Tag Archives: University of Arizona

HiRISE: The floor of a crater in the Phlegra region

The floor of a crater in the Phlegra region. The objective of this observation is to examine this crater floor that not only cracks in it, but also what looks like lava piled up in one area. HiRISE Picture of … Continue reading

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HiRISE: Hephaestus Fossae pits

Hephaestus Fossae pits. The Hephaestus Fossae are a system of troughs and channels that are about 604 kilometers in length. The fossae have been tentatively identified as outflow channels, but their origin and evolution remain ambiguous. HiRISE Picture of the … Continue reading

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HiRISE: Slope monitoring

Slope monitoring. The recurring slope lineae (RSL) in this image are large and have high contrast. Most importantly, we see multiple examples of RSL flowing on bedrock, alternating between bedrock and regolith and bedrock and regolith, and regolith only. Do … Continue reading

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HiRISE: In the land of Terra Sabaea

In the land of Terra Sabaea. The rationale for this observation is to look at the fluvial features and diverse composition of the terrain. Terra Sabaea is fairly large and parts of it are found in five quadrangle regions of … Continue reading

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HiRISE: Collapsed material on the floor of Orson Welles Crater

Collapsed material on the floor of Orson Welles Crater. This observation captures collapsed blocks of material on floor of Orson Welles Crater. Layers and the clay minerals found in this 125-kilometer crater are evidence that it once contained a lake. … Continue reading

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HiRISE: Terrain near Idaeus Fossae

Terrain near Idaeus Fossae. Many valleys occur all over Mars that reveal an extensive ancient history of liquid water erosion. While these valley systems are typically now covered with fine soils and sand dunes, the overall scale and shape of … Continue reading

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HiRISE: Mounds in depressions in Deuteronilus Mensae

Mounds in depressions in Deuteronilus Mensae. The objective of this observation is to determine the nature of round mounds in depressions. The depressions may be part of the ribbed upper plains unit. Some of the edges of the depressions are … Continue reading

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HiRISE: Ridges in southern Claritas Fossae

Ridges in southern Claritas Fossae. The objective of this observation is to determine the nature of a small field of curved ridges. They may be inverted streams. Claritas Fossae is a densely-dissected highland terrain on the Tharsis Rise of Mars, … Continue reading

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HiRISE: A snow plow landslide

This image shows a small landslide in Iani Chaos. Landslides are common on Mars where there are steep slopes, including this area where there are numerous mounds and hills. What is unusual about this landslide is that it carved a … Continue reading

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HiRISE: A frosted surface

This is the first of a new monitoring series to track seasonal processes. It is also a striking image with late winter angled illumination over dunes covered by carbon dioxide frost mixed with dust. Dark spots may be where sand … Continue reading

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