Thermal Infrared Feature
Regions on a planetary surface which show different thermal infrared emission parameters than their surroundings. Thermal infrared features could also be identified in the atmosphere, e.g., different temperature cloud layers or other confined cloud units, or in aquatic bodies. Note that the term “thermal feature” is not used in the literature, we use it as an analog of albedo and radar features.
Thermal inertia features: regions where the ability of the surface material to resist a temperature change is different from its surrounding. “Thermal inertia introduces a lag time between absorption and reradiation of solar radiation. Thermal inertia depends predominantly on regolith particle size and depth, degree of compaction, and exposure of solid rocks and boulders within the top few centimeters of the subsurface” (Rozitis and Green 2011).
KeywordsDust Radar Compaction Boulder
- Lagerros JSV (1996) Thermal physics of asteroids. I. Effects of shape, heat conduction and beaming. Astronom Astrophy 310:1011–1020Google Scholar
- Lopes RMC, Kamp LW, Smythe WD, Mouginis-Mark P, Kargel J, Radebaugh J, Turtle EP, Perry J, Williams DA, Carlson RW, Douté S, The Galileo NIMS and SSI Teams (2004) Lava lakes on Io: observations of Io’s volcanic activity from Galileo NIMS during the 2001 fly-bys. Icarus 169:140–174CrossRefGoogle Scholar
- Lopes RMC, Radebaugh J, Meiner M, Perry J, Marchis F (2007) Appendix 1: Io’s hot spots. In: Lopes RMC, Spencer JR (eds) Io after Galileo: a new view of Jupiter’s volcanic moon. Springer, Berlin/Heidelberg/New York, p 307Google Scholar