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Gas Hydrate Stability at Low Temperatures and High Pressures with Applications to Mars and Europa
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Author and Affiliation:
Marion, G. M.(Desert Research Inst., Reno, NV, United States)
Kargel, J. S.(Geological Survey, Flagstaff, AZ, United States)
Catling, D. C.(Washington Univ., Seattle, WA, United States)
Abstract: Gas hydrates are implicated in the geochemical evolution of both Mars and Europa [1- 3]. Most models developed for gas hydrate chemistry are based on the statistical thermodynamic model of van der Waals and Platteeuw [4] with subsequent modifications [5-8]. None of these models are, however, state-of-the-art with respect to gas hydrate/electrolyte interactions, which is particularly important for planetary applications where solution chemistry may be very different from terrestrial seawater. The objectives of this work were to add gas (carbon dioxide and methane) hydrate chemistries into an electrolyte model parameterized for low temperatures and high pressures (the FREZCHEM model) and use the model to examine controls on gas hydrate chemistries for Mars and Europa.
Publication Date: Jan 01, 2004
Document ID:
20040061999
(Acquired May 18, 2004)
Subject Category: LUNAR AND PLANETARY SCIENCE AND EXPLORATION
Document Type: Conference Paper
Publication Information: SEE parent document record, "Lunar and Planetary Science XXXV: Outer Solar System"; LPI-Contrib-1197
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
NASA; Washington, DC, United States
Organization Source: Desert Research Inst.; Reno, NV, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution under U.S. Government purpose rights
NASA Terms: GAS TEMPERATURE; STABILITY; HYDRATES; MATHEMATICAL MODELS; THERMODYNAMICS; EUROPA; MARS (PLANET)
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