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New Book Explores Water along Devil’s Highway

By Guest PostAugust 19, 2012Environmentarizona, armchair explorer, bill broyles, borderland explorers, borrego tank, cactus, desert aficionados, desert flats, devils highway, elcamino del diablo, gary paul nabhan, gayle harrison hartmann, gold seekers, high tanks, lava flows, mary charlotte thurtle, mexico border, natural watering holes, rock basin, sand dunes, thomas e sheridan, tinajas altas, water

Written by an expert cast of UA affiliates, “Last Water on the Devil’s Highway: A Cultural and Natural History of Tinajas Altas” is perfect for desert aficionados and armchair explorers wishing to learn more about southwestern Arizona.

The University of Arizona Press, in collaboration with the University of Arizona Southwest Center, has announced the release of “Last Water on the Devil’s Highway: A Cultural and Natural History of Tinajas Altas.“

Written by an expert cast of UA affiliates and well-known Tucsonans, this book is perfect for desert aficionados and armchair explorers wishing to learn more about the High Tanks, the iconic natural watering holes of southwestern Arizona.

The Devil’s Highway – El Camino del Diablo – crosses hundreds of miles and thousands of years of Arizona and Southwest history. This heritage trail follows a torturous route along the U.S. Mexico border through a lonely landscape of cactus, desert flats, drifting sand dunes, ancient lava flows and searing summer heat. (more…)

The Flowing Sands of Mars

By Guest PostMay 13, 2012ScienceAntarctica, caltech, craters, digital terrain model, doug mccuistion, dtm, earth, flowing sands, geological processes, gullies, high speed winds, hirise camera, jean philippe avouac, mars, martian equator, martian landscape, martian surface, mro, NASA, nathan bridges, nili patera, red planet, rocks on mars, sand dunes, sarah mattson, valleys

Sand dunes on Mars move not unlike those on Earth, despite a much thinner atmosphere and weaker winds, as revealed by images taken with the UA-led HiRISE camera.

NASA’s Mars Reconnaissance Orbiter, or MRO, has revealed that movement in sand dune fields on the Red Planet occurs on a surprisingly large scale, about the same as in dune fields on Earth.

This is unexpected because Mars has a much thinner atmosphere than Earth is only about 1 percent as dense, and its high-speed winds are less frequent and weaker than Earth’s.

For years, researchers debated whether or not sand dunes observed on Mars were mostly fossil features related to past climate, rather than currently active. In the past two years, researchers using images from MRO’s High Resolution Imaging Science Experiment, or HiRISE, camera have detected and reported sand movement. (more…)

Northern Mars Landscape Actively Changing

By Guest PostFebruary 5, 2011Sciencecandice hansen, carbon dioxide ice, high resolution imaging science experiment, hirise, hirise camera, image, landscape, mars, martian dunes, martian years, nasa orbiter, north polar cap, northern mars, sand dunes, serina diniega, texas

Sand dunes in a vast area of northern Mars long thought to be frozen in time are changing with both sudden and gradual motions, according to research using images from a NASA orbiter.

These dune fields cover an area the size of Texas in a band around the planet at the edge of Mars’ north polar cap. The new findings suggest they are among the most active landscapes on Mars. However, few changes in these dark-toned dunes had been detected before a campaign of repeated imaging by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter, which reached Mars five years ago next month. (more…)

Desertification – Are Deserts Expanding??

By ShamsNovember 24, 20071 commentEnvironmentalternative livelihood, Antarctica, Bedouins, desertification, deserts, Great Saharan Desert, nomads, sand dunes, sandstorms

Deserts are everywhere. In both Americas, Australia, the Great Saharan Desert in Africa, Middle East, India and in China. Deserts are what we understand when we mean ‘deserts’ – unpopulated barren areas as there’s of lack of enough rainfall. That’s true.

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Tag Archives: sand dunes

New Book Explores Water along Devil’s Highway

The Flowing Sands of Mars

Northern Mars Landscape Actively Changing

Desertification – Are Deserts Expanding??