to NEN > direction. Either the debris was generated below the jet stream or we > over-estimated the effects of the jet stream, but that is something for me > to figure out later on. > > Here is my data from that meteor. Click on each image for a > description: > > http://s653.photobucket.com/albums/uu251/mfries/ > > The available eyewitnesses converge well as to the direction of the > fireball. Note that the VA Beach astronomers estimate the distance the > last radar return is only 20 km removed from their estimate. The debris > trail appears mostly over the Chesapeake, but the farthest downrange portion > crosses the Delmarva peninsula near the town of Johnsontown. The western > end of the track (i.e. the first radar data to appear) also appears over > land (just barely) near Stingray Point, VA. Note that this is uncorrected > for wind drift. Surface winds were out of the SES at 5mph with 20 mpg gusts > (from Norfolk, VA met data), and I placed a crude correction of 3.3 mi on my > Google Earth image (5mph over 40 minutes after the fireball reports). > Basically, the position of the debris cloud should indicate a northeastern > limit for the actual position of fallen meteorites. > > My brother hasn¹t had a chance to look this over yet; I¹m jumping ahead > of him a bit because I¹m reasonably convinced that I¹m looking at a meteor > trace in the data. > > Disclaimer: Be advised that this information comes with no guarantees of > any kind and represents my interpretation only. This is provided for > information purposes only, and neither I nor JPL assume liability for costs > and/or personal harm that may arise from personal decisions based on this > information. > > Cheers, > MDF > > ______________________________________________ > 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
