Tag Archives: MRO

MARCI weather report, February 13-19, 2017

Mars continued to display local-scale storm activity for the past week. Repeated dust storms were observed over Amazonis and near the Phlegra Montes. The northern part of the Acidalia storm-track also experienced short-lived dust storms near Tempe and Chryse. Further … Continue reading

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HiRISE: Layered mantling deposits in the northern mid-latitudes

Ice-rich mantling deposits accumulate from the atmosphere in the Martian mid-latitudes in cycles during periods of high obliquity (axial tilt), as recently as several million years ago. These deposits accumulate over cycles in layers, and here in the southern mid-latitudes, … Continue reading

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HiRISE: Obstacles and wakes in lava

Amazonis Planitia is a broad plain on Mars, covered with ancient lava. This image shows an interesting feature of an old lava flow. When it was mostly liquid, the lava had a crust of cooled debris floating on the surface. … Continue reading

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HiRISE: Terminal lobes of a large debris flow in Melas Chasma

Terminal lobes of a large debris flow in Melas Chasma. Beautiful Mars series.

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HiRISE: New crater on a dusty slope

This image shows a new impact site originally detected by the Context Camera onboard MRO. The crater is on a dusty slope, which also has several dark slope streaks due to dust avalanches. A previous impact at another place on … Continue reading

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HiRISE: Bedrock in Antoniadi Crater

Bedrock in Antoniadi Crater. Beautiful Mars series.

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MARCI weather report, February 6-12, 2017

Local-scale dust storm activity soldiered on over the northern lowlands and along the Acidalia storm-track this past week on Mars. At the beginning of the week, a dust storm over Xanthe Terra pushed southward over eastern Valles Marineris where it … Continue reading

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HiRISE: Scars of erosion

This large crescent dune in Kaiser Crater shows the scars of many types of seasonal erosional activities. Along its downwind slope are large gullies which are active during winter, when frost drives dune material downslope, carving out channels and creating … Continue reading

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HiRISE: A dust devil on hilly terrain

There are many dust devils on Mars — little twisters that raise dust from the surface. They have also cleaned dust off of the solar panels of the rovers Opportunity and Spirit, improving the solar power production. (Spirit became stuck … Continue reading

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HiRISE: Old features and new

This image covers a portion of a typical impact crater in Terra Sirenum at about 40 degrees south latitude on Mars. At the top of the image, outside the crater rim, there is a mid-latitude mantle, rough in places where … Continue reading

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