Publication
Names
  • W. Grundy
  • B. Schmitt
Title
The temperature-dependent near-infrared absorption spectrum of hexagonal H2O ice
Abstract
Transmission spectra were measured between 1.0 and 2.7 μm for monocrystalline samples of hexagonal water ice at temperatures between 20 and 270 K. Samples were crystallized from liquid water within closed cells, with thicknesses ranging from 100 μm to 1.0 cm. The absorption spectrum of ice changes with temperature in several ways. With higher temperature, the shapes of absorption bands become more smoothed, the strengths of some absorption bands decrease, the absorption in continuum wavelengths increases, and the band centers of some absorption bands shift to shorter wavelengths. In this paper we present the new absorption coefficient spectra along with an examination of the different temperature effects. These data should prove extremely valuable for analysis of near-infrared reflectance spectra of low-temperature icy surfaces, such as those of outer solar system satellites, Kuiper Belt objects, Pluto and Charon, comet nuclei, the polar caps of Mars, and terrestrial snow-and ice-covered regions. The data may also be of value in simulating radiative transfer in clouds of ice particles in the atmospheres of planets.
Keywords
spectroscopy, transmission, absorption coefficient spectra, band position, band width, band intensity, band integrated intensity, near-IR, thermal process, molecular solid, ice, snow, H2O, icy satellites, comet nucleus, Mars, Earth, Pluto, TNO
Content
instrument-technique, sample, spectral data, band list data, planetary sciences, earth sciences
Year
1998
Journal
Journal of Geophysical Research - Planets
Volume
103
Number
E11
Pages
25809 - 25822
Pages number
14
Document type
article
Publication state
published
Experiment/Spectra