Icy satellite geology and geophysics
Effects of interior structure on tidal deformation and surface stress
Effects of orbital dynamics on tidal stresses
Influence of tidal stresses on the formation of tectonics on icy satellites
Influence of tides in the eruptions of plumes on Enceladus' south polar regions
Positions and Appointments
Aug 2005 - Present Planetary Systems Laboratory NASA Goddard Space Flight Center
Aug 2005 - Aug 2008 NASA Postdoctoral Program Fellow Planetary Geodynamics Laboratory NASA Goddard Space Flight Center, Greenbelt, MD 20771
Aug 1998 - Aug 2005 Graduate Research Associate Prof. Richard Greenberg Planetary Sciences Dept., Univ. of Arizona, Tucson, AZ
Aug 1999 - May 2004 Teaching Assistant for 9 Semesters Planetary Sciences Dept., Univ. of Arizona, Tucson, AZ
May 1998 - Aug 1998 PIRL Support Assistant Univ. of Arizona, Tucson, AZ
Aug 1997 - May 1998 Undergraduate Research Assistant Prof. Richard Greenberg Planetary Sciences Dept., Univ. of Arizona, Tucson, AZ
Jan 1998 - May 1998 Undergraduate Teaching Assistant Astronomy Dept., Univ. of Arizona, Tucson, AZ
May 1997 - Aug 1997 Research Assistant Dr. Erik Asphaug NASA Ames Research Center, Moffett Field, CA
Aug 1996 - May 1998 Astronomy Peer Tutor Astronomy Dept., Univ. of Arizona, Tucson, AZ
May 1994 - May 1997 Undergraduate Research Assistant Prof. Richard Greenberg Planetary Sciences Dept., Univ. of Arizona, Tucson, AZ
August 1998 - August 2005 - Ph.D., Planetary Science, University of Arizona
August 1993 - May 1998 - B.S., Astronomy and Physics with Honors, University of Arizona
American Geophysical Union
American Astronomical Society - Division for Planetary Science
American Astronomical Society - Division on Dynamical Astronomy
Manuscript reviewer for Icarus and Nature
Involved with the Outer Planets Assessment Group (OPAG)
Mentor for USRP program during the fall of 2007
Mentor for The National Space Club Scholar Program during the summer of 2006, 2007
Event leader for the 2004 and 2005 Arizona state Science Olympiad competitions
Science fair judge for Tucson High School, 2000
Science fair judge for Nalor Middle School, 1999 and 2000
NASA Postdoctoral Program Fellowship, 2005
Graduate Teaching Award, Planetary Sciences Department, University of Arizona, 2005
IAU, Travel Grant, 2002
Division for Dynamical Astronomy, Travel Grant, 2001
Outstanding Achievement in Undergraduate Research, Department of Astronomy, 1998
Andrew E. Douglas Scholarship, Department of Astronomy, 1997-1998
Glenn C. Purviance Scholarship, Department of Astronomy, 1997-1998
William F. Lucas Scholarship, Department of Asronomy, 1996-1997
Glenn C. Purviance Scholarship, Department of Astronomy, 1995-1996
NASA Space Grant, 1995-1996
Honor Center Undergraduate Research Scholarship, Honors Department, 1994-1995
2007 "Eruptions arising from tidally controlled periodic openings of rifts on Enceladus." Hurford, T.A., P. Helfenstein, G.V. Hoppa, R. Greenberg and B.G. Bills, Nature, 447, 292-294.
2007 "Cycloidal cracks on Europa: Improved modeling and rotation implications." Hurford, T.A., A.R. Sarid and R. Greenberg, Icarus, 186, 218-233.
2006 "Crack azimuths on Europa: Sequencing of the northern leading hemisphere." Sarid, A.R., R. Greenberg and T.A. Hurford, Jour. Geophys. Res. 111, E10,8004.
2005 "Flexure of Europa's lithosphere due to ridge-loading." Hurford, T.A., R.A. Beyer, B. Schmidt, B. Preblich, A.R. Sarid, R. Greenberg, Icarus , 177, 380-396.
2005 "Tides and Tidal Stress: Applications to Europa", Hurford, T.A., Ph.D. Thesis, University of Arizona.
2003 "Tidal Stress Patterns on Europa's Crust." Greenberg, Richard, G.V. Hoppa, G. Bart and T.A. Hurford, Celestial Mechanics and Dynamical Astronomy, 87, Issue 1.
2002 "Polar Wander and Surface Convergence of Europa's Ice Shell: Evidence from a Survey of Strike-Slip Displacement." Alyssa, S.R., R. Greenberg, G.V. Hoppa, T.A. Hurford, B.R. Tufts and P. Geissler, Icarus, 158, 24-41.
2001 "Europa's Rate of Rotation Derived from the Tectonic Sequence in the Astypalaea Region." Hoppa, Gregory V., B. Randall Tufts, Richard Greenberg, Icarus, 153 208-213.
2000 "Tidal Evolution of Elongated Primaries: Implications for the Ida/Dactyl System." Hurford, T.A. and R. Greenberg, GRL 27, 1595-1598.
1997 "The long-term dynamics of Dactyl's orbit." Petit, J.-M., D. D. Durda, R. Greenberg, T. A. Hurford, and P. E. Geissler, Icarus, 130, 177-197.