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H2O-Silicate Microphysics in Ascending Volcanic Plumes on MarsWe begin this study with a simple investigation of the role of the particle size frequency distribution on adsorptive scavenging in the ascending cloud. We define a parcel of silicates and H2O, and allow that parcel to cool, monitoring the total H2O remaining in the vapor phase. In this case, we have defined 10(exp 7) kg of silicates in the test volume, with a log-normal size-frequency distribution, a mean grain size of 10(exp -5) m, and a minimum of 10(exp -6) square meters per particle. This is based on observations of terrestrial ash particles that reveal enormous internal surface area. We assume 10(exp 5) kg of H2O (approximately equal to 1 wt%). The results of this study show significant dependence of the H2O sequestered in the adsorbed phase.
Document ID
Acquisition Source
Document Type
Conference Paper
Zent, A. P.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Lunar and Planetary Science XXXIV
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public Use Permitted.
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