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Thirtieth Annual Summer Intern Conference Papers Presented at the Thirtieth Annual Summer Intern Conference August 7, 2014 Houston, Texas 2014 Summer Intern Program for Undergraduates Lunar and Planetary Institute Sponsored by Lunar and Planetary Institute NASA Johnson Space Center Compiled in 2014 by Meeting and Publication Services Lunar and Planetary Institute USRA Houston 3600 Bay Area Boulevard, Houston TX 77058-1113 The Lunar and Planetary Institute is operated by the Universities Space Research Association under a cooperative agreement with the Science Mission Directorate of the National Aeronautics and Space Administration. Any opinions, findings, and conclusions or recommendations expressed in this volume are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration. Material in this volume may be copied without restraint for library, abstract service, education, or personal research purposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as the appropriate acknowledgment of this publication. HIGHLIGHTS Special Activities June 2, 2014 Lunar Curatorial and Stardust Lab Tour NASA JSC June 12, 2014 Grant Writers Seminar and Workshop USRA June 19, 2014 USRA Summer Intern BBQ USRA July 20, 2014 Nutritional Biochemistry Lab Tour NASA JSC July 25, 2014 Meteorite Lab Tour NASA JSC LPI Summer Intern Program 2014 – Brown Bag Seminars Wednesdays, 12:00 noon – 1:00 p.m., Lunar and Planetary Institute Date Speaker Topic Location June 4, 2014 David Mittelfehldt Asteroid 4 Vesta: A Mini-Planet Hess Conference Room June 11, 2014 John Jones Shergottite Meteorites Site Hess Conference Room June 18, 2014 Julianne Moses Characterizing the Atmospheres Hess Conference Room of Extrasolar Planets June 25, 2014 Mike Zolensky Early Solar System Hess Conference Room Cryovolcanics in the Lab July 2, 2014 Interns Mid-Term Reports Hess Conference Room July 9, 2014 Walter Kiefer GRAIL Explores the Moon Hess Conference Room July 16, 2014 Stephanie Shipp Taking Your Science to the Public: Hess Conference Room Making the Most of Education and Community Engagement Opportunities July 14, 2014 Astronaut Don R. Pettit Tyranny of the Rocket Equation Lecture Hall July 30, 2014 Virgil Sharpton Impact Cratering Hess Conference Room August 6, 2014 Paul Spudis America’s Civil Space Program: Hess Conference Room What It Was, What It Is and What It Should Be LPI Summer Intern Tag Up and Science Fiction Film Series Wednesdays, 6:30 p.m., Lunar and Planetary Institute Date Title Location June 17, 2014 Europa Report Hess Conference Room July 1, 2014 Moon Hess Conference Room July 8, 2014 Fish Story Hess Conference Room July 14, 2014 The Core Hess Conference Room July 22, 2014 2001: A Space Odyssey Hess Conference Room July 29, 2014 Blade Runner Hess Conference Room August 5, 2014 They Live Hess Conference Room AGENDA 8:00 a.m. BREAKFAST 8:25 a.m. Introductory Remarks by Drs. Stephen Mackwell, Paul Spudis, and David Mittlefehldt 8:30 a.m. ELEANOR ARMSTRONG, University of Oxford (Advisor: Julianne Moses) Stratospheric Chemistry in Saturn's Atmosphere During the Beacon Storm [#1004] 8:50 a.m. STEVEN DIBB, University of California Santa Cruz (Advisor: Walter Kiefer) The Depth-Diameter Relationship for Large Lunar Impact Basins and the Implications for Mare Basalt Thickness [#1012] 9:10 a.m. STEFAN FARSANG, University of St. Andrews (Advisors: David Kring and Amy Fagan) LL-Chondrite LAR 12325: A Product of an Asteroid Impact Cratering Event [#1010] 9:30 a.m. ALLISON FOX, Indiana University (Advisors: Paul Niles and Brad Sutter) Effect of Sulfur Concentration and pH Conditions on Akaganeite Formation [#1005] 9:50 a.m. BENJAMIN GO, University of Chicago (Advisors: Kevin Righter and Lisa Danielson) Experiments on Lunar Core Composition: Phase Equilibrium Analysis of a Multi-Element (Fe-Ni-S-C) System [#1001] 10:10 a.m. TIMOTHY GREGORY, University of Manchester (Advisors: Michael Zolensky and Allan Treiman) Lithologies Making up CM Carbonaceous Chondrites and Their Link to Space Exposure Ages, and a Study of What CV and R Chondrite Regolith Breccias can tell us About Asteroid Surface Processes [#1003] 10:30 a.m. BREAK 10:40 a.m. ELISE HARRINGTON, Simon Fraser University (Advisor: Allan Treiman) Venus Highlands: Radar Reflectance and Elevation at High Spatial Resolution on Ovda Regio and Maxwell Montes [#1009] 11:00 a.m. MOLLY JOHNSON, Winona State University (Advisor: Virgil “Buck” Sharpton) Structural Mapping of Martin Crater Uplift to Test Acoustic Fluidization Models [#1008] 11:20 a.m. KAITLYN McCAIN, University of Chicago (Advisor: Justin Simon) Broad Size Distributions Found Among Distinct Particle Classes Contained in Allende [#1011] 11:40 a.m. JEFFREY MURL, University of Hawai’LDW0ƗQRD (Advisors: Paul Spudis and George Kramer) Geology of the Lunar Imbrium Impact Basin [#1006] 12:00 p.m. ALYSSA PASCUZZO, Smith College (Advisor: Carlton Allen) Modeling the Geologic History of Mt. Sharp [#1007] 12:20 p.m. ZACHARY TORRANO, University of Notre Dame (Advisors: David Mittlefehldt and Zhan Peng) Cosmochemistry of R Chondrites [#1002] 12:40 p.m. LUNCH CONTENTS Stratospheric Chemistry in Saturn’s Atmosphere During the Beacon Storm E. S. Armstrong and J. I. Moses ...................................................................................................................... 