Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Oiled birds prompt study by UCSB experts

01.02.2005


Oil-coated birds turning up on southern California beaches in recent weeks have raised concern about potential oil sources. The Coal Oil Point seep field, located offshore and adjacent to the University of California, Santa Barbara, is one of the biggest natural marine oil and gas seeps in the world and is the predominant source of oil to southern California waters. Extensive oil slicks have been observed near Coal Oil Point since the recent severe storms pummeled the region in January. These slicks are significantly larger than typically seen in the area, including just before the storms. Since 1994, scientists at UCSB have been studying the Coal Oil Point seep field, including using sonar to map the seepage.


Aerial photos off Coal Oil Point of a small portion of the Coal Oil Point seep field. Typical oil emissions from this seep area are shown in the left image (Current is to west, left). Right image shows typical conditions observed since the winter storms (Current is to east, right). Photos courtesy of Ira Leifer, UCSB, and Chris McCullough, Calif Dept of Conservation, Division Oil and Gas.



Recently UCSB scientists participated in aerial surveys of the northern channel. Current oil emissions appear to be many times pre-storm levels, estimated at 4,200 gallons per day. (Photos at www.ia.ucsb.edu/pa/1233-seep/)

New areas of seepage have appeared and were confirmed by boat surveys. Scientists at UCSB are studying a possible relationship between the storms and these increased oil emissions.


Bruce Luyendyk, professor of marine geophysics at UCSB, poses two hypotheses for the apparently vast increase in oil seepage following the storms. "The rain may have changed the subsurface hydrology, creating higher driving pressure of the seepage," he said.

A second hypothesis is that sea floor tar and sediment blockages may have been removed by the storms, allowing an increase in the flow.

"Both oil and gas are coming out," explained Ira Leifer, a scientist with UCSB’s Marine Science Institute. "Gas drives the oil because it is lighter," he said. "We can measure the amount of gas with sonar because the sonar’s sound bounces off the bubbles. We also measure how much oil is escaping with the gas."

Gail Gallessich | EurekAlert!
Further information:
http://www.ucsb.edu

More articles from Ecology, The Environment and Conservation:

nachricht Safeguarding sustainability through forest certification mapping
27.06.2017 | International Institute for Applied Systems Analysis (IIASA)

nachricht Dune ecosystem modelling
26.06.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Touch Displays WAY-AX and WAY-DX by WayCon

27.06.2017 | Power and Electrical Engineering

Drones that drive

27.06.2017 | Information Technology

Ultra-compact phase modulators based on graphene plasmons

27.06.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>