The law of the landscape for glaciers?October 08, 2015
Fast glaciers are much more effective at gouging landscapes than slow-moving ones, a new study finds. The results may explain a phenomenon that has long puzzled scientists - why long-term erosion rates from glaciers are so much lower in Polar Regions, where glaciers move more slowly. The world over, glaciers erode the land at variable rates, with some of the most rapid glacial erosion happening in mid-latitude climates. This process has been ongoing for ages, carving out valleys, fjords and mountains, yet scientists don't fully understand it, in part because studying the ice-bedrock interface of glaciers is so difficult. Here, Frederic Herman et al. focused on the Franz Joseph Glacier in New Zealand, studying its movement over a five-month period in 2013 and 2014 with remote sensing. At the same time, they quantified erosion rates beneath the glacier using observations of the amount of sediment discharged at its edge. With the velocity and erosion data, the researchers constructed a law for glacial erosion that captures the variability seen globally, in different climate zones. Their work reveals erosion to be highly sensitivity to small variations in topographic slope and precipitation, the researchers say, and it suggests that fast glaciers are more effective landscape gougers than their slow-moving counterparts. The results of Herman et al. help explain the impact of glaciation on mountainous landscapes during Earth's history.
American Association for the Advancement of Science
Related Glaciers Articles:
Glaciers around the world are disappearing before our eyes, and the implications for people are wide-ranging and troubling, Twila Moon, a glacier expert at the University of Colorado Boulder, concludes in a Perspectives piece in the journal Science today.
The warming climate has dramatically reduced the size of 39 glaciers in Montana since 1966, some by as much as 85 percent, according to data released by the U.S.
Microbes in streams flowing on the surface of glaciers in the Arctic and Antarctic may represent a previously underestimated source of organic material and be part of an as yet undiscovered 'dynamic local carbon cycle,' according to a new paper published by researchers supported by the National Science Foundation.
A 'Snowball Earth' event actually took place 100 million years earlier than previously projected.
Glaciologists have uncovered large valleys in the ocean floor beneath some of the massive glaciers flowing into the Amundsen Sea in West Antarctica.
Tying an individual glacier's retreat to climate change has been controversial.
Icebergs contribute more meltwater to Greenland's fjords than previously thought, losing up to half of their volume as they move through the narrow inlets, according to new research.
A new study published in The Cryosphere, an European Geosciences Union journal, has found that Bolivian glaciers shrunk by 43 percent between 1986 and 2014, and will continue to diminish if temperatures in the region continue to increase.
Historic changes to Antarctic sea ice could be unravelled using a new technique pioneered by scientists at Plymouth University.
The role of red pigmented snow algae in melting Arctic glaciers has been strongly underestimated, suggests a study to be published in Nature Communications on June 22.
Related Glaciers Reading:
Glaciers (A Tin House New Voice)
by Alexis M. Smith (Author)
Glaciers unfolds internally, recalling the work of writers such as Jean Rhys, Marguerite Duras, and Virginia Woolf, and portrays how the fleeting moments of one day can reveal an entire life.Isabel is a single, twentysomething thrift-store shopper and collector of remnants, things cast off or left behind by others. Glaciers follows Isabel through a day in her life in which work with damaged books in the basement of a library, unrequited love for the former soldier who fixes her computer, and dreams of the perfect vintage dress move over a backdrop of deteriorating... View Details
Glaciers: The Politics of Ice
by Jorge Daniel Taillant (Author)
Though not traditionally thought of as strategic natural resources, glaciers are a crucial part of our global ecosystem playing a fundamental role in the sustaining of life around the world. Comprising three quarters of the world's freshwater, they freeze in the winter and melt in the summer, supplying a steady flow of water for agriculture, livestock, industry and human consumption. The white of glacier surfaces reflect sunrays which otherwise warm our planet. Without them, many of the planet's rivers would run dry shortly after the winter snow-melt. A single mid-sized glacier in high... View Details
Icebergs, Ice Caps, and Glaciers (Rookie Read-About Science)
by Allan Fowler (Author)
Describes the characteristics, size, and movement of icebergs, ice caps, and glaciers View Details
Glaciers and Glaciation, 2nd edition (Hodder Arnold Publication)
by Douglas Benn (Author), David J A Evans (Author)
Glaciers and Glaciation is the classic textbook for all students of glaciation. Stimulating and accessible, it has established a reputation as a comprehensive and essential resource.
In this new edition, the text, references and illustrations have been thoroughly updated to give today's reader an up-to-the minute overview of the nature, origin and behaviour of glaciers and the geological and geomorphological evidence for their past history on earth.
The first part of the book investigates the processes involved in forming glacier ice, the nature of... View Details
by Audible Studios
Since that fateful day she was snatched from her job and turned into a Vampire, Mandy's life has sucked - literally. Forced to become an assassin for the Vampire Council, she finds solace in taking out the scumbag rogues she's often assigned to kill. Things go south when she realizes her next mark is an old coworker from her human days...a seriously hot one, who she had deep feelings for.
Worse, the council was wrong. He's not a villain, but a protector, and one she refuses to kill, regardless of orders. Glacier's astonished to come face to face with Mandy in a dark alley. Even... View Details
Glaciers (Natural Wonders)
by Mari Schuh (Author), Gail Saunders-Smith (Contributor)
Large masses of ice move slowly across the land. Over thousands of years, glaciers greatly shaped the land. Read Glaciers to find out how this landform continues to change earth. View Details
Glacier and Waterton Lakes National Parks (National Geographic Trails Illustrated Map)
by National Geographic Maps - Trails Illustrated (Author)
• Waterproof • Tear-Resistant • Topographic Map
National Geographic's Trails Illustrated map of Glacier and Waterton Lakes National Parks offers unparalleled detail for outdoor enthusiasts exploring the pristine landscape of forests, mountains, lakes, and meadows within these two spectacular parks. Created in partnership with local land management agencies, this expertly researched map features key areas of interest including Many Glacier, Great Bear Wilderness, Flathead National Forest, Hungry Horse Reservoir, Lake McDonald, Flathead River, St. Mary Lake,... View Details
Hiking Glacier and Waterton Lakes National Parks: A Guide to the Parks' Greatest Hiking Adventures (Regional Hiking Series)
by Erik Molvar (Author)
Discover the wonder of these two spectacular parks as Hiking Glacier and Waterton Lakes National Parks leads you along 850 miles of trail - from short nature hikes to backcountry treks. Veteran hiker Erik Molvar provides all the information you need to get the most out of hiking this International Peace Park with its glistening glaciers, scenic lookouts, peaceful lakes, and remote wilderness.
Look inside to find: Hikes suited to every ability
Mile-by-mile directional cues
GPS coordinates for all trailheads and backcountry campsites
An index of hikes... View Details
Glacier National Park: Adventuring with Kids
by Harley McAllister (Author), Abby McAllister (Author)
With this guide in hand, families won’t risk having their “Going-to-the-Sun” drive end up feeling more like “Going-to-the-Dark-Side” with grumpy, bored children. Instead they’ll be able to keep the whole family happy and ready for adventure!
• Fun for all ages in one of America’s most stunning parks
• Easy-to-follow organization based on park’s geography
• Kid-tested hikes, historic and natural sights, wildlife viewing, boating opportunities, and more
• Information on the Junior Ranger program found throughout the National Parks Service system
... View Details
Lonely Planet Banff, Jasper and Glacier National Parks (Travel Guide)
by Lonely Planet (Author), Brendan Sainsbury (Author), Michael Grosberg (Author)
Lonely Planet: The world's leading travel guide publisher
Lonely Planet Banff, Jasper & Glacier National Parks is your passport to the most relevant, up-to-date advice on what to see and skip, and what hidden discoveries await you. Go hiking and camping in the Backcountry in Banff; mountain-biking and horseback riding in Jasper, or wildlife spotting in Glacier; all with your trusted travel companion. Get to the heart of Banff, Jasper & Glacier National Parks and begin your journey now!
Inside the Lonely Planet Banff, Jasper &... View Details