[meteorite-list] Portales Valley and PF SF's
From: Mark Jackson <chaositymeteoritics_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:02 2004 Message-ID: <20031220081108.14440.qmail_at_web11708.mail.yahoo.com> --0-1927123438-1071907868=:12821 Content-Type: text/plain; charset=us-ascii Rex and List, That's an interesting point Rex. I have seen that effect. One of my theories about Park Forest had been that it may have been a multi-stage breakup followed by a detonating main mass. Once breakoff pieces separate, they immediately lose energy to the process of seeking aerodynamic equilibrium, thus falling behind the main mass. When the main mass detonates and sends out an omnidirectional shockwave, the followon breakoff fragments collide with the shockwave causing them to be redirected. This would quite nearly mimic the effect you are describing. Rob Matson has programmed re-entry software that he attempted to apply to the PF event to see if he could come close to predicting the SF pattern. He was able to nail it right on by entering the upper level winds into the scenario along with approximated initial mass and cosmic velocities. I was convinced by that analysis of how much winds could bend SF patterns. I would like to play around with such a program to gauge the differences made by changes in those parameters. Mark Jackson Chaosity Meteoritics chaositymeteoritics_at_yahoo.com --------------------------------- Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing --0-1927123438-1071907868=:12821 Content-Type: text/html; charset=us-ascii <DIV>Rex and List,</DIV> <DIV> </DIV> <DIV>That's an interesting point Rex. I have seen that effect. One of my theories about Park Forest had been that it may have been a multi-stage breakup followed by a detonating main mass. Once breakoff pieces separate, they immediately lose energy to the process of seeking aerodynamic equilibrium, thus falling behind the main mass. When the main mass detonates and sends out an omnidirectional shockwave, the followon breakoff fragments collide with the shockwave causing them to be redirected. This would quite nearly mimic the effect you are describing.</DIV> <DIV> </DIV> <DIV>Rob Matson has programmed re-entry software that he attempted to apply to the PF event to see if he could come close to predicting the SF pattern. He was able to nail it right on by entering the upper level winds into the scenario along with approximated initial mass and cosmic velocities. I was convinced by that analysis of how much winds could bend SF patterns. I would like to play around with such a program to gauge the differences made by changes in those parameters.</DIV><BR><BR><DIV><FONT face="comic sans ms" color=#c00000 size=5><EM>Mark Jackson</EM></FONT></DIV> <DIV><FONT face=verdana>Chaosity Meteoritics</FONT></DIV> <DIV><FONT face="Arial Narrow" color=#438059 size=3><A href="mailto:chaositymeteoritics_at_yahoo.com">chaositymeteoritics@yahoo.com</A></FONT></DIV> <DIV> </DIV><p><hr SIZE=1> Do you Yahoo!?<br> <a href="http://pa.yahoo.com/*http://us.rd.yahoo.com/evt=21260/*http://photos.yahoo.com">New Yahoo! Photos - easier uploading and sharing</a> --0-1927123438-1071907868=:12821-- Received on Sat 20 Dec 2003 03:11:08 AM PST |
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