Bethany L. Ehlmann

Professor of Planetary Science; Jet Propulsion Laboratory Research Scientist
A.B., Washington University in St. Louis, 2004; M.Sc., University of Oxford, 2005; M.Sc., 2007; M.S., Brown University, 2008; Ph.D., 2010. Assistant Professor, Caltech, 2011-17; Professor, 2017-; Jet Propulsion Laboratory Research Scientist, 2011-.


Research Interests

Remote compositional analysis of planetary surfaces; environmental change over Mars history; chemical and physical weathering processes on terrestrial planets; infrared spectroscopy and quantitative radiative transfer modeling; habitability, rock-microbe interactions, biomarker preservation; early Earth surface environments; environmental science and applications of remote sensing; science policy.


Selected Publications 

For a complete publications list, see

Ehlmann, BL et al. (and 45 others) The Sustainability of Habitability on Terrestrial Planets: Insights, Questions, and Needed 5 Measurements from Mars for Understanding the Evolution of Earth-like Worlds, J. Geophys. Res., doi: 10.1002/2016JE005134

Ehlmann, BL, GA Swayze, RE Milliken, JJ Wray, JF Mustard, GN Breit, RN Clark, B Gondet, F Poulet, RO Rye, WM Calvin, WM Benzel, KD Seelos, J Carter, SL Murchie. Discovery of alunite in Cross Crater, Terra Sirenum, Mars: Evidence for precipitation from acidic, sulfurous groundwaters on the margin of a paleolake. American Mineralogist, doi: 10.2138/am-2016-5574, 2016

Ehlmann, BL and J Buz. Mineralogy and Fluvial History of the Watersheds of Gale, Knobel, and Sharp craters: A Regional Context for MSL Curiosity's Exploration. Geophys. Res. Lett., doi: 10.1002/2014GL062553, 2015.

Hu, R, DM Kass, BL Ehlmann, Y Yung. Tracing the fate of carbonate and the atmospheric evolution of Mars, Nature Communications, doi: 10.1038/ncomms10003, 2015

Borlina, C.S., BL Ehlmann, E. Kite. Modeling the Thermal and Physical Evolution of Mount Sharp's Sedimentary Rocks, Gale Crater, Mars: Implications for Diagenesis on the MSL Curiosity Rover Traverse. J. Geophys. Res, doi: 10.1002/2015JE004799, 2015

Edwards, CS and BL Ehlmann. Carbon sequestration on Mars, Geology, doi:10.1130/G36983.1, 2015

Greenberger, R, JF Mustard, BL Ehlmann, DL Blaney, EA Cloutis, JH Wilson, RO Green, AA Fraeman, Imaging spectroscopy of geological samples and outcrops: novel insights from microns to meters, GSA Today, GSA Today, 25(12) doi: 10.1130/GSATG252A.1, 2015.

Pan, L, BL Ehlmann. Phyllosilicate and hydrated silica detections in the knobby terrains of Acidalia Planitia, Geophysical Research Letters, 41, 1890-1898, doi:10.1002/2014GL059423, 2014.

Ehlmann, Bethany L. and Edwards, Christopher S. (2014) Mineralogy of the Martian Surface. Annual Review of Earth and Planetary Sciences, 42 . pp. 291-315. ISSN 0084-6597.

Hu, Renyu and Ehlmann, Bethany L. and Seager, Sara (2012) Theoretical Spectra of Terrestrial Exoplanet Surfaces. Astrophysical Journal, 752 (1). Art. No. 7. ISSN 0004-637X.

Ehlmann, Bethany L. et al. (2011) Subsurface water and clay mineral formation during the early history of Mars. Nature, 479 (7371). pp. 53-60. ISSN 0028-0836.

Ehlmann, B. L. and Mustard, J. F. and Murchie, S. L. (2010) Geologic setting of serpentine deposits on Mars. Geophysical Research Letters, 37 . Art. No. L06201. ISSN 0094-8276.

Ehlmann, Bethany L. et al. (2009) Identification of hydrated silicate minerals on Mars using MRO-CRISM: Geologic context near Nili Fossae and implications for aqueous alteration. Journal of Geophysical Research E, 114 . Art. No. E00D08. ISSN 0148-0227.

Ehlmann, Bethany L. et al. (2008) Orbital Identification of Carbonate-Bearing Rocks on Mars. Science, 322 (5909). pp. 1828-1832. ISSN 0036-8075.

Ehlmann , Bethany L. et al. (2008) Clay minerals in delta deposits and organic preservation potential on Mars. Nature Geoscience, 1 (6). pp. 355-358. ISSN 1752-0894.

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