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Central Pit Craters in the Southern Hemisphere of Mars

Investigating central pit craters on Mars, focusing on their formation, crater and pit diameters, and correlation with topography using data from THEMIS, JMARS, and GIS to understand their significance.

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Central Pit Craters in the Southern Hemisphere of Mars

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  1. Central Pit Craters in the Southern Hemisphere of Mars Rebekah DeVries Northern Arizona University Dept. of Physics

  2. What are Central Pit Craters • Central depression • Volatile-Rich Crusts • Mars • Ganymede • Callisto • floor pits vs summit pits

  3. Summit and Floor Pit Craters

  4. Importance of Study • Relationship to Crustal Volatiles • Constraints on Formation Models • Vaporization of Crustal Ice • Collapse of Central Peak • Excavation into Subsurface Weak (Liquid) Layer

  5. Method • Use THEMIS visible and daytime IR to identify central pit craters and determine location • Use JMARS to measure crater and pit diameters • Use GIS to plot locations of pit craters • Conduct correlation studies

  6. diameter range of Floor: 12.6 – 44.4 km Median: 20.5 Summit:6.1 – 40.9 km Median: 15.6 floor pits tend to be smaller relative to their parent craters than summit pits no strong correlation of pit occurrence with topography complete survey of central pit craters in southern hemisphere compare distributions with topography, geologic unit, etc. use results to constrain formation models Preliminary Results and Future Work

  7. Thank You • A Special Thanks to Dr. Nadine Barlow, my wonderful and very patient Mentor. • To the THEMIS team, without them, this project wouldn’t be possible • To the NASA Space Grant Program for giving my this wonderful opportunity to explore the world of research! ANY QUESTIONS?

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