Navigation Links
Turning down the dial: Ocean energy development with less sound
Date:6/21/2012

SEQUIM, Wash. The rise of ocean infrastructure development to tap energy sources such as tides, offshore wind and natural gas will require more pile driving, the practice of pounding long, hollow steel pipes called piles into the ocean floor to support energy turbines and other structures. But pile driving creates loud, underwater booms that can harm fish and other marine animals.

Many scientists and regulators have assumed that limiting the combined amount of sound created during the course of a pile driving project can minimize harm to animals. But new research published in PLoS ONE indicates that if an individual blow to a pile rises above a particular sound level, fish can be irreparably harmed. The finding has led scientists to recommend the first-ever sound threshold for pile driving that is based on actual fish responses instead of estimates. It's hoped that regulators will use the threshold to help evaluate pile driving project applications.

"Our results can help regulators permit ocean development while also protecting marine life," said bioacoustician Michele Halvorsen, who led the research for Battelle, which manages the Department of Energy's Pacific Northwest National Laboratory. "This is the first research that used controlled laboratory tests to reliably measure the affects of pile driving on fish."

Halvorsen conducts research at PNNL's Marine Sciences Laboratory in Sequim, Wash.

Under pressure

Hitting a steel pile with a large hammer produces sound that causes water pressure changes that impact fish. Sudden changes in water pressure can cause gases such as oxygen to come out of fish blood faster than normal, leading to a decompression sickness much like the bends that divers experience when they rise to the surface too fast. Pressure changes also affect a fish's swim bladder, an internal, air-filled sac that helps the fish maintain weightlessness at different water depths. Alternating pressure changes cause the sw
'/>"/>

Contact: Franny Whtie
franny.white@pnnl.gov
509-375-6904
DOE/Pacific Northwest National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Turning off small RNA
2. NOAA scholarship awarded to Jan Vicente to study the impact of ocean acidification on marine sponges
3. Stanford researchers help predict the oceans of the future with a mini-lab
4. JRC and US NOAA enhance cooperation on climate, weather, oceans and coasts
5. New study by WHOI scientists provides baseline measurements of carbon in Arctic Ocean
6. Latest Southern Ocean research shows continuing deep ocean change
7. Plastic trash altering ocean habitats, Scripps study shows
8. First satellite tag study for manta rays reveals habits and hidden journeys of ocean giants
9. Scientists provide first large-scale estimate of reef shark losses in the Pacific Ocean
10. Wind pushes plastics deeper into oceans, driving trash estimates up
11. Ocean acidification linked to larval oyster failure
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Turning down the dial: Ocean energy development with less sound
(Date:8/20/2014)... therapy developed by researchers at the University of Missouri ... from a life-threatening heart condition caused by muscular dystrophy. ... Yi Lai, Ph.D., the leading author of the study ... Medicine,s Department of Molecular Microbiology and Immunology. "This is ... lead to a treatment for people with this devastating ...
(Date:8/20/2014)... 1 (PS1) absorbs light and its energy is ... to biomass. Photovoltaic devices, mostly build from silicon ... electricity. One approach for the development of cheaper ... with the isolated membrane protein complexes of photosynthesis. ... stable PS1 from thermophilic cyanobacteria that live in ...
(Date:8/19/2014)... to decrease China,s increasing caesarean section rate, suggests a ... An International Journal of Obstetrics and Gynaecology (BJOG) . ... rates in the world. Of 16 million babies born ... exact rate is not known, the current Chinese language ... rates ranging from 36% to 58%. However, before the ...
Breaking Biology News(10 mins):Gene therapy protects mice from lethal heart condition, MU researchers find 2A semi-artificial leaf faster than 'natural' photosynthesis 2Is China's 50 percent cesarean section delivery rate too high? 2Is China's 50 percent cesarean section delivery rate too high? 3
... urine test for prostate cancer that measures minute fragments ... through the University of Michigan MLabs. The new testMi-Prostate ... increases physicians, ability to pick out high-risk prostate tumors ... of thousands of men avoid unnecessary biopsies. The ...
... 2013 MedNet Solutions , a global life ... is pleased to announce that Accelovance , an ... phase Oncology, Vaccines and General Medicine development, has joined ... .    Designation as an iMedNet Partner will ...
... the first ever interior 3D map of Italy,s iconic Leaning ... system. Developed by the CSIRO, Australia,s national science agency, ... a laser scanner that sways on a spring to capture ... an operator can walk through it. Specialised software then converts ...
Cached Biology News:Prostate Cancer Foundation announces new urine test for prostate cancer available 2Prostate Cancer Foundation announces new urine test for prostate cancer available 3MedNet Solutions Proudly Welcomes Accelovance To The iMedNet Partner Program 2MedNet Solutions Proudly Welcomes Accelovance To The iMedNet Partner Program 33D mapping is a 'Pisa' cake for Aussie scientists 2
(Date:8/21/2014)... (PRWEB) August 21, 2014 Ontotext ... today by Ontotext . Now the same ... analysis of structured and unstructured data is available to ... cost of enterprise technology. Organizations that do not have ... data management can use S4 since there is no ...
(Date:8/21/2014)... On Wednesday of last week RENU 28, the world's ... became available for purchase in Australia and New Zealand, and ... 28 works is, if you think about the definition of ... cellular renewal within your body. If you think about the ... cellular renewal. What RENU 28 does is it works with ...
(Date:8/20/2014)... lessons often have it that American Indians largely were ... pox, influenza and tuberculosis brought to the New World ... about 20 million people lived in the Americas shortly ... were killed by European diseases., But new research led ... and Johannes Krause of the University of Tubingen in ...
(Date:8/20/2014)... (PRWEB) August 20, 2014 High ... and apply the most complete climate and Earth ... demanding climate change issues. , Eight national laboratories, ... with the National Center for Atmospheric Research, four ... new effort. Other participating national laboratories include Argonne, ...
Breaking Biology Technology:Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 3Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 4RENU 28 Skin Care Now Available in Australia and New Zealand 2Unusual discovery leads to fascinating tuberculosis theory 2Unusual discovery leads to fascinating tuberculosis theory 3New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3
... be allowed to tax Internet usage, in a move that ... hole in the state budget. , ,The federal measure to ... , R-Wis., who said home users could save around a ... Tax Nondiscrimination Act, a tech-neutral plan that exempts all Internet ...
... Dark Ages, where marks were burned onto cattle. On ever-so-slowly-evolving minds ... solid impression and provides a daily dose of comfort. Belonging to ... a security blanket. A warm fuzzy feeling when a huge name ... craves to carry something with a logo, color and stripes, wear ...
... Wis. The North Carolina simulated learning company ... the Croquet Project at UW-Madison, a graphical communications ... trade show in Orlando that it has begun developing software ... applied to military and commercial avenues. , ,What were doing ...
Cached Biology Technology:State faces revenue drop as federal Internet tax ban passes House 2The black hole of corporate branding 2The black hole of corporate branding 3The black hole of corporate branding 4UW open-source 3D environment tapped for commercial development 2
... software, PC, is used to perform ... obtained from the Experion automated electrophoresis ... electropherogram and simulated gel views and ... in a Results table. This software ...
... use in the Microsart e.motion are sterile-sealed, without ... a specially designed individual package on a band. ... of membrane filter units ensures that they are ... sealed band guarantees uniform dispensing of the individual ...
... that will help protect your PCR runs ... work area prior to use, reducing the ... Containment features reduce the chance of airborne ... for a clear view, an acid-resistant black ...
...
Biology Products: