Tag Archives: wind streaks

THEMIS: Lava flows chopped by graben in Olympica Fossae

THEMIS Image of the Day, May 21, 2018. The linear channel in the bottom half of this VIS image is part of Olympica Fossae. Olympica Fossae is a complex channel form located on the Tharsis plains between Alba Mons and … Continue reading

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HiRISE: Pettit Crater wind streak and intracrater dunes

Pettit Crater wind streak and intracrater dunes. Part of the rationale for this observation is to look for dune bedforms that may be related to thermal inertia and particle mobility. This crater was named after Edison Pettit, an American astronomer (1890–1962). … Continue reading

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THEMIS: A peppering of small craters

THEMIS Image of the Day, April 4, 2018. This field of small dark craters is located in southern Elysium Planitia. The dark appearance against the surrounding lava flows suggests that the craters post-date the lava flows. The small “tails” near … Continue reading

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THEMIS: Dunes and wrinkle ridge, Meroe Patera

THEMIS Image of the Day, October 26, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Dunes, wrinkle ridges, wind streaks

THEMIS Image of the Day, October 24, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Wind streaks near Meroe Patera

THEMIS Image of the Day, October 20, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds from the northeast (upper … Continue reading

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Trace Gas Orbiter: Clouds over lava flows

Diffuse, water-ice clouds, a hazy sky and a light breeze. Such might have read a weather forecast for the Tharsis volcanic region on Mars on 22 November 2016, when this image was taken by the ExoMars Trace Gas Orbiter. Clouds, … Continue reading

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THEMIS: Dunes, dust devil tracks, and wind streaks on northern polar lowlands

THEMIS Image of the Day, June 21, 2017. Do you see what I see? Look out, a barrage of bullets is headed our way! (THEMIS Art #130) More THEMIS Images of the Day by geological topic.

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Tornado-like winds from impacts scoured surface

Plumes of vapor generated by ancient impacts on Mars created tornado-like winds possibly swirling at more than 500 miles per hour, which explain mysterious streaks seen near large impact craters on the Martian surface. In looking at NASA images of … Continue reading

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THEMIS: Grazing light at sunrise on lava flows

THEMIS Image of the Day, January 26, 2017. The grazing light of sunrise, coming from the right, reveals edges and other details in lava flows of Daedalia Planum. These flows come from Arsia Mons volcano. A windstreak is visible at … Continue reading

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