Tag Archives: ASU

THEMIS: Mawrth Vallis in false color

THEMIS Image of the Day, February 18, 2019. Mawrth Vallis, a fluvial channel, cuts across the center of this false-color VIS image of Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined … Continue reading

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THEMIS: Kaiser Crater dunes

THEMIS Image of the Day, February 15, 2019. This VIS image is located in Kaiser Crater and shows several individual dunes. These dunes’ dark tone suggests they are free of dust, hence active. With continued winds sand dunes will move … Continue reading

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THEMIS: Sand sheet in Matara Crater

THEMIS Image of the Day, February 13, 2019. Today’s VIS image shows the sand deposit on the floor of Matara Crater. The deposit is thick enough to hide the underlying crater floor creating a sheet of sand. Upon this sheet … Continue reading

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THEMIS: Gullies in craters

THEMIS Image of the Day, February 12, 2019. Today’s VIS image shows part of an unnamed crater in Noachis Terra. Several craters in the southern hemisphere contain floor fill that has subsequently been eroded to form depressions in the fill … Continue reading

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THEMIS: Floods of once-molten rock spread across Daedalia Planum

THEMIS Image of the Day, February 11, 2019. Today’s VIS image shows part of the extensive volcanic flows that make up Daedalia Planum. The different layers and surface textures are due to flows at different times, or the affect of … Continue reading

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THEMIS: Noachis crater dunes

THEMIS Image of the Day, February 8, 2019. Sand dunes cover part of the floor of this unnamed crater in Noachis Terra. Their dark tint suggests they are relatively free of light-toned dust, hence probably active under winds currently. See … Continue reading

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THEMIS: Claritas Fossae channel

THEMIS Image of the Day, February 7, 2019. This VIS image shows a section of an unnamed channel. This channel starts within Claritas Fossae and empties down hill into Icaria Planum. See more THEMIS Images of the Day by geological … Continue reading

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THEMIS: Dune swirl in Terra Cimmeria

THEMIS Image of the Day, February 6, 2019. Sand dunes cover part of the floor of this unnamed crater in Terra Cimmeria. See more THEMIS Images of the Day by geological subject.

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THEMIS: Sea of dunes in Rabe Crater

THEMIS Image of the Day, February 5, 2019. This VIS image shows part of the floor of Rabe Crater. The floor of Rabe Crater has undergone several surface changing events. At some point after the crater was formed it was … Continue reading

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THEMIS: Polar cap layers at Ultima Lingula

THEMIS Image of the Day, February 4, 2019. Today’s VIS image is located along the margin of Ultima Lingula, where the polar cap meets the surrounding plains. The feature in the center of the image is a chasma where the … Continue reading

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