Gary Hansen
  Research Assistant Professor
  Office: ATG-164
     ESS Mailing Address
  Phone: 206-685-8264
  Fax: 206-543-0489 (shared)
  Email: ghansen @ ess.washington.edu
  Homepage:

  Research Groups: Planetary Sciences, Remote Sensing, Planetary Surfaces

Areas of Interest:
Planetary Remote Sensing; Optical Properties of Materials; Calibration of remote sensing instruments

Education:
Ph.D. : Geophysics, University of Washington, 1996
M.S. : Aeronautics and Astronautics, University 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., 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., 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.

Hansen, G. B.(2009), Calculation of single-scattering albedos: Comparison of
Mie  results with Hapke approximations, Icarus, 203, 672-676,
doi:10.1016/j.icarus.2009.05.025.

Hansen, G. B., (2013), An examination of Mars’ north seasonal polar cap using MGS: Composition and infrared radiation balance, Icarus, doi: 10.1016/j.icarus.2013.02.019.