Wednesday, March 13, 2002, 6 PM “Understanding Meteoroids and Meteoroid Plasma Regions Detected with RADAR” by Sigrid Close, MIT Lincoln Laboratory As a technical staff member in the Space Surveillance Group at MIT Lincoln Laboratory, Sigrid Close performs meteor research, ionospheric modeling and analysis, and orbit determination for Space Command. She has a B.S. in physics and astronomy from the University of Rochester and an M.S. in physics from the University of Texas at Austin where her thesis included the analysis of gravity waves and traveling ionospheric disturbances. Currently she is finishing her Ph.D. in space physics at Boston University where her research involves the analysis and modeling of meteoroid interactions with the earth's atmosphere. Sigrid is a member of the International Union of Radio Science and is currently heading up the meteor research program with NASA in order to assess the meteoroid hazard to the International Space Station as well as other space assets. ace Surveillance Group at MIT Lincoln Laboratory, Sigrid Close performs meteor research, ionospheric modeling and analysis, and orbit determination for Space Command. She has a B.S. in physics and astronomy from the University of Rochester and an M.S. in event is sponsored by the Women inphysics Engineering Program andat from the University of Texas Austin where her thesis included the the UMass Chapter of the Society of Women Engineers. analysis of gravity waves and traveling ionospheric disturbances. Currently she is finishing her Ph.D. in space physics at Boston University where her research involves the analysis and modeling of meteoroid interactions with the earth's Join us in the Gunness Engineering Student Center Marcus Hall University of Massachusetts Amherst This