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Tag Archives: outflow channels
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 effusive volcanism, floods, Hrad Vallis, lava flows, outflow channels, volcanism
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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 Arizona State University, ASU, Chryse Planitia, Mars Odyssey, NASA, outflow channels, Shalbatana Vallis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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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 Arizona State University, ASU, Mars Odyssey, NASA, outflow channels, Shalbatana Vallis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, Xanthe Terra
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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
Posted in Reports
Tagged Arizona State University, ASU, Echus Chasma, gullies, Kasei Valles, Mars Odyssey, mega-gullies, NASA, outflow channels, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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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
Posted in Reports
Tagged Arizona State University, ASU, Chryse Planitia, Kasei Valles, Lobo Vallis, Mars Odyssey, NASA, outflow channels, scouring, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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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 canyons, catastrophic floods, Channeled Scablands, outburst floods, outflow channels
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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 Arizona State University, ASU, Kasei Valles, Lobo Vallis, Mars Odyssey, NASA, outflow channels, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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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 current ripples, High Resolution Imaging Science Experiment, HiRISE, Lethe Vallis, Mars Reconnaissance Orbiter, MRO, NASA, outflow channels, streamlined islands, University of Arizona
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HiRISE: Ancient streamlined islands of the Palos outflow channel
This image shows the northern terminus of an outflow channel located in the volcanic terrains of Amenthes Planum. The channel sources from the Palos impact crater to the south, where water flowed into the crater from Tinto Vallis and eventually … Continue reading
Posted in Reports
Tagged fluvial channels, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, outflow channels, Palos outflow channel, streambeds, streamlined islands, University of Arizona
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THEMIS: Flood-scoured Ravi Vallis
THEMIS Image of the Day, August 11, 2016. This VIS image is located in Ravi Vallis, a channel running from the highlands of Xanthe Terra to the complex lower elevation Hydraotes Chaos. The tear-drop shaped island near the center of … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Mars Odyssey, NASA, outflow channels, Ravi Vallis, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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