One aim of this project is to increase understanding of seismic risks throughout the Alpine chain and the surrounding regions. Urban zones in full development, as well as some major European centres (Grenoble, Geneva, Torino,…), are concentrated along the mountain chain. Thanks to this new network of GPS stations, it will be possible to continuously measure slow (3) and low amplitude movements in the earth’s crust with great precision. The information provided by the network, added to geologic data on of the fault zones, will contribute to a better localisation of potential seismic sites, their size and their consequences in terms of expected damages in the Alpine region.
The project, begun three years ago, was implemented by 12 partners, including 2 in France: the Laboratory of Internal Geophysics and Tectonophysics (4) at the University Joseph Fournier in Grenoble and the Strasbourg Institute of Earth Physics (5) (IPGS) at the University Louis Pasteur (ULP) in Strasbourg. The IPGS brought its expertise in characterising active faults for seismic risk and measuring deformations with high precision spatial geodetics (6) (GPS).
Of the 40 stations located in the Alpine region, 5 have been acquired by the IPGS thanks to co-funding from the Région Alsace, the CNRS and the European programme Interreg III B – Alpine region. These 5 stations are installed in Alsace on geological sites that meet the specific criteria necessary for such high precision. They complement the 2 existing stations, STJ9 and WELS (7) of ULP’s Earth science Engineering School and Observatory (EOST).
In Alsace, the new GPS network will also be very useful for all potential users of geodesic data on local communities. Cadastral services (property management), surveyors (urban planning, regional development), network managers (water, gas, and telecommunications), cartographers, civil security services, as well as agriculture (land plotting), navigation, transportation, and meteorological services will all find the information highly useful.
1) GPS (Global positioning system) : Geodesic spatial system, that allows three-dimensional positioning (latitude, longtitude, altitude) as well as measurement of time. It has been operational since 1994 ; with 24 satellites, it guarantees full coverage of the globe 24 hours a day.
2) Submillimetric precision: positioning under one millimetre.
3) Slow movements: “slow“ movement is more difficult to study than the “rapid“ movement typical of tectonic regions such as the San Andreas Fault (California) or the Anatolian Fault in Turkey.
4) Joint research unit CNRS/UJF, UMR 5559.
5) Joint research unit CNRS/ULP, UMR 7516.
6) Geodetics: the science that studies the form and dimensions of the earth.
7) STJ9 and WELS: These two stations are part of the observational network of the EOST. STJ9 benefits from support from the Région Alsace. These stations are part of France’s national GPS network (RENAG) of the National Institute for the Sciences of the Universe (CNRS) and the French GPS permanent network (RGP).Research Contact:
Isabel Pellon Zarragoitia | alfa
Northern oceans pumped CO2 into the atmosphere
27.03.2017 | CAGE - Center for Arctic Gas Hydrate, Climate and Environment
Weather extremes: Humans likely influence giant airstreams
27.03.2017 | Potsdam-Institut für Klimafolgenforschung
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
27.03.2017 | Earth Sciences
27.03.2017 | Life Sciences
27.03.2017 | Life Sciences