Tag Archives: outflow channels

THEMIS: Ares Valles’ long winding channel

THEMIS Image of the Day, July 25, 2018. Today’s VIS image shows part of Ares Vallis, one of the large channels in Margaritfer Terra that empty into Chryse Planitia. See more THEMIS Images of the Day by geological subject.

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

THEMIS: Flood-scoured island-mesa in Kasei Valles

THEMIS Image of the Day, July 9, 2018. Today’s VIS image is located near the beginning of Kasei Valles. At the top of the image is the relative high land of Lunae Planum. The Kasei Valles channel is just below. … Continue reading

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

Water floods and effusive volcanism in Hrad Vallis

[Editor’s note: From a paper by Christopher Hamilton and four co-authors recently published in the Journal of Geophysical Research.] • The Hrad Vallis region of Mars includes evidence of both aqueous flooding and effusive volcanism • Lava flows in the … Continue reading

Posted in Reports | Tagged , , , , , | Comments Off

THEMIS: Flood-sculpted ridge in Shalbatana Vallis

THEMIS Image of the Day, June 15, 2018. This VIS image shows a section of Shalbatana Vallis. Shalbatana Vallis is one of many channels that empty into Chryse Planitia. More THEMIS Images of the Day by geological topic.

Posted in Reports | Tagged , , , , , , , , , | Comments Off

THEMIS: Dry waterfall at edge of Shalbatana Vallis?

THEMIS Image of the Day, June 7, 2018. This VIS image shows a section of Shalbatana Vallis. Shalbatana Vallis is located in Xanthe Terra. Shalbatana is an outflow channel carved by massive floods from escaping groundwater whose source lies far … Continue reading

Posted in Reports | Tagged , , , , , , , , , | Comments Off

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

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

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

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

Giant channels carved by repeated small floods?

Geomorphologists who study Earth’s surface features and the processes that formed them have long been interested in how floods, in particular catastrophic outbursts that occur when a glacial lake ice dam bursts, for example, can change a planet’s surface, not … Continue reading

Posted in Reports | Tagged , , , , | Comments Off

THEMIS: Flood scours in Lobo Vallis

THEMIS Image of the Day, October 18, 2016. Today’s false color image shows part of Lobo Vallis, which is part of the larger Kasei Valles, a giant flood channel. The dark blue material is most likely basaltic sand. The THEMIS VIS … Continue reading

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: A streamlined form in Lethe Vallis

This image shows a portion of Lethe Vallis, an outflow channel that also transported lava. Another investigation of this area (Balme et al., 2011) discovered a repeat pattern of dune-like forms in the channel interpreted as fluvial dunes (or, giant … Continue reading

Posted in Reports | Tagged , , , , , , , , , | Comments Off