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  • 1
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    Mars global atmospheric oscillations: Transients and dust storm relations (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: It is showed that periods of enhanced quasitidal pressure oscillations occur during the season preceding the global dust storm season during every Martian year. Periods of these oscillations often differ slightly from the diurnal and semidiurnal, and the oscillations may correspond to atmospheric normal modes excited by solar heating. They may also contribute to the initiation of some global dust storms.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst., MECA Symposium on Mars: Evolution of its Climate and Atmosphere; p 113
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Lunar placement of Mars quarantine facility (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Advanced mission scenarios are currently being contemplated that would call for the retrieval of surface samples from Mars, from a comet, and from other places in the solar system. An important consideration for all of these sample return missions is quarantine. Quarantine facilities on the Moon offer unique advantages over other locations. The Moon offers gravity, distance, and vacuum. It is sufficiently near the Earth to allow rapid resupply and easy communication. It is sufficiently distant to lessen the psychological impact of a quarantine facility on Earth's human inhabitants. Finally, the Moon is airless, and seems to be devoid of life. It is, therefore, more suited to contamination control efforts.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst., Workshop on Mars Sample Return Science; p 62
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Mars global atmospheric oscillations - Annually synchronized, transient normal-mode oscillations and the triggering of global dust storms (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Transient events of an unusual character have been discovered in the daily pressure variations of the Mars atmosphere's pressure at the planetary surface which last only a few Martian days, appear to repeat on an annual basis, cover a large part of the given day's hemisphere, occur in pairs separated by 20-days in some cases, and coincide with the annual pressure minimum. They also consist of spectral components nearly identical in frequency with diurnal and semidiurnal harmonics. It is presently suggested that these events are Kelvin, normal-mode, transient, global oscillations. An almost-diurnal and an almost-semidiurnal high-frequency global oscillation distinct from solar-driven tides may be common on Mars.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 9433-945
    Format: text
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    NASA TECHNICAL REPORTS
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