Tag Archives: fluvial landforms

THEMIS: Jezero Crater delta landing site

THEMIS Image of the Day, August 12, 2019. At the top of today’s VIS image is a delta deposit that was created by the flow from the rim channel into the crater. Deltas form when sediments settle out due to … Continue reading

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Evidence for fluvial deposition in Arabia Terra

[Editor’s note: From a paper by Joel Davis and six co-authors recently published in the Journal of Geophysical Research.] A Diverse Array of Fluvial Depositional Systems in Arabia Terra: Evidence for mid‐Noachian to Early Hesperian Rivers on Mars • Fluvial … Continue reading

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THEMIS: Streamlined islands in Athabasca Valles

THEMIS Image of the Day, July 2, 2019. This VIS image shows part of the channel called Athabasca Valles. Several streamlined islands are visible at the top of the image. The source of the flood was likely an outburst of … Continue reading

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HiRISE: Transition

Transition. This image shows where a fluvial channel changes from a depression to an inverted high standing channel in Terra Sirenum. That change likely marks the spot where the material was possibly elevated and more resistant to erosion. HiRISE Picture … 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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Rivers raged on Mars late into its history

Long ago on Mars, water carved deep riverbeds into the planet’s surface — but we still don’t know what kind of weather fed them. Scientists aren’t sure, because their understanding of the Martian climate billions of years ago remains incomplete. … Continue reading

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THEMIS: Near the river

THEMIS Image of the Day, March 1, 2019. This false color image contains several channel features. Towards the top of the image are several stream-lined islands, created by liquid flow eroding preexisting rock. The islands have a tear-drop shape, with … Continue reading

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Mars Express: Signs of ancient flowing water

These images from ESA’s Mars Express satellite show a branching, desiccated system of trenches and valleys, signs of ancient water flow that hint at a warmer, wetter past for the Red Planet. We see Mars as a cold, dry world, … Continue reading

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THEMIS: Rolling down into Argyre Planitia

THEMIS Image of the Day, November 27, 2018. Today’s VIS image shows several small channels. These channels are along the break in topography, that leads down into Argyre Planitia. Argyre Planitia and Hellas Planitia are deep basins in the southern … Continue reading

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THEMIS: Channels flowing from a ridge

THEMIS Image of the Day, November 9, 2018. This VIS image is located in Terra Sirenum. The bright linear feature at the bottom of the image is the crest of a ridge. The multiple channel features toward the top of … Continue reading

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