logo
ResearchBunny Logo
How, when and where current mass flows in Martian gullies are driven by CO₂ sublimation

Space Sciences

How, when and where current mass flows in Martian gullies are driven by CO₂ sublimation

L. Roelofs, S. J. Conway, et al.

This fascinating research by Lonneke Roelofs and colleagues reveals how CO₂ sublimation processes, not water, may drive the formation of Martian gullies, challenging our understanding of these intriguing features on Mars.

00:00
00:00
Playback language: English
Abstract
Martian gullies, resembling water-carved features on Earth, defy explanation by water-driven processes. This research combines laboratory experiments simulating CO₂-driven granular flows under Martian atmospheric pressure with climate simulation modeling to investigate how, where, and when CO₂ sublimation drives present-day gully activity. The study demonstrates that CO₂ ice sublimation fluidizes sediment, creating morphologies similar to Martian observations. Furthermore, modeled climatic and topographic conditions align with current gully activity, suggesting CO₂ sublimation as a significant process influencing gully formation and challenging the assumption that gullies definitively indicate liquid water.
Publisher
Communications Earth & Environment
Published On
Mar 13, 2024
Authors
Lonneke Roelofs, Susan J. Conway, Tjalling de Haas, Colin Dundas, Stephen R. Lewis, Jim McElwaine, Kelly Pasquon, Jan Raack, Matthew Sylvest, Manish R. Patel
Tags
Martian gullies
CO₂ sublimation
granular flows
climate modeling
gully activity

Related Publications

Explore these studies to deepen your understanding of the subject.

Expertise in research integration and implementation for tackling complex problems: when is it needed, where can it be found and how can it be strengthened?
Interdisciplinary Studies

Expertise in research integration and implementation for tackling complex problems: when is it needed, where can it be found and how can it be strengthened?

G. Bammer, M. O'rourke, et al.

Dopamine release and dopamine-related gene expression in the amygdala are modulated by the gastrin-releasing peptide in opposite directions during stress-enhanced fear learning and extinction
Psychology

Dopamine release and dopamine-related gene expression in the amygdala are modulated by the gastrin-releasing peptide in opposite directions during stress-enhanced fear learning and extinction

Y. Morishita, I. Fuentes, et al.

Dopamine release and dopamine-related gene expression in the amygdala are modulated by the gastrin-releasing peptide in opposite directions during stress-enhanced fear learning and extinction
Psychology

Dopamine release and dopamine-related gene expression in the amygdala are modulated by the gastrin-releasing peptide in opposite directions during stress-enhanced fear learning and extinction

Y. Morishita, I. Fuentes, et al.

Combined KRAS G12C and SOS1 inhibition enhances and extends the anti-tumor response in KRAS G12C -driven cancers by addressing intrinsic and acquired resistance
Medicine and Health

Combined KRAS G12C and SOS1 inhibition enhances and extends the anti-tumor response in KRAS G12C -driven cancers by addressing intrinsic and acquired resistance

V. Thatikonda, H. Lu, et al.

Listen, Learn & Level Up
Over 10,000 hours of research content in 25+ fields, available in 12+ languages.
No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.
listen to research audio papers with researchbunny