Eyjafjallajökull, Iceland, August 2016

Hi, my name is David K. Weiss. I recieved my PhD in geology from Brown University in 2017. I got my B.S. in geology from the College of Charleston in 2012. You can contact me at David_Weiss@brown.edu.

My research interests include (1) martian impact cratering; (2) the nature of the early Mars climate; (3) the characteristics and geologic history of the martian cryosphere and hydrologic cycle.

My personal interests include wilderness backpacking.

My graduate advisor is Jim Head.

My undergraduate advisor was Cass Runyon.

Check out (1) my peer-reviewed publications;
(2) selected recent talks and conference participation;
(3) google scholar profile;
(4) press on my research.

  1. Extensive Amazonian-aged fluvial channels on Mars: Evaluating the role of Lyot crater in their formation (pdf, article)
  2. Evidence for stabilization of the ice-cemented cryosphere in earlier martian history: Implications for the current abundance of groundwater at depth on Mars (pdf, article)
  3. Testing landslide and atmospheric-effects models for the formation of double-layered ejecta craters on Mars (pdf, article)
  4. Salt or ice diapirism origin for the honeycomb terrain in Hellas basin, Mars?: Implications for the early martian climate (pdf, article)
  5. Impact Ejecta-Induced Melting of Surface Ice Deposits on Mars (pdf, article)
  6. Crater Degradation in the Noachian Highlands of Mars: Assessing the Hypothesis of Regional Snow and Ice Deposits on a Cold and Icy Early Mars (pdf, article)
  7. Preservation of ancient ice at Pavonis and Arsia Mons: Tropical mountain glacier deposits on Mars (pdf, article)
  8. Ejecta mobility of layered ejecta craters on Mars: Assessing the influence of snow and ice deposits (pdf, article)
  9. Formation of double-layered ejecta craters on Mars: A glacial substrate model (pdf, article)

  1. Weiss, D. K. , Head, J. W. “History of the martian cryosphere: is the ice-cemented portion of the cryosphere groundwater-supply-limited?”.
  2. Weiss, D. K. , Head, J. W. “Hydrology of the Hellas basin and the early Mars climate: Was the honeycomb terrain formed by salt or ice diapirism?”.
  3. Weiss, D. K. , Head, J. W. “Evaluating the thickness of the martian ice-cemented cryosphere using thermal modeling and impact crater morphology”.
  4. Weiss, D. K. , Head, J. W. “Testing the glacial substrate model for double-layered ejecta craters on Mars”.
  5. Weiss, D. K. , Head, J. W. “Noachian highland crater degradation on Mars: Assessing the role of regional snow and ice deposits in a cold and icy early Mars”.
  6. Weiss, D. K. , Head, J. W. “Ejecta mobility of layered ejecta Craters on Mars: Assessing the influence of surface snow and ice deposits”.
  7. Weiss, D. K. , Head, J. W. “Double-layered ejecta craters (DLE) on Mars: Assessing a glacial substrate model as a factor in their origin”.
  8. Weiss, D. K. , Budney, C. J, Shiraishi, L, Klein, K., Gilbert, J. “Rock sample destruction limits for the Mars Sample Return mission”.

    1. Hot rocks, not warm atmosphere, led to relatively recent water-carved valleys on Mars, June 2017 (Brown News, UPI, Breitbart)
    2. Strange Mars Craters Created By Ice?, August 2013 (National Geographic, Space.com, Discovery News)
    3. 'Honeycombs' and Hexacopters Help Tell Story of Mars, March 2013 (NASA article)



    I find the unusual double-layered ejecta (DLE) crater morphology on Mars particularily interesting.
    I am also interested in the configuration and dynamics of pore-ice and groundwater in the deep martian subsurface.