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

the water and record them accumulating on the ocean floor. They are on high alert for a rapid response when the river floods and dislodges the sediment. When that happens, they want to be onsite to record as much data as possible and perhaps be the first to witness a rare geologic event.

In nature, deep-sea sediment flows triggered by earthquakes or extreme storms can be important for creating oil reserves and other geologic deposits, as a component of the global carbon cycle, and responsible for burying communication cables.

Computer models and the geologic record suggest that when the sediment is in high-enough concentrations, it goes directly to the ocean floor. Instead of the fresh river water floating on top of the seawater, the river water becomes denser than the sea, and the sediment-laden river water plunges below the ocean water.

For the Elwha, that path would take much of the sediment away from the coastline and deep into the Strait of Juan de Fuca.

"A surface plume is very much at the whim of the winds and tides, whereas these underflows are just going down the steepest gradient," Ogston said. "These are two very different mechanisms that would create very different impacts to the seabed."

The dams initially powered a pulp mill and were built unusually close to the ocean the upper dam is just 13 miles from the river mouth. Their removal provides a unique opportunity to study large river discharges.

"There is an understanding of the general type of flow, and people have predicted that it occurs in rivers, but no one has seen the smoking gun yet," Nittrouer said. "This is a chance to document a 100-year storm. It's really somewhat new territory."

So far there have been dramatic changes to the seabed in the shallows, but few changes below about 20 feet, Ogston said.

Where the sediment ends up is of practical interest. Sediment can make the water murky, creating conditions that make it
'/>"/>

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:12/22/2014)...  NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ("NXT-ID" ... growing mobile commerce market, announces it has retained famous pickpocket, ... 2015 International CES debut of the Wocket™ biometric smart wallet.  ... the NXT-ID booth January 6th and 7 th , 2015, ...
(Date:12/19/2014)... MOUNTAIN VIEW, Calif. , Dec. 18, 2014  23andMe, Inc., ... a study that pinpoints fine-scale differences in genetic ancestry of ... Since immigrants first arrived more than four hundred ... served as a meeting place for peoples from different continents. ...
(Date:12/17/2014)... 16, 2014 Valencell, a leader in performance biometric ... to industry leaders such as Intel, Jabra, Atlas, and ... wearable products. These products will be showcased at CES ... Vegas . "Our partners choose ...
Breaking Biology News(10 mins):NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 423andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2
... New results presented at 3rd European Lung Cancer Conference ... improve the diagnosis and treatment of malignant pleural mesothelioma, ... lungs caused by asbestos exposure. Micro RNAs ... small molecule that is more abundant in the blood ...
... Lugano-CH/Aurora-US-CO/Geneva-CH, 18 April 2012 -- A new genetic signature ... and objective information about which patients with early stage ... relapse following surgery, investigators report at the 3rd European ... new avenues for immunotherapy for lung cancer. Non-small ...
... to increase loblolly pine production in the Southeast has improved ... climate change, according to a new study by North Carolina ... that grow faster and produce more wood, and what this ... environmental quality by scrubbing as much carbon out of the ...
Cached Biology News:Promising developments in early diagnosis and treatment of mesothelioma 2Promising developments in early diagnosis and treatment of mesothelioma 3Promising developments in early diagnosis and treatment of mesothelioma 4Gene signature helps identify risk of relapse in lung cancer patients 2
(Date:1/22/2015)... RI (PRWEB) January 22, 2015 Protocol ... , The growing team of brand-neutral, independent consultants, Protocol ... Philip Rogers explained that over the years, his company ... , Moroso, Town of Plainfield, as well as others. ...
(Date:1/22/2015)... Madison, WI (PRWEB) January 22, 2015 Dr. ... at the 12th annual Scripps Natural Supplements Pre-Conference seminar on ... Supplements Conference is an annual continuing education conference for health ... 15th and included the topic of probiotics in health. Dr. ...
(Date:1/22/2015)... Jersey , 22 de enero de 2015  El Dr. ... hoy su llamada a nominaciones para 2015. Este prestigioso ... hecho, o tiene el potencial para hacer, contribuciones destacadas ... se aceptarán hasta el 15 de marzo de 2015 ...
(Date:1/22/2015)... 2015  Derma Sciences, Inc. (Nasdaq: DSCI ... wound care, announces that AMNIOEXCEL® and AMNIOMATRIX®, amniotic ... to the Premier, Inc. Regenerative Skin Grafting contract ... AMNIOEXCEL® and AMNIOMATRIX® product lines, which continue to ...
Breaking Biology Technology:Protocol Networks Brings Independent Technology Consulting to the Constitution State 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... Total acquisition price will be $215 million , ... for infectious disease , , CARLSBAD, ... (Nasdaq: ISIS ) and Abbott (NYSE: ABT ... the remaining equity ownership in Ibis Biosciences, Inc., an Isis subsidiary, ...
... ... (PRWEB) December 17, 2008 -- Facilitating the entry of ... analyzer, now updated to effortlessly examine not only the wireless interface ... but also the interface between the device CPU and the Bluetooth ...
... receives the AARC Zenith Award for Equipment and Service ... Anaheim , , IRVINE, ... ), the inventor of Pulse CO-Oximetry and Measure-Through-Motion and ... its remote monitoring and clinician notification system, Masimo Patient ...
Cached Biology Technology:Abbott Exercises Its Option to Acquire Ibis Biosciences, a Subsidiary of Isis 2Abbott Exercises Its Option to Acquire Ibis Biosciences, a Subsidiary of Isis 3Abbott Exercises Its Option to Acquire Ibis Biosciences, a Subsidiary of Isis 4Abbott Exercises Its Option to Acquire Ibis Biosciences, a Subsidiary of Isis 5Newly Available To Medical Device Manufacturers - Bluetooth Testing Equipment 2Newly Available To Medical Device Manufacturers - Bluetooth Testing Equipment 3AARC Presentation Cites Masimo Patient SafetyNet as Key Factor in 'Improving Patient Outcomes and Reducing Costs' in Post-Acute Care Facilities 2AARC Presentation Cites Masimo Patient SafetyNet as Key Factor in 'Improving Patient Outcomes and Reducing Costs' in Post-Acute Care Facilities 3AARC Presentation Cites Masimo Patient SafetyNet as Key Factor in 'Improving Patient Outcomes and Reducing Costs' in Post-Acute Care Facilities 4AARC Presentation Cites Masimo Patient SafetyNet as Key Factor in 'Improving Patient Outcomes and Reducing Costs' in Post-Acute Care Facilities 5
Peptide-affinity Purified Polyclonal Antibody to Sphingolipid Receptor Edg8/S1P5...
Peptide-affinity Purified Polyclonal Antibody to MAML1 / Mastermind Peptide with sequence VLPTCPMAEFALPR, from N Terminus of the protein sequence according to NP_055572....
DNA sequencing - plasmids or PCR fragments, 3-7 working days service....
LEAF™ Purified anti-human/mouse/rat ICOS...
Biology Products: