Professor Jøran Moen at the Institute of Physics plans to fire a rocket from New Aalesund on the Svalbard archipelago some time between the end of November and beginning of December in order to solve some fundamental physics problems in the atmosphere. One of the problems is why airplanes in the polar region lose radio contact for a relatively long space of time.
Because of the curvature of Earth, the airplanes flying the polar routes have to use high-frequency radio communication. The radio signals are sent via the ionosphere, which lies between 80 and 500 kilometres above the landscape. This consists of a layer of gas with electronic particles that reflect the signals back to Earth. When the northern lights are active, they create so much turbulence in the electronic clouds that the radio signals are cut off. In addition it is not unusual for solar storms to cause inaccuracies of up to100 metres on the GPS.
Professor Moen is planning to use the registrations from the rocket to gain a better understanding of the connection between the northern lights and the disturbances to navigation systems and radio signals.
“This knowledge is essential for developing warning systems that can deal with these problems,” Jøran Moen explains.
First in the world
The rocket is nine metres long and will be fired at a suitable time between 28 November and 7 December. The flying time is calculated to last only ten minutes. The rocket will cut through the northern lights at an altitude of 350 km, and then plunge into the Barents Sea.
The rocket is equipped to measure the electric fields and waves of the northern lights, particles of low and high energy in these lights, and fine structures in the electronic clouds. Until now it has only been possible to examine the dissolution of electronic structures of a few hundred metres of a northern light. The rocket instruments from the University of Oslo can concentrate on structures down to a few metres.
“If we succeed in flying through the northern lights, we will set a world record in measurements of highly dissolved electronic precipitation in these lights.”
The rocket has a predetermined course. Before Professor Moen can push the button, he has to forecast when the northern lights will cover the rocket track. To hit the target he is depending on the assistance of experts on northern lights in New Aalesund and Longyearbyen to interpret the data from the Eiscat radar in Svalbard. He will also be helped by signals from a radar system in the vicinity of Helsinki, Finland. This can record echoes from high-frequency radio signals over Svalbard. The intensity of the echo signals will determine the extent of the northern lights activity.
Jøran Moen will also interpret the data from a NASA satellite that measures solar winds on their way from the Sun to Earth. These data can give the operators an extra hour to consider pending northern lights activity.
“We are planning to fire the rocket when the northern lights are stabilising over the course for the rocket. But the dynamics of the northern lights are so spontaneous that we can’t guarantee one hundred per cent that the rocket will target the northern lights accurately.”
In order to secure an optimal time for launching the rocket, the airspace over the North Atlantic between Iceland, Greenland, Norway and Svalbard will be closed for four hours every day for one and a half weeks.
The rocket is filled with advanced instruments. In its basement at the Institute of Physics, the University of Oslo has developed a new instrument for measuring the fine structures of electronic clouds. The European space organisation ESA is interested in using this instrument in satellites for forecasting space weather.
“The importance of better forecasts of space weather will increase with the escalating offshore activities in the Barents Sea. Offshore is dependent on stable radio and satellite connections and precise navigation,” Professor Moen explains.
Jøran Moen | alfa
Breakthrough with a chain of gold atoms
17.02.2017 | Universität Konstanz
New functional principle to generate the „third harmonic“
16.02.2017 | Laser Zentrum Hannover e.V.
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
20.02.2017 | Materials Sciences
20.02.2017 | Health and Medicine
20.02.2017 | Health and Medicine