Tag Archives: catastrophic floods

THEMIS: Streamlined islands in Athabasca Valles

Posted on July 2, 2019 by rburnham

THEMIS Image of the Day, July 2, 2019. This VIS image shows part of the channel called Athabasca Valles. Several streamlined islands are visible at the top of the image. The source of the flood was likely an outburst of … Continue reading →

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Did Mars Pathfinder explore edge of northern ocean?

Posted on March 19, 2019 by rburnham

NASA’s first rover mission to Mars, the Pathfinder, imaged an extraterrestrial marine spillover landscape 22 years ago, according to a new paper by Planetary Science Institute Senior Scientist Alexis Rodriguez. The landing site is on the spillway of an ancient … Continue reading →

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HiRISE: Erosion within Cerberus Fossae

Posted on October 8, 2018 by rburnham

A Context Camera image shows a small bench in the middle of the Cerberus Fossae at the head of Athabasca Valles. Small cataracts appear on this bench. Do these reflect erosion as water drained back into the subsurface at the … Continue reading →

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Giant channels carved by repeated small floods?

Posted on October 18, 2016 by rburnham

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 →

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