Physics
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.9433t&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Aug. 20, 1988, p. 9433-9451.
Physics
65
Atmospheric Pressure, Dust Storms, Mars Atmosphere, Transient Oscillations, Viking Lander Spacecraft, Annual Variations, Carbon Dioxide, Data Processing, Spectrum Analysis
Scientific paper
Observations and analyses of the atmospheric pressure at the surface on Mars for several Martian years has led to the discovery of transient events in the daily pressure variations of an unusual nature. These events last only a few sols (Mars days), appear to repeat on an annual basis to within a few sols, appear to cover a large portion of the hemisphere on the same sol or at least within a few sols, occur in pairs with separations of 20 sols in some instances, are coincident with the annual pressure minimum (i.e., the maximum concentration of carbon dioxide in the southern hemisphere), and consist of spectral components near to, and sometimes identical in, frequency to the diurnal and semidiurnal harmonics. It is suggested that these events are Kelvin, normal-mode, transient, global oscillations.
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