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4-D Model of CO2 Deposition at North and South of Mars from HEND/Odyssey and MOLA/MGSThe first 1.5 year of neutron mapping measurements onboard Mars Odyssey spacecraft are presented based on High Energy Neutron Detector (HEND) observations. HEND instrument is a part of GRS suite responsible for registration of epithermal and fast neutrons originating in Mars subsurface layer. The scattering of fast neutrons in Mars surface caused by primary cosmic rays is strongly sensitive to presence of hydrogen atoms. Even several percents of subsurface water significantly depress epithermal and fast neutron flux. It turns orbit neutron spectroscopy into one of most efficient methods for finding distribution of subsurface water. The Mars Odyssey observations revealed huge water- ice regions above 60N and 60S latitudes. It was founded that distribution of subsurface water has layered structure at these regions. It is thought that more than 50% wt water ice covered by relatively dry layer with different thickness.
Document ID
20030066766
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
M L Litvak
(Space Research Institute Moscow, Russia)
I G Mitrofanov
(Space Research Institute Moscow, Russia)
A S Kozyrev
(Space Research Institute Moscow, Russia)
A B Sanin
(Space Research Institute Moscow, Russia)
V Tretyakov
(Space Research Institute Moscow, Russia)
D E Smith
(Goddard Space Flight Center Greenbelt, Maryland, United States)
M T Zuber
(Goddard Space Flight Center Greenbelt, Maryland, United States)
W V Boynton
(University of Arizona Tucson, Arizona, United States)
D K Hamara
(University of Arizona Tucson, Arizona, United States)
C Shinohara
(University of Arizona Tucson, Arizona, United States)
R S Saunders
(Jet Propulsion Lab La Cañada Flintridge, California, United States)
D Drake
(Los Alamos National Laboratory Los Alamos, New Mexico, United States)
Date Acquired
August 21, 2013
Publication Date
July 25, 2003
Publication Information
Publication: Sixth International Conference on Mars
Publisher: LPI
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
3040
Meeting Information
Meeting: Sixth International Conference on Mars
Location: Pasadena, CA
Country: US
Start Date: July 20, 2003
End Date: July 25, 2003
Sponsors: Lunar and Planetary Institute
Funding Number(s)
CONTRACT_GRANT: NCC5-679
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
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