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Tag Archives: valley networks
Sedimentology and hydrology of Amazonian paleo-fluvio-lacustrine system in Moa Valles
Planetary Geomorphology Image of the Month, March 31, 2016: Francesco Salese (Università D’Annunzio, Italy). Mars, is one of the planetary bodies where water flowed and where it may transiently flow today under certain conditions. Many martian paleodrainage systems and well-preserved … Continue reading
Posted in Reports
Tagged crater lakes, fluvial channels, lacustrine sediments, lake bed sediments, Moa Valles, valley networks
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HiRISE: Landforms in northern Terra Sirenum
Cartographer’s delight — landforms near a valley terminus in Northern Terra Sirenum. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, Terra Sirenum, University of Arizona, valley networks
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Explaining valley networks with climate models
The extensive valley networks on the surface of Mars were probably created by running water billions of years ago, but the source of that water is unknown. Now, a team of Penn State and NASA researchers is using climate models … Continue reading
Groundwater outflow in experiments and on Mars
Planetary Geomorphology Image of the Month, September 2, 2015: Wouter Marra (Universiteit Utrecht, Netherlands). There are many water-worn features on the planet Mars, which contribute to the reconstruction of former hydrological conditions. For example, dendritic valley networks show that there … Continue reading
Tallying up where the Martian carbon went
Scientists may be closer to solving the mystery of how Mars changed from a world with surface water billions of years ago to the arid Red Planet of today. A new analysis of the largest known deposit of carbonate minerals … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, atmosphere, carbon dioxide, carbonate minerals, Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Mars Odyssey, Mars Reconnaissance Orbiter, MRO, NASA, Nili Fossae, TES, THEMIS, Thermal Emission Imaging System, Thermal Emission Spectrometer, valley networks
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HiRISE: Rocky deposit
Beautiful Mars series. Rocky deposit that appears to emanate from Warrego Valles channel. More Beautiful Mars images.
Posted in Reports
Tagged Beautiful Mars, channels, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona, valley networks, Warrego Valles
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HiRISE: Complex valley network near Idaeus Fossae
Many valleys occur all over Mars that reveal an extensive ancient history of liquid water erosion. While these valley systems are typically now covered with fine soils and sand dunes, the overall scale and shape of the valleys reveals much … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, Idaeus Fossae, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona, valley networks
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‘Faint young Sun paradox’ a problem for Mars (and Earth, too)
Astronomers say that billions of years ago when the Sun was young, it shone with only 70 percent its current brightness, notes Robert Craddock (Smithsonian Institution). If that were true of today’s Sun,
Posted in Reports
Tagged atmosphere, climate, climate change, faint young Sun paradox, fluvial channels, Kepler Observatory, LPSC 2013, valley networks, water, wind
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Cloudburst rains needed to make Mars valley networks
In many regions, Mars has branching networks of valleys and channels that were carved by flowing water. A great many previous studies have tried to date when they were active and for how long, while others have looked in detail … Continue reading
Valley networks were eroded quckly
Networks of valleys cross much of the ancient surface of Mars, and along with deltas and other features these all show that the environment once warm and wet enough to sustain liquid water at the surface. But when? And for … Continue reading