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Ryan Schwegman

M.Sc. Geology/Planetary Science

Co-supervised with Dr. Livio Tornabene

Department
Job Title
Thesis

Thesis Title

Morphology and morphometry of double layered ejecta craters on Mars

Thesis Description

Double layered ejecta (DLE) craters on Mars display two distinct layers of ejecta that appear to have been ‘fluidized’ during the emplacement process.  Volatile content within the subsurface is generally recognized as the main variable aiding ‘flow’ of ejecta layers.  On Mars, volatile concentrations are highest near the poles and decrease equatorward.  Knowing this, one would expect ejecta to travel further at higher latitudes as compared to lower latitudes.  My research focuses on ejecta mobility (EM) of DLEs and how this varies globally with respect to latitude.  In addition, I am studying the effect target material (e.g., impact into basalt vs sediment) has on EM.

Recent Abstracts

Conference Presentations & Abstracts

Schwegman R. D., Osinski G. R., Jones E., and Tornabene L. L. (2014) Assessing the Morphology of Double Layered Ejecta Craters at Equatorial Regions on Mars [abstract #2385]. 45th Lunar and Planetary Science Conference. The Woodlands, TX, March 2014.

Schwegman R. D. and Bourke M. C. (2013) Analysis of Rock Breakdown Features at Gusev Crater, Mars [abstract #3086]. 44th Lunar and Planetary Science Conference. The Woodlands, TX, March 2013.

Schwegman, R. D., Osinski, G. R., and Tornabene, L. L. (2014) A Comparison of the Morphometry of Double Layered Ejecta Craters in Different Volcanic Regions on Mars [abstract #1046]. 8th International Conference on Mars. Pasadena, CA, July 2014.

Degrees Obtained

B.Sc. Geology
Oklahoma State University
Stillwater OK, USA
Summer 2012