A long time ago, people inhabiting settlements at the boarder of Dykoye Pole (Wild Field) used to bury empty jugs into the ground: if they started buzzing this meant that a cavalry detachment was galloping across the steppe and it was time to escape to the outpost from the foray. Specialists of the Institute of Physics of the Earth, Russian Academy of Sciences, suggest a similar way for tracking oncoming natural disasters like earthquakes or catastrophic landslides.
“The main task of the forecast is to get a reliable warning about the time and place of a destructive event. The task can be simplified if the long-term observation location is chosen in advance – in that case the major effort can be focused on determination of time of disaster in that particular region. To this end, it is necessary to deploy the observation network within the bounds of a big town or in the vicinity of particularly important objects,” says Alexy Nikolayev, Corresponding Member of the Russian Academy of Sciences. One of the observation methods applied may be the measurement of noise which occurs in the the interior of the Earth.
The history of the method dates back to slightly more than a century. In any case, at the end of the 19th century, De Rossi from Rome installed a microphone at the depth of 20 meters and discovered a multitude of various sounds. Sometimes they became unbearably loud, especially once, half an hour prior to an earthquake. Back in the 50s of the last century, Professor Rikitake from the Tokyo Earthquake Research Institute came to the conclusion that investigation of vibrations in the audio-frequency range might be useful for disaster forecasting. In Russia, research of the “Earth’s voice” started twenty years ago. In 1999-2000, researchers placed sensors in Obninsk, Kislovodsk and Petropavlovsk-Kamchatski, the sensors being installed in deep boreholes (about one hundred meters deep), and since that time they have been accumulating statistics in order to later correlate parameters of sounds heard with certain events. Sometimes they manage to do that. Thus, the sensors in Kislovodsk proved that the noise produced by the interior of the Earth was evidently louder during massive bombing of Iraq in March 2003 than that after downfall of Bagdad and the campaign termination.
Sergey Komarov | alfa
Water cooling for the Earth's crust
22.11.2017 | Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Retreating permafrost coasts threaten the fragile Arctic environment
22.11.2017 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
22.11.2017 | Business and Finance
22.11.2017 | Physics and Astronomy
22.11.2017 | Physics and Astronomy