Short Biography
Gary Hansen
Research Assistant Professor
Office: ATG-164
ESS Mailing Address
Phone: 206-685-8264
Fax: 206-543-0489 (shared)
E-Mail: ghansen @ ess.washington.edu
Homepage:
Research Groups: Planetary Sciences, Remote Sensing, Planetary Surfaces
Areas of Interest:
Planetary Remote Sensing; Optical Properties of Materials
Education:
Ph.D. : Geophysics, University of Washington, 1996
M.S. : Aeronautics and Astronautics, Unoversity of Washington, 1986
UG : California Institute of Technology
Current Research Interests:
I am studying the composition of various planetary surfaces by modeling their remotely measured spectra over a broad wavelength range. My current work involves near infrared spectra of the Galilean satellites of Jupiter and the icy satellites of Saturn. I have also recently studied the polar cap composition of Mars using both near- and thermal-infrared measurements.
Part of this analysis includes the consturction of radiative transfer models, including the derivation of optical constants of constituents through experimental data.
Selected Publications:
Hansen, G.B. (1997). The infrared absorption spectrum of carbon dioxide ice from 1.8 to 333 um, J. Geophys. Res., 102, 21,569-21,587.
Hansen, G. B. (1999). Control of the radiative properties of the Martian polar caps by surface CO2 ice: Evidence from Mars Global Surveyor measurements, J. Geophys. Res., 104, 16,471- 16,486.
Hansen, G. B., and T. B. McCord (2004). Amorphous and crystalline ice on the Galilean satellites:A balance between thermal and radiolytic processes, J. Geophys. Res., 109, E01012, doi: 10.1029/2003JE002149.
Hansen, G. B. (2005). Ultraviolet to near-infrared absorption spectrum of carbon dioxide ice from 0.174 to 1.8 um, J. Geophys. Res., 110, E11003, doi:10.1029/2005JE002531.
Hansen, G. B., M. Giuranna, V. Formisano, S. Fonti, D. Grassi, H. Hirsh, N. Ignatiev, A. Maturilli, P. Orleanski, G. Piccioni, M. Rataj, B.Saggin, L. Zasova (2005). PFS - MEX Observation of Ices in the Residual South Polar Cap of Mars, Planetary and Space Science, 53, 1089- 1095, doi: 10.1016/j.pss.2004.12.011.
Hansen, G. B., and T. B. McCord (2008). Widespread CO2 and other non-ice compounds on the anti-Jovian and trailing sides of Europa from Galileo/NIMS observations, Geophys. Res. Lett., 35, L01202, doi: 10.1029/2007GL031748.