1 The Depth-Diameter Relationship for Large Lunar Impact Basins and the Implications for Mare Basalt Thickness S. D. Dibb and W. S. Kiefer ............................................................................................................................. 4 LL-Chondrite LAR 12325: A Product of an Asteroid Impact Cratering Event S. Farsang, A. L. Fagan, and D. A. Kring ....................................................................................................... 7 Effect of Sulfur Concentration and pH Conditions on Akaganeite Formation A. Fox, T. Peretyazhko, B. Sutter, P. Niles, and D. W. Ming ........................................................................ 10 Experiments on Lunar Core Composition: Phase Equilibrium Analysis of a Multi-Element (Fe-Ni-S-C) System B. M. Go, K. Righter, L. Danielson, and K. Pando ....................................................................................... 13 Lithologies Making up CM Carbonaceous Chondrites and Their Link to Space Exposure Ages, and a Study of What CV and R Chondrite Regolith Breccias can tell us About Asteroid Surface Processes T. Gregory, M. E. Zolensky, A. Trieman, E. Berger, L. Le, and A. Fagan .................................................... 16 Venus Highlands: Radar Reflectance and Elevation at High Spatial Resolution on Ovda Regio and Maxwell Montes E. Harrington and A. Treiman ...................................................................................................................... 19 Structural Mapping of Martin Crater Uplift to Test Acoustic Fluidization Models M. K. Johnson and V. L. Sharpton ................................................................................................................ 22 Broad Size Distributions Found Among Distinct Particle Classes Contained in Allende K. A. McCain, J. I. Simon, and J. N. Cuzzi .................................................................................................... 25 Geology of the Lunar Imbrium Impact Basin J. N. Murl ...................................................................................................................................................... 28 Modeling the Geologic History of Mt. Sharp A. Pascuzzo and C. Allen............................................................................................................................... 31 Cosmochemistry of R Chondrites Z. A. Torrano, D. W. Mittlefehldt, and Z. X. Peng......................................................................................... 34 2014 Intern Conference 1 STRATOSPHERIC CHEMISTRY IN SATURN’S ATMOSPHERE DURING THE BEACON STORM. E.S. Armstrong and J. I. Moses2, 1Department of Chemistry, University of Oxford ([email protected]), 2Space Science Insti- tute, Seabrook, TX Branch. ground-based data were available. Introduction: The immense storm that recently The Cassini Composite InfraRed Spectrometer erupted in Saturn’s northern hemisphere, first observed (CIRS) instrument [4] detected significant variation in on 5th December 2010 [1], was primarily a tropospher- stratospheric temperatures during the storm [3,5]. The ic disturbance, noticed due to its typical storm signa- plot in Figure 2 shows the change in temperature at the tures such as lightning and clouds [2]. However, there 1-mbar depth, where the Cassini/CIRS data have the was also an unexpected stratospheric response seen in highest sensitivity. The retrievals also suggest signifi- elevated temperatures and molecular abundances, cant deviation from prestorm abundances of many hy- which has come to be known as the ‘beacon’ region. drocarbons [3,5,6], in particular in the mole fraction of The beacon was initially two smaller regions, called ethene (C2H4), for which Hesman et al [6] find that B1 and B2, which existed at two different latitudes their photochemical model profile must be multiplied (25°-35°N) but which merged in April 2011, around by a factor of 91 to account for the observed emission. 120 days after the start of the tropospheric disturbance Our project seeks to be able to replicate the hydro- [3]. This merger resulted in the formation of one larg- carbon abundances
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