Tag Archives: Thermal Emission Imaging System

THEMIS: Softly rounded hills in Phlegra Montes

THEMIS Image of the Day, April 25, 2018. The rounded hills in this VIS image are located in Arcadia Planitia. Broad linear ridges and groups of hills in this region are part of Phlegra Dorsa (ridges) and Phlegra Montes (hills). … Continue reading

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THEMIS: Channel deposits in Terra Sabaea

THEMIS Image of the Day, April 24, 2018. The northern margins of Arabia Terra and Terra Sabaea contain many unnamed channels. This channel is located in Terra Sabaea. The channel flow is toward the top of the image. This channel … Continue reading

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THEMIS: Echus Chasma mega-gullies

THEMIS Image of the Day, April 23, 2018. This VIS image shows one of the mega-gullies that empties into Echus Chasma. Echus Chasma is approximately 4km deep in this region, and is the source of Kasei Valles. More THEMIS Images … Continue reading

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THEMIS: Flood-scoured floor of Lobo Vallis

THEMIS Image of the Day, April 20, 2018. Today’s VIS image shows a small portion of Lobo Vallis near where it recombines with Kasei Valles and empties into Chryse Planitia. Kasei Valles is a huge channel system that drained the … Continue reading

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THEMIS: Big blocky faults in Sacra Fossae

THEMIS Image of the Day, April 19, 2018. Located on the western margin of Lunae Planum, Sacra Fossae is a group of linear depressions. The right angle turns and uniform width seen in this VIS image indicate that these channels … Continue reading

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THEMIS: Interweaving channels of Osuga Valles

THEMIS Image of the Day, April 18, 2018. Osuga Valles is a complex set of channels located near Eos Chasma. The channels were likely cut by multiple episodes of flowing water. More THEMIS Images of the Day by geological topic. … Continue reading

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THEMIS: Blast scour at Bonestell Crater

THEMIS Image of the Day, April 17, 2018. Bonestell Crater is a relatively young crater located in Acidalia Planitia. The grooved surface of the ejecta blanket is evident in this VIS image. The grooves were likely eroded by the outward … Continue reading

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THEMIS: Old craters in an even older land

THEMIS Image of the Day, April 16, 2018. This VIS image shows several craters. The interior of the central one has retained much of the original topography, including the central peak. The floor has not been smoothed by deposits of … Continue reading

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THEMIS: Landslides in Tyrrhena Terra

THEMIS Image of the Day, April 13, 2018. This VIS image is located in an unnamed crater within Tyrrhena Terra. The ‘mitten’ shaped feature extends from the crater rim (bottom of frame) onto the crater floor. Radial surface grooves and … Continue reading

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THEMIS: Channels cutting across channels in Olympica Fossae

THEMIS Image of the Day, April 12, 2018. Olympica Fossae is a complex channel located on the volcanic plains between Alba Mons and Olympus Mons. The sinuosity of the large channel in the middle of the image indicates that this … Continue reading

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