The dunes in Becquerel Crater that carve out the layered material originate upwind in this smaller crater on Becquerel’s floor. Their shape in Context Camera images indicates a more complex wind regime than the unidirectional barchans that carve out yardangs in the layered deposit to the south. Why is it different? And what is the original source of dune sand in this crater?

ID: ESP_065777_2020
date: 7 August 2020
altitude: 283 km

https://uahirise.org/hipod/ESP_065777_2020
NASA/JPL-Caltech/University of Arizona
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