Seasonal ices and gullies on Mars studied with CaSSIS

Abstract

Gullies on Mars are kilometer-scale downslope mass wasting systems that resemble water-worn gullies on Earth. Recent observations have revealed that they are active today and that this activity is linked is linked with the seasonal frost cycle of carbon dioxide. In this study we use images from the Colour and Stereo Surface Imaging System (CaSSIS) aboard ESA’s Trace Gas Orbiter (TGO) to study the relationship between surface frosts and gullies.