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Home NEWS Science News Biology

Researchers receive $320,000 From NASA to study Martian polar caps

Bioengineer by Bioengineer
September 6, 2025
in Biology
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U of A Researchers will study how carbon-dioxide ice pits have formed and evolved over time to gain understanding of atmospheric dynamics of Mars

FAYETTEVILLE, Ark. – Two University of Arkansas researchers have received a three-year, $320,000 grant from NASA to study how carbon-dioxide ice pits in the polar caps of Mars have formed and evolved over time. The goal is to better understand the seasonal and long-term cycles of these ice pits and how they impact the overall atmospheric dynamics of the planet.

Vincent Chevrier, an associate professor at the Arkansas Center for Space and Planetary Sciences, and Jason Tullis, a professor of geography with Department of Geosciences and Center for Advanced Spatial Technologies, will focus their efforts primarily on the south polar residual cap, which is characterized by sublimation pits, colloquially referred to as “the Swiss Cheese terrains.”

As on Earth, Martian polar caps expand in winter and shrink in summer, when the CO2 sublimates, turning directly from solid to gas, which can generate a thicker atmosphere and stronger winds. Generally, the sublimation pits appear to be growing over time, merging with other pits, while the cap itself is slowly shrinking. The researchers hope to better understand both the mechanism and time scale of the CO2 ice cycle. Were the caps laid down hundreds of thousands of years ago or just a few hundred? Is their formation a recurring or unique event?

Critical to their research will be frequent imaging acquired from the High Resolution Imaging Science Experiment, or HiRISE – an extremely powerful camera attached to the Mars Reconnaissance Orbiter. According to NASA, HiRISE “takes pictures that cover vast areas of Martian terrain while being able to see features as small as a kitchen table.”

“For 15 years, HiRISE has powered Mars exploration with the kind of breathtaking detail we are lucky to get from any planetary orbit,” Tullis said. “For me there is tremendous excitement in the convergence of geospatial technologies and provenance information that supports a greater realization of what HiRISE offers.”

Does this research have applications here on Earth? Yes and no.
“Those caps are pretty unique to Mars,” Chevrier said. “We don’t have sublimation pits here on Earth. We mostly want to understand the climate of Mars.” While he thinks that having a better understanding of the planet’s climate would be critical someday to making Mars habitable to humans, he doesn’t think terraforming Mars is actually that likely. At least, not any time soon.

Mostly what Chevrier wants to do is better understand the solar system and how it evolved.

“The more you understand the rest of the planets,” he explained, “the more you understand why Earth is the way it is. You have to understand other planets to really understand Earth.”

###

About the University of Arkansas: As Arkansas’ flagship institution, the U of A provides an internationally competitive education in more than 200 academic programs. Founded in 1871, the U of A contributes more than $2.2 billion to Arkansas’ economy through the teaching of new knowledge and skills, entrepreneurship and job development, discovery through research and creative activity while also providing training for professional disciplines. The Carnegie Foundation classifies the U of A among the top 3% of U.S. colleges and universities with the highest level of research activity. U.S. News & World Report ranks the U of A among the top public universities in the nation. See how the U of A works to build a better world at Arkansas Research News.

CONTACTS:

Vincent Chevrier, associate professor

Arkansas Center for Space and Planetary Sciences

479-575-7778, [email protected]

Jason Tullis, professor of geosciences

Center for Advanced Spatial Technologies

479-575-8784, [email protected]

Hardin Young, assistant director for research communications

University Relations

479-575-6850, [email protected]

Media Contact
Hardin Young
[email protected]

Original Source

https://news.uark.edu/articles/57069/researchers-receive-320-000-from-nasa-to-study-martian-polar-caps

Tags: AstronomyBiochemistryPlanets/MoonsSpace/Planetary Science
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