There is high temperature inside our planet and the reason is not known yet. A common belief that the Earth`s interior is heated by radioactive elements is now doubted of. Professor Felix Letnikov from Irkutsk Institute of the Earth`s Crust have proposed an idea that the heat is formed in the outer core because of friction between its layers.
Different geophysical data confirm that there is a heat source inside the Earth. In the mantle there are zones with low viscosity, which correspond to molten substance. However, melting rocks requires a lot of energy - so, the question about a source of the energy arises. According to current information, the core consists of two parts: a liquid outer part and a solid inner part. The outer core begins at the depth of 2900 km and is 2346 km thick; it holds 31% of the Earth`s mass. It is pressed between the inner core and the mantle, and because of the Earth`s axial rