Navigation Links
Tracking sediments' fate in largest-ever dam removal
Date:3/7/2013

Salmon are beginning to swim up the Elwha River for the first time in more than a century. But University of Washington marine geologists are watching what's beginning to flow downstream sediments from the largest dam-removal project ever undertaken.

The 108-foot Elwha Dam was built in 1910, and after decades of debate it was finally dismantled last year. Roughly a third of the 210-foot Glines Canyon Dam still stands, holding back a mountain of silt, sand and gravel.

Removal of the upper dam was halted in January while crews repair a water-treatment plant near Port Angeles that got clogged with leaves and other debris. For engineers, this phase may be the trickiest part of the dam-removal project. For oceanographers, "the best is yet to come," said Charles Nittrouer, a UW professor of oceanography and of Earth and space sciences.

It turns out there is even more sediment than originally thought about 34 million cubic yards. That's more than 3 million truck loads, enough to bury all of Seattle in a layer almost 3 inches thick.

Aerial photos show sediment starting to fan out around the river's mouth.

"One of the risks of just looking at these beautiful plume pictures is that you really don't know the extent of where that sediment actually ends up," said Andrea Ogston, a UW associate professor of oceanography. "Our focus is looking at what's happening very close to the seabed how it's going to move, where it's going to get to, what's its ultimate fate."

For the past five years, Ogston and Nittrouer and their students have been studying the sediment around the river mouth, initially with the support of Washington Sea Grant, to understand the condition before the dams' removal. Their current project, funded by the National Science Foundation, is looking for events that could act like a hundred-year storm and bury the sediment deep in the ocean.

The UW researchers have instruments to track particles in
'/>"/>

Contact: Hannah Hickey
hickeyh@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Tracking the evolution of antibiotic resistance
2. Tracking gene flow in marine plant evolution
3. Tracking invasive cheatgrass role in larger, more frequent Western fires
4. Tracking pollution from outer space
5. Researchers use GPS tracking to monitor crab behavior
6. New turtle tracking technique may aid efforts to save loggerhead
7. Precision motion tracking -- thousands of cells at a time
8. TB outbreaks could be solved by DNA tracking
9. Tracking fish through a coral reef seascape
10. Tracking shuttle exhaust reveals more information about atmospheric winds
11. Vitamin B12 deficiency: Tracking the genetic causes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Tracking sediments' fate in largest-ever dam removal
(Date:8/29/2014)... University of Texas Medical Branch at Galveston has gone on ... completely protect monkeys against a lethal dose of Ebola virus ... the disease is severe. , Thomas Geisbert, professor of microbiology ... discussing advances in Ebola treatment research. The filoviruses known as ... of pathogens, with fatality rates of up to 90 percent. ...
(Date:8/29/2014)... connections in transcription factor networks (TFNs) to evaluate the ... in PLOS Computational Biology in August. ... a network,s resilience against mutations. , "In simulations, ... models has a greater effect on robustness than varying ... Dov A. Pechenick, PhD, lead author and former researcher ...
(Date:8/29/2014)... This news release is available in German . ... of chemical signals between organisms is considered the oldest ... social interactions between conspecifics, for example, the sexual attraction ... trigger social responses and to coordinate reproductive behavior in ... at the University of the Algarve in Faro, Portugal, ...
Breaking Biology News(10 mins):Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2Assortativity signatures of transcription factor networks contribute to robustness 2Ready for mating at the right time 2Ready for mating at the right time 3
... The most common cause of a mare,s reduced fertility is ... caused by the bacteria , Streptococcus equi subspecies ... negative for streptococci have a dormant infection without showing clinical ... to reduce the fertility of the mares," says Professor Anders ...
... Researchers at the Johns Hopkins University in Baltimore, Md., ... have found that nonself-donated cells (allografts) better survive implantation ... grafts are injected into the striatum (STR) of the ... region. In their study, all FM grafts were ...
... being passive wallflowers, are "secret gardeners" that actively engineer their ... team of scientists from Duke University and the University of ... that the distribution of plants within a marsh is a ... that,s where conditions like soil aeration and salinity best meet ...
Cached Biology News:Researchers make racehorses fertile 2Impact of stem cell transplantation location in brain a crucial factor for cell survival 2Marsh plants actively engineer their landscape 2
(Date:8/28/2014)... (PRWEB) August 28, 2014 SPIE Fellow ... Physics and Optical Science and Director of the Center ... North Carolina at Charlotte, and co-founder and Chairman of ... serve as the 2015 Vice President of SPIE, the ... President Philip Stahl announced recent election results at the ...
(Date:8/28/2014)... are important devices in spintronics, an electronic which ... electrons but also on their spin and the ... electric into magnetic signals and vice versa. Recently, ... the Institute of Physics at Johannes Gutenberg University ... Prague, and Japan, has for the first time ...
(Date:8/28/2014)... 2014 Sterlitech is proud to announce ... its stable of products . These additional ... and include membrane filters with surface charges. ... demand for our membrane process testing equipment, and correspondingly, ... sheet membranes,” explains Sterlitech President Mark Spatz. “The ...
(Date:8/28/2014)... this month, a report was created by Colorado ... Force on the performance of vehicles using an eco-friendly, ... fuel made from mustard seeds, offered great potential as ... friendly future. In fact, every branch of the U.S. ... foreign oil over the next few years. They will ...
Breaking Biology Technology:Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2A new, tunable device for spintronics 2A new, tunable device for spintronics 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5
... U.S. Asthma Control, RESEARCH TRIANGLE PARK, N.C. and ... with asthma and more than a quarter of,children with ... have their disease well controlled, according to the Asthma ... of the American,Thoracic Society meeting in Toronto., The ...
... May 20 PreViser Corporation,( http://www.previser.com ), a ... assessment technology to the dental profession,announced today the ... (OHI) Ltd ( http://www.previser.co.uk ) of Birmingham, England ... Kingdom and the,Republic of Ireland., OHI Ltd ...
... living computers by genetically altering bacteria. The findings of ... of Biological Engineering, demonstrate that computing in living cells ... applications including data storage and as a tool for ... from the biology and the mathematics departments of Davidson ...
Cached Biology Technology:Asthma Uncontrolled in More Than 40 Percent of Adults With the Disease, New Landmark Survey Shows 2Asthma Uncontrolled in More Than 40 Percent of Adults With the Disease, New Landmark Survey Shows 3PreViser and Oral Health Innovations Ltd Form UK Partnership to Provide Oral Health Scoring and Risk Analysis 2Researchers bring new meaning to the term 'computer bug' 2
Goat polyclonal to MLH3 Immunogen: Synthetic peptide: RQSLQQSMPPCEPP (Human) from C Terminus of the protein sequence according to NP_055196....
Polyclonal Antibody to SHPRH...
Rabbit polyclonal to TetR ( Abpromise for all tested applications). Antigen: Synthetic peptide: AQKLGVEQPTLYWHVKNKR, corresponding to amino acids 31 - 49 of TetR...
Biotin anti-mouse Ly-49C/F/I/H...
Biology Products: