Long-term observations of southern winters on Mars: Estimations of column thickness, mass, and volume density of the seasonal CO2deposit from HEND/Odyssey data
| Autor: | I. G. Mitrofanov, M. L. Litvak, N. J. Kelly, R. S. Saunders, William V. Boynton, V. I. Tretyakov, D. K. Hamara, Anton Sanin, A. S. Kozyrev |
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| Rok vydání: | 2007 |
| Předmět: |
Atmospheric Science
Meteorology Soil Science Aquatic Science Oceanography Atmospheric sciences Mola Geochemistry and Petrology Neutron flux Earth and Planetary Sciences (miscellaneous) Range (statistics) Earth-Surface Processes Water Science and Technology Martian Ecology biology Paleontology Forestry Mars Exploration Program biology.organism_classification Snow Neutron spectroscopy Geophysics Space and Planetary Science Frost Geology |
| Zdroj: | Journal of Geophysical Research. 112 |
| ISSN: | 0148-0227 |
| Popis: | [1] In this paper, we have analyzed neutron spectroscopy data gathered by the High Energy Neutron Detector (HEND) instrument on board Mars Odyssey for two Martian years of orbital mapping. We focused on the observations of the Martian southern seasonal cap for this period of time. Nuclear methods based on numerical modeling allow us to derive an estimation of the distribution of CO2 frost column density and mass from the temporal variations of neutron flux between summer and winter seasons. We have estimated the seasonal behavior of both the column density and mass of CO2 frost. Comparison between two Martian years revealed minor ( |
| Databáze: | OpenAIRE |
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