sumber dari: http://www.glassdoor.com/
Showing posts with label grand canyon. Show all posts
Showing posts with label grand canyon. Show all posts
Saturday, 15 March 2014
Grand Canyon 3D Pavement Artwork
sumber dari: http://explorethecanyon.com/kurt-wenner-grand-canyon-installation/
Monday, 24 February 2014
Wednesday, 4 September 2013
the Grand Canyon update August 2013
The Monsoons have been active during the last month making afternoons a bit more humid while often providing clouds to hide the sun and make the heat a bit more tolerable. Still a very busy vacation season here at the canyon with both the North and South Rims usually running at full capacity. Inner Canyon temps continue to linger in the over-100-degree range during the day, and 70s at night. Rim temperatures during the day are in the 90 degree range with 50s at night along the South Rim, and 80s (days) and 50s (nights) at the North Rim. Heat advisories remain in effect for the Inner Grand Canyon.
Reminder: Backcountry permit applications for trips starting in January, 2014 can be submitted by fax or by mail, on or after September 1, 2013.
sumber dari: blog.asenseofnature.com
'Grand Canyon' of Greenland Discovered Under Ice
3D view of the subglacial canyon, looking northwest from central Greenland
The age of discovery isn't over yet. A colossal canyon, the longest on Earth, has just been found under Greenland's ice sheet, scientists announced this week in the journal Science.
"You think that everything that could be known about the land surface is known, but it's not," said Jonathan Bamber, lead study author and a geographer at the University of Bristol in the United Kingdom. "There's still so much to learn about the planet."
The broad chasm is up to 2,600 feet (800 meters) deep and 6 miles (10 km) wide, similar to America's Grand Canyon in scale, the researchers said. The distinctive V-shaped walls and flat bottom suggests water carved the buried valley, not ice, Bamber said. Though it is not the world's deepest canyon, it's the longest, handily besting the 308-mile-long (496 km) Yarlung Tsangpo Grand Canyon in China.
Many mysteries in what lies beneath
The discovery could raise as many questions as it answers. For instance, researchers have long puzzled over what happens to water under Greenland's interior ice sheet. Greenland bows inward like a soup bowl, yet water melting under the interior ice sheet seems to drain to the sea instead of pooling in the middle. Bamber and his colleagues think the northern canyon may route some of the meltwater into the ocean.The great river channel could explain the missing lakes under Greenland's interior ice sheet. The weight of the ice sheet pushes down the island's middle into a bowl-shaped basin. Given this saggy middle, scientists have long wondered why Greenland isn't filled with buried lakes, like Antarctica's Lake Vostok and Lake Whillans. The northern part of the canyon may drain meltwater, but farther inland, Bamber and his colleagues think the massive weight of ice pushes water elsewhere. (North vs. South Poles: 10 Wild Differences)
"It probably doesn't have water flowing through all of it today, given the interference by the ice overburden. However, when ice-free, water would channel through all of it," Siegert told LiveScience's OurAmazingPlanet.
And the newly discovered canyon could boost the breakup of one of the coastline's briskly retreating glaciers. The Greenland Grand Canyon dumps right into Petermann Glacier, which has dropped two massive icebergs in the past three years, each bigger than Manhattan.
"It's fair to say that a lot of work is now needed to work out the evolution of this feature and what it means for today's ice sheet," said study co-author Martin Siegert, a glaciologist at the University of Bristol. (Fly Over Greenland's Grand Canyon)
sumber dari: news.discovery.com
The Tuskegee Airmen
The Tuskegee Airmen on August 25, 2012 at the Grand Canyon Valle Airport.
sumber dari: grand-canyon-inn.com
teach young visitors about fossils
Allyson Mathis, Science and Education Outreach Coordinator, teaches young visitors about fossils in Grand Canyon National Park.
sumber dari: grand-canyon-inn.com
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