PTYS/LPL Postdocs

Ali Bramson

Postdoctoral Research Associate
Planetary surfaces
Ph.D. Planetary Sciences, 2018, University of Arizona

Kuiper 534

Advisor(s): Lynn Carter

My research interests are in understanding the quantitative geomorphology of other planets. I am particularly interested in the physical processes related to ice and volatiles that affect the surfaces of solid bodies in our solar system. I enjoy tackling these problems using a combination of spacecraft remote sensing observations and theoretical modeling, supplemented by occasional field work at terrestrial analog sites and experimental studies.

Current Projects

Subsurface Water Ice Mapping (SWIM) in the Northern Hemisphere of Mars

The goal of the SWIM project is to provide a set of mapping products using existing spacecraft data that delineate subsurface ice in the mid-latitudes of Mars. We aim to identify and map indicators of possible subsurface ice in each data set and use a combination of all data sets to assess the likelihood of ice being present in shallow (less than 5 m depth) and deep (more than 5 m depth) zones. In this, we are developing the SWIM Equation, styled after the famous Drake Equation, which will provide maps of how consistent the data are with the presence or absence of water ice resources in the subsurface. 
Click here to learn more about the SWIM Project!

Radar response of lunar cryptomaria and pyroclastic deposits in Mini-RF data

I am investigating the monostatic and bistatic radar response of cryptomaria and pyroclastic deposits in Mini-RF data, a side-looking hybrid-polarization radar system onboard the Lunar Reconnaissance Orbiter, with my postdoc advisor Dr. Carter. I am comparing and modeling the radar response of these terrains to other datasets (e.g. Clementine color ratios, Titanium map, etc.) and to the radar response of other terrains (e.g. Mare and Highlands).

Modeling and laboratory experiments of ice sintering processes in non-terrestrial environments

Our team, led by PI Dr. Jamie Molaro, is combining laboratory experiments and theoretical modeling to explore the role of sintering on the evolution of water ice on icy satellites, Mars, and across the solar system. I will be applying our experimentally-validated model to Mars to explore the role that diurnal and seasonal thermal cycling plays in sintering rates, and the formation of subsurface density gradients to explore how these processes may produce layering in martian ice deposits, and relate the results to spacecraft images and radar subsurface detections that show layering within Martian ice deposits.

Complete publications list available from: NASA ADS Author search Ali Bramson

Refereed publications (NASA ADS): Calendar Years 2016 through August 2018

Smith, I. B., Diniega, S., Beaty, D. W., Thorsteinsson, T., Becerra, P., Bramson, A. M., Clifford, S. M., Hvidberg, C. S., Portyankina, G., Piqueux, S., Spiga, A., Titus, T. N. 6th international conference on Mars polar science and exploration: Conference summary and five top questions 2018Icar..308....2S

Dundas, C. M., Bramson, A. M., Ojha, L., Wray, J. J., Mellon, M. T., Byrne, S., McEwen, A. S., Putzig, N. E., Viola, D., Sutton, S., Clark, E., Holt, J. W. Exposed subsurface ice sheets in the Martian mid-latitudes 2018Sci...359..199D

Bramson, A. M., Byrne, S., Bapst, J. Preservation of Midlatitude Ice Sheets on Mars 2017JGRE..122.2250B

Sori, M. M., Bapst, J., Bramson, A. M., Byrne, S., Landis, M. E. A Wunda-full world? Carbon dioxide ice deposits on Umbriel and other Uranian moons 2017Icar..290....1S

Sori, M. M., Byrne, S., Bland, M. T., Bramson, A. M., Ermakov, A. I., Hamilton, C. W., Otto, K. A., Ruesch, O., Russell, C. T. The vanishing cryovolcanoes of Ceres 2017GeoRL..44.1243S

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Last updated on March 31, 2019