Clathrate hydrates are unique geologic materials, which store gases within a solid crystalline water structure at low temperature and moderate to high pressure conditions that are common throughout the outer Solar System. We use experiments and models to study how these phases form and understand how they affect planetary processes.
Publications
CO2 hydrate formation and dissociation rates: Application to Mars
Dan Ambuehl, Megan Elwood Madden
Icarus, vol. 234, Academic Press, 2014, pp. 45--52
Kinetics of methane clathrate formation and dissociation under Mars relevant conditions
SR Gainey, ME Elwood Madden
Icarus, vol. 218, Academic Press, 2012, pp. 513--524
Potential effects of obliquity change on gas hydrate stability zones on Mars
Margaret J Root, Megan E Elwood Madden
Icarus, vol. 218, Academic Press, 2012, pp. 534--544
Reduced sulfur--carbon--water systems on Mars may yield shallow methane hydrate reservoirs
ME Elwood Madden, JR Leeman, MJ Root, S Gainey
Planetary and Space Science, vol. 59, Pergamon, 2011, pp. 203--206
Fiber optic sensing technology for detecting gas hydrate formation and decomposition
Claudia J Rawn, John R Leeman, Shannon M Ulrich, Jonathan E Alford, Tommy Joe Phelps, Megan Elwood Madden
Review of Scientific Instruments, vol. 82, AIP Publishing, 2011
Megan Elwood Madden, Shannon Ulrich, Phillip Szymcek, Scott McCallum, Tommy Phelps
Marine and Petroleum Geology, vol. 26, Elsevier, 2009, pp. 369--378
Salinity-induced hydrate dissociation: A mechanism for recent CH4 release on Mars
ME Elwood Madden, Shannon M Ulrich, TC Onstott, Tommy Joe Phelps
Geophysical research letters, vol. 34, 2007