A new set of measurements has allowed a Florida State University geochemist to confirm what other scientists have only suspected about what lies deep below the Earths surface.
Professor Munir Humayun has found that there is a higher iron content in the Earths mantle beneath Hawaii compared to other regions of the mantle. Hotspot islands, such as Hawaii, arise from hot plumes of solid rock from deep within the mantle or the core-mantle boundary that ascend at rates of a few centimeters per year.
While seismologists had long thought that the Earths deep mantle - the rocky layer between 1,000 to 3,000 kilometers deep - beneath the Hawaiian islands has a higher concentration of iron, no one had ever precisely measured it until now, according to Humayun. Iron is one of the four main components of the mantle. "This is a major intellectual advance for science," Humayun said. "The fact that scientists can stand on the Earths surface and tell you whats going on 3,000 kilometers below is a real breakthrough."
Heidelberg Researchers Study Unique Underwater Stalactites
24.11.2017 | Universität Heidelberg
Lightning, with a chance of antimatter
24.11.2017 | Kyoto University
High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
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...
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24.11.2017 | Physics and Astronomy
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24.11.2017 | Earth Sciences