Experimental study of sediment transport processes by liquid water and brine under Martian pressure

Philippe, Meven; Conway, Susan J.; Raack, J.; Carpy, S.; Massé, Marion; Patel, Manish R.; Sylvest, Matthew

doi:10.1016/j.icarus.2023.115475

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Quite generally, mobilization is important for all kinds of slopes on Mars because their angle is set by downhill motion. We only consider dry flows here, though wet flows might play their part in particle motion (Philippe et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Dry Downhill Particle Motion on Mars

Bila,

Wurm,

Stuers

et al. 2024

Planet. Sci. J.

View full text Add to dashboard Cite

We recently flew a new setup on parabolic flights for the first time to study particle motion on Martian slopes under Martian gravity. Here, we describe the initial experiments. We used dust/sand beds at varying ambient pressure of a few hundred pascals. The inclination of the particle bed was varied from 0° to 45° and parts of the surface were illuminated under varying conditions. We could observe downhill motion of material related to the insolation at the lowest light flux used of 591 ± 11 W m−2 for JSC Martian simulant. Motion occurred at significantly lower inclinations under illumination than without illumination, i.e., down to about 10° compared to about 20°–30°, respectively. We attribute this reduction in slope to thermal creep gas flow in the subsoil. This induces a Knudsen compressor, which supports grains against gravity and leads to smaller angles of repose. This is applicable to recurring slope lineae and slopes on Mars in general.

show abstract

Section: Introductionmentioning

confidence: 99%