Thomas J Ahrens Professor of Geophysics at Caltech who is known for his study of the terrestrial planets and impact processes on planetary surfaces.

Contents 1 Positions held 2 Education 3 Awards 4 References

[edit] Positions held

Geophysicist, Pan American Petroleum Corporation, 1958-59

Second Lieutenant, U.S. Army, Ballistics Research Laboratory, 1959-60

Geophysicist, Head Geophysics Section, Poulter Laboratory, Stanford Research Institute, 1962-67. He was hired and worked for Thomas Poulter. ^[1]

Associate Professor of Geophysics, Caltech, 1967-76; Professor, 1976-2004; W. M. Keck Foundation Professor of Earth Sciences, 1996-2001; Jones Professor, 2004-05; Jones Professor Emeritus, 2005-. ^[2]

[edit] Education

B.S., Massachusetts Institute of Technology, 1957; M.S., Caltech, 1958; Ph.D., Rensselaer Polytechnic Institute, 1962.

[edit] Awards

Awarded the AAAS Newcomb Cleveland Prize in 1984 along with co-authors Sally M. Rigden and Edward M. Stolper for a report "Densities of Liquid Silicates at High Pressures," Science 30 November 1984. ^[3]

Elected to the National Academy of Sciences in 1992 ^[4]

He received the Harry H. Hess Award in 1996 ^[1]

[edit] References

1. ^ ^{a b} Ahrens Receives 1996 Harry H. Hess Medal http://www.agu.org/inside/awards/bios/ahrens_thomasj.html
2. ^ Caltech Bio http://www.gps.caltech.edu/people/tja/profile
3. ^ American Association for the Advancement of Science (AAAS) http://archives.aaas.org/people.php?p_id=431
4. ^ http://www.nasonline.org/site/Dir/96413405?pg=rslts