Tag Archives: yardangs

THEMIS: Wind etching

THEMIS Image of the Day, June 9, 2016. Today’s VIS image is located near Memnonia Sulci, on the edge of Lucus Planum. The material at the top and left side of the image has been eroded by the wind to … Continue reading

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HiRISE: Wind at work

Wind is one of the most active forces shaping Mars’ surface in today’s climate. The wind has carved the features we call “yardangs,” one of many in this scene, and deposited sand on the floor of shallow channels between them. … Continue reading

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HiRISE: Contact with yardangs

Contact with yardangs — Looks like it’s going well. Beautiful Mars series.

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HiRISE: Meanders in ridge form in Zephyria

In this image, an ancient sinuous meandering river system is surrounded by features called “yardangs.” The yardangs are the ridge-like landforms that align approximately north-south. These features were created as the wind scoured and eroded the bedrock. The raised relief … Continue reading

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HiRISE: Dust and dunes in western Medusae Fossae

This beautifully contrasted infrared-color image shows an area approximately 600 by 900 meters. This is a close-up of the western Medusa Fossae formation where we can see dust-covered rocky, bedrock surfaces (beige) and a bluish-tinted sand sheet that transitions into … Continue reading

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THEMIS: Becquerel Crater – false color

THEMIS Image of the Day, September 14, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading

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HiRISE: Yardangs from Apollonaris Patera

We see here a terrain with an incredible morphologic dichotomy: a relatively smooth region that transitions into sharp ridges. These ridges, aligned in the nearly same direction, are called yardangs. Yardangs are not unique to Mars. Many yardangs can be … Continue reading

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HiRISE: Ridges in Gordii Dorsum

Ridges in Gordii Dorsum. Beautiful Mars series.

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THEMIS: Wind erosion

THEMIS Image of the Day, July 2, 2015. Long-term winds have etched the surface in Memnonia Sulci. Partial cemented surface materials are easily eroded by the wind, forming linear ridges called yardangs. The multiple direction of yardangs in this VIS … Continue reading

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HiRISE: On the beauty of yardangs

Some geological materials (like solid rock) are incredibly tough, but others (like piles of volcanic ash) are quite soft. Some materials are soft enough that they can be eroded by the wind alone and yield landscapes that look like what … Continue reading

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