Researchers of the Leibniz Institute of Marine Sciences (IFM-GEOMAR) in Kiel, Germany received a special Christmas gift when their prototype profiling float was located and recovered from the open ocean, far offshore of the West African coast, after seven weeks of radio silence.
The still-experimental NEMO profiling float is designed to monitor CO2 within the ocean and had been deployed in October at an ocean monitoring station close to the Cape Verde Islands (www.tenatso.com). The freely floating robotic instrument records the depth distributions of salinity, temperature, oxygen and CO2 in the upper 200 m of the ocean at 30 hour intervals.
When at the surface the data are transmitted via the Iridium satellite system to the researchers in Kiel. Initially the float had functioned very well. But then after half a dozen dives the instrument stopped transmitting so that the worst – a total loss – was assumed. Maybe it had been destroyed by a fishing boat and sunk.
Maybe its radio antenna had been bitten off by a shark. A few days before Christmas, however, the Kiel group received their unexpected gift when signals from the float were received again. Position: 500 km north of Cape Verde, far away from land.
“We had really given up on it”, said Björn Fiedler of IFM-GEOMAR who is working on the float’s data for his Ph.D. studies. Then everything went very fast. A rescue mission was organized with colleagues of the Cape Verdean partner institute INDP (Instituto Nacional de Desenvolvimento das Pescas) in Mindelo. Fiedler departed for Cape Verde on the day after Christmas and embarked immediately on the INDP’s vessel ISLANDIA whose crew had been brought back from their festivities. The ISLANDIA reached the drifter’s reported location 30 hours later. There it was spotted and could be recovered after a short search. “This was like hitting the jackpot”, the excited Fiedler said. But it turned out even better: despite the interrupted satellite-link the instrument had continued to carry out its measurement routine as planned, and the full set of data had been stored.
The project’s leader, Prof. Arne Körtzinger, was very impressed by the quick action of the Cape Verdean partners: “They organized this mission at very short notice over the public holidays. It is an impressive example of the quality of the research collaboration and the very high motivation of our partner institute INDP on Cape Verde. We are grateful to everyone involved”.
Andreas Villwock | alfa
A promising target in the quest for a 1-million-year-old Antarctic ice core
24.05.2018 | University of Washington
Tropical Peat Swamps: Restoration of Endangered Carbon Reservoirs
24.05.2018 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences