Edmund Grin
Edmond Grin

Research Scientist

Disciplines: Hydrogeology


With an academic background in hydrogeology, it’s hardly surprising that for three dozen years Edmond Grin worked on dam and hydropower projects. His familiarity with the characteristics of lakes and rivers on Earth makes him especially valuable when it comes to looking for similar features on Mars, where NASA’s exploration strategy has been to “follow the water.”

Grin, together with his wife, Nathalie Cabrol, championed Gusev crater – an apparent lake basin – as the landing site for the Spirit rover. He’s now busy pursuing how rovers in the future can go Spirit one better: not just look for signs of water, but signs of life. A new three-year project in which Grin is involved, called “Life in the Atacama”, will demonstrate that autonomous robot rovers can reliably detect primitive microorganisms. The rovers will be field tested in Chile’s Atacama desert, an earthly analog for the landscapes of Mars. While it may be many decades before human biologists plant their boots on the Red Planet, Grin’s wheeled proxies might get there much sooner. Major discovery could be theirs.


Nathalie Cabrol, Edmond Grin, 2001. The recent Mars global warming (MGW) and/or South Pole Advance (SPA) hypothesis: Global geological evidence and reasons why gullies could still be forming today 33rd Lun. Plan. Sci. Conf.1058 (Abstract),

R. M. Haberle, Nathalie Cabrol, Edmond Grin, Christopher McKay, Richard Quinn, J. Schaeffer, Aaron Zent, 2001. On the Possibility of liquid water on present day Mars Journal of Geophysical Research106, 23317-23326.

Nathalie Cabrol, R.C. Anderson, Victor Baker, D.A. Crawford, James Dohm, Edmond Grin, D.D. Wynn-Williams, 2001. Recent aqueous environments in impact craters and the astrobiological exploration of Mars32nd Lun. Plan. Sci. Conf.1251 (Abstract),

D.D. Wynn-Williams, Nathalie Cabrol, Edmond Grin, R.M. Haberle, Carol R. Stoker, 2001. Brines in seepage channels as eluents for sub-surface relict biomolecules on Mars? Astrobiology2, 165-184.

Nathalie Cabrol, Edmond Grin, 2001. Composition of the Drainage Network on Early MarsGeomorphology37, 269-287.

Edmond Grin, E. A. Bettis, Nathalie Cabrol, C.T. Foster, Jeffrey E. Moersch, M. Reagan, Carol R. Stoker, 2001. Geological Analysis of the Silver Lake Marsokhod Field Test Site from Ground-Truth Sampling Journal of Geophysical Research106, 7733-7744.

Nathalie Cabrol, Edmond Grin, 2001. The Evolution of Lacustrine Environments on Mars: Is Mars Only Hydrologically Dormant? Icarus149, 291-328.

Nathalie Cabrol, D.D. Wynn-Williams, Edmond Grin, D.A. Crawford, 2001. Recent Aqueous environments in impact crater lakes on Mars 2001: an Astrobiological perspective Icarus154, 98-112.

Nathalie Cabrol, E.A. Bettis III, B. Glenister, G. Chong, C. Herrera Lameli, A. Jensen, M. Pereira, C.R. Stoker,Edmond Grin, Ragnhild Landheim, J. Golden, K. Saville, G. Ludvigson, B. Witzke, 2001. Nomad Rover Field Experiment, Atacama Desert, (Chile) II. Identification of Paleolife Evidence Using A Robotic Vehicle: Lessons and Recommendations for a Mars Sample Return Mission Journal of Geophysical Research106 E4, 7639-7663.

Nathalie Cabrol, Edmond Grin, 2000. Distribution, Classification and Ages of Martian Impact Crater LakesIcarus142, 160-172.

Nathalie Cabrol, Edmond Grin, W.H. Pollard, 2000. Possible Frost Mounds in Ancient Martian LakebedIcarus145, 91-107.

Edmond Grin, Nathalie Cabrol, Jeffrey E. Moersch, Ted Roush, R Stoker, 1999. Geological Analysis of the Silver Lake Marsokhod Field Test Site from Ground-Truth Sampling To be submitted to the Journal of Geophysical Rese

Nathalie Cabrol, Edmond Grin, Ragnhild Landheim, Christopher McKay, Horton E. Newsom, 1999. Hydrogeologic Evolution of Gale Crater and its Relevance to the Exobiological Exploration of Mars Icarus139, 235-245.

Nathalie Cabrol, Edmond Grin, Horton E. Newsom, Ragnhild Landheim, Christopher McKay, 1998. Hydrogeologic Evolution of Gale Crater and its Relevance for Exobiology Exploration Icarus139,

Nathalie Cabrol, Ronald Greeley, Edmond Grin, R.O. Kuzmin, Ragnhild Landheim, 1998. Duration of the Ma'adim Vallis/Gusev Crater Hydrogeologic System, Mars Icarus133, 98-108.

Nathalie Cabrol, Edmond Grin, Ragnhild Landheim, 1998. Ma'adim Vallis Evolution: Geometry and Models of Discharge Rate Icarus132, 362-377.

Nathalie Cabrol, Gilles Dawidowicz, Edmond Grin, 1997. A Model of Outflow Generation by Hydrothermal Underpressure Drainage in Volcano-Tectonic Environment, Shalbatana Vallis (Mars) Icarus125, 455-464.

Edmond Grin, Nathalie Cabrol, 1997. Limnologic Analysis of Gusev Crater Paleolake, Mars Icarus130, 461-474.

Nathalie Cabrol, Gilles Dawidowicz, Edmond Grin, 1996. Ma'adim Vallis Revisited through New Topographic Data: Evidence for an Ancient Intravalley Lake Icarus123, 269-283.

Nathalie Cabrol, Edmond Grin, 1995. A morphological view on potential riches for exobiology on MarsPlanet, Space Science43, 179-188.