[meteorite-list] Earth Impactors
From: Walter Branch <branchw_at_meteoritecentral.com>
Date: Thu Apr 22 10:00:10 2004 Message-ID: <00aa01c23380$dabf5d40$66de3fd0_at_cc516468a> This is a multi-part message in MIME format. ------=_NextPart_000_00A7_01C2335F.538C2B80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Everyone, I have been asked a question for which I have no answer. =20 "how large does an object have to be for it not to vaporize completely = upon plunging through Earth's atmosphere, i.e., for there to be anything sizeable left to cause wide destruction once it hits the = ground (or water)?" I know that the answer is not an easy one and there are numerous = variables involved (e.g., type of material involved, angle of entry, = definition of "wide destruction," etc.) but does anyone have a guess (or = a SWAG) as to the answer. -Walter ----------------------------------------------- Walter Branch, Ph.D. Branch Meteorites 322 Stephenson Ave., Suite B Savannah, GA 31405 USA www.branchmeteorites.com ------=_NextPart_000_00A7_01C2335F.538C2B80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2716.2200" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Hello Everyone,</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>I have been asked a question for which = I have no=20 answer. </FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT size=3D2><FONT face=3D"Courier New">"how large does an object = have to be=20 for it not to vaporize completely upon plunging through Earth's = atmosphere,=20 i.e., for there<BR>to be anything sizeable left to cause wide = destruction once=20 it hits the ground (or water)?"</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT face=3D"Courier = New"></FONT></FONT> </DIV> <DIV><FONT size=3D2><FONT face=3D"Courier New">I know that the answer is = not an easy=20 one and there are numerous variables involved (e.g., type of material = involved,=20 angle of entry, definition of "wide destruction," etc.) but does anyone = have a=20 guess (or a SWAG) as to the answer.</FONT></FONT></DIV> <DIV><FONT size=3D2><FONT face=3D"Courier = New"></FONT></FONT> </DIV> <DIV><FONT size=3D2><FONT face=3D"Courier New">-Walter</FONT></DIV> <DIV><BR></DIV></FONT> <DIV><FONT face=3DArial=20 size=3D2><BR>-----------------------------------------------<BR>Walter = Branch,=20 Ph.D.<BR>Branch Meteorites<BR>322 Stephenson Ave., Suite B<BR>Savannah, = GA =20 31405 USA<BR><A=20 href=3D"http://www.branchmeteorites.com">www.branchmeteorites.com</A></FO= NT></DIV></BODY></HTML> ------=_NextPart_000_00A7_01C2335F.538C2B80-- Received on Wed 24 Jul 2002 10:13:23 PM PDT |
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