[meteorite-list] Park Forest predicted strewnfield map

From: Matson, Robert <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Thu Apr 22 10:16:29 2004
Message-ID: <AF564D2B9D91D411B9FE00508BF1C86901B4EC21_at_US-Torrance.mail.saic.com>

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Hi Mark,
 
> Robert,
> Here are the details of my recent PF finds:
 
Find #1 Coordinates 41.49398 N, -87.67649 W; July 30, 2003
            Norwood Square Shopping Center, Park Forest IL, 60466
            60 grams; 30% crust at best; deeply cracked; 1.25x1.25x1.5
 
Find #2 Coordinates 41.49632 N, -87.67601 W; July 30, 2003
             South Street, Park Forest IL, 60466
             75 grams; 90% crust; black soot on 40%; 2.5x1.25x1.5
 
Thanks for forwarding me your latest find coordinates! I was pleased to
discover that
they both fall right on my predicted impact line, though in a slightly
heavier region of
it (~500-gram). This minor discrepancy could easily be explained if your
fragments
broke off something heavier at relatively low altitude (< 20 km).
 
> I have given these to Atul as well for inclusion in his strewn field map.
 
If Atul is the keeper of a "master map" with lots of find coordinates on it,
then he
would probably be interested in seeing one of my predicted maps to see how
well it matches up (and to determine if there are promising areas on my plot
that have not been searched well). Ideally, my modeling input parameters
(jet stream velocity & direction, break-up altitude(s)) should be tweaked
until
the best possible fit is achieved to the known finds. Then it would be
interesting
to explore areas indicated by the resulting plot that haven't been searched.
 
--Rob

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<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>Hi
Mark,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT>&nbsp;</DIV>
<DIV><SPAN class=499372304-05082003>
<DIV><FONT size=2><FONT color=#0000ff><FONT face=Arial><SPAN
class=499372304-05082003>&gt; </SPAN>Robert,</FONT></FONT></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>&gt;
</SPAN></FONT><FONT color=#0000ff face=Arial size=2>Here are the details of my
recent PF finds:</FONT></DIV>
<DIV>
<DIV><STRONG></STRONG><FONT color=#0000ff face=Arial size=2>&nbsp;</FONT></DIV>
<DIV><FONT size=2><FONT color=#0000ff><FONT face=Arial><STRONG>Find #1</STRONG>
Coordinates 41.49398 N, -87.67649 W; July 30, 2003</FONT></FONT></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Norwood
Square Shopping Center, Park Forest IL, 60466</FONT></DIV>
<DIV><FONT color=#0000ff face=Arial
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60
grams; 30% crust at best; deeply cracked; 1.25x1.25x1.5</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT size=2><FONT color=#0000ff><FONT face=Arial><STRONG>Find #2
</STRONG>Coordinates 41.49632 N, -87.67601 W; July 30,
2003</FONT></FONT></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
South Street, Park Forest IL, 60466</FONT></DIV>
<DIV><FONT color=#0000ff face=Arial
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
75 grams; 90% crust; black soot on 40%; 2.5x1.25x1.5</FONT></DIV></SPAN><FONT
color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT></DIV></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>Thanks
for forwarding me your latest find coordinates!&nbsp; I was pleased to discover
that</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>they
both fall right on my predicted impact line, though in a slightly heavier region
of</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>it
(~500-gram).&nbsp; This minor discrepancy could easily be explained if your
fragments</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>broke
off something </SPAN></FONT><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003>heavier at relatively low altitude (&lt; 20
km).</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>&gt;
</SPAN></FONT>I have given these to Atul as well for inclusion in his strewn
field map.<FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003>&nbsp;</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>If
Atul is the keeper of a "master map" with lots of find coordinates on it, then
he</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>would
probably be interested in seeing&nbsp;one of my predicted maps to see
how</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>well
it matches up (and to determine if there are promising areas on my
plot</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003>that&nbsp;have not been </SPAN></FONT><FONT
color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>searched
well).&nbsp; Ideally, my modeling input parameters</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>(jet
stream velocity &amp; direction, break-up altitude(s)) should be tweaked
until</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>the
best possible fit is achieved to the known finds.&nbsp; Then it would be
interesting</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=499372304-05082003>to
explore areas indicated </SPAN></FONT><FONT color=#0000ff face=Arial
size=2><SPAN class=499372304-05082003>by the resulting plot that haven't
been&nbsp;searched.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=499372304-05082003>--Rob</SPAN></FONT></DIV></BODY></HTML>

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Received on Tue 05 Aug 2003 12:34:33 AM PDT


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