The system has the potential to detect methane leaks from long-distance underground gas pipelines and gas fields, including coal seam gas extraction operations, and to measure methane emissions from animal production.
The researchers, based in the University’s Institute for Photonics and Advanced Sensing, have conducted a preliminary study and are developing the laser system for further testing.
“We hope to accurately measure methane concentrations up to a distance of 5km,” says project leader Dr David Ottaway, Senior Lecturer in the School of Chemistry and Physics.
“This will give us an ability to map methane over an area as large as 25 square kilometres in a very short time. At the moment current technology only allows detection at a single point source as it blows past the detector.”
The system uses laser-based remote sensing technology called DIAL. Laser pulses are emitted with alternate frequencies, one of which is absorbed by the methane. The methane concentration is measured by observing the difference between the amounts of light scattered back to the detector. The laser system will then be swept through a circle to determine the methane concentration over a wide area.
To produce a powerful cost-effective laser system, the researchers are developing an erbium-YAG laser source. These lasers have the advantage of emitting light that cannot be seen by humans and is not hazardous to the human eye ‒ important when the lasers are to be used in the environment and not confined to a regulated laboratory.
“We believe we are the only group working on an erbium-YAG DIAL system and we are very excited about the possibilities that this system could offer for reducing greenhouse gas emissions in a cost-effective manner,” Dr Ottaway says.
“Methane is a very important gas in terms of climate change. It absorbs radiation, which warms the atmosphere, at a rate more than 20 times larger than that of carbon dioxide. This technology has great potential to help reduce our methane emissions from gas pipeline leaks or from coal seam gas operations, and may be important for monitoring agricultural emissions over time.”Media Contact:
Dr David Ottaway | Newswise
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
An international team of researchers has discovered a new anti-cancer protein. The protein, called LHPP, prevents the uncontrolled proliferation of cancer cells in the liver. The researchers led by Prof. Michael N. Hall from the Biozentrum, University of Basel, report in “Nature” that LHPP can also serve as a biomarker for the diagnosis and prognosis of liver cancer.
The incidence of liver cancer, also known as hepatocellular carcinoma, is steadily increasing. In the last twenty years, the number of cases has almost doubled...
In just a few weeks from now, the Chinese space station Tiangong-1 will re-enter the Earth's atmosphere where it will to a large extent burn up. It is possible that some debris will reach the Earth's surface. Tiangong-1 is orbiting the Earth uncontrolled at a speed of approx. 29,000 km/h.Currently the prognosis relating to the time of impact currently lies within a window of several days. The scientists at Fraunhofer FHR have already been monitoring Tiangong-1 for a number of weeks with their TIRA system, one of the most powerful space observation radars in the world, with a view to supporting the German Space Situational Awareness Center and the ESA with their re-entry forecasts.
Following the loss of radio contact with Tiangong-1 in 2016 and due to the low orbital height, it is now inevitable that the Chinese space station will...
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.
They are united in their passion for OLED (organic light emitting diodes) lighting with all of its unique facets and application possibilities. Thus experts in...
A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...
For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.
In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...
19.03.2018 | Event News
16.03.2018 | Event News
13.03.2018 | Event News
22.03.2018 | Trade Fair News
22.03.2018 | Earth Sciences
22.03.2018 | Earth Sciences