Tag Archives: Thermal Emission Imaging System

THEMIS: Rim of two craters

THEMIS Image of the Day, December 11, 2018. In the center of this VIS image is a crater rim, which is shared by two craters. The crater with the deeper floor is at the bottom of the image, and this … Continue reading

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THEMIS: Gullies in Noachis Terra

THEMIS Image of the Day, December 10, 2018. Numerous channels, also called gullies, dissect the rim of this unnamed crater in Noachis Terra. (Note that the lighting in this image comes from the lower right.) At upper right lies a … Continue reading

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THEMIS: Graben cuts across Claritas Fossae crater

THEMIS Image of the Day, December 7, 2018. Located on the northern margin of Aonia Terra, this unnamed crater interacts with one of the fossa, also called a graben. In this image, it is apparent that the tectonic depression crosses … Continue reading

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THEMIS: Halley Crater dunes

THEMIS Image of the Day, December 6, 2018. Halley Crater is located on the western side of Argyre Planitia. Sand dunes cover part of the crater floor. The dunes’ dark tone indicates they are free from dust. This in turn … Continue reading

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THEMIS: Galle Crater floor features

THEMIS Image of the Day, December 5, 2018. This VIS image shows a small portion of the floor of Galle Crater. This large crater is located on the eastern side of Argyre Planitia. The floor of Galle Crater contains many … Continue reading

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THEMIS: Tectonics and volcanism in Syria Planum

THEMIS Image of the Day, December 4, 2018. This VIS image shows a linear depression in Syria Planum. Volcanic activity, including broad shield volcanoes and extensive volcanic plains created this region of the Tharsis system south of Noctis Labyrinthus. Linear … Continue reading

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THEMIS: Crater-wall gullies in Aonia Terra

THEMIS Image of the Day, December 3, 2018. Today’s VIS image shows an unnamed crater located in Aonia Terra. Numerous gullies dissect the inner crater rim. This crater impacted onto the rim of the much larger Slipher Crater. See more … Continue reading

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THEMIS: Solis Planum lava flows and graben

THEMIS Image of the Day, November 30, 2018. Today’s VIS image shows part of Solis Planum. Both volcanic and tectonic forces created the features in this image. The linear features that run diagonally across the image are fault features called … Continue reading

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THEMIS: Youngish crater in Noachis Terra

THEMIS Image of the Day, November 29, 2018. This VIS image shows half of an unnamed crater in Noachis Terra. The complex rim and rough floor are indicative of a relatively young crater. With time and erosion, craters fill in … Continue reading

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THEMIS: Active dunes in Noachis Terra

THEMIS Image of the Day, November 28, 2018. Today’s VIS image shows a sand sheet with surface dunes forms on the floor of an unnamed crater in Noachis Terra. Dark dunes indicate active dunes: Winds stir the sand, which kicks … Continue reading

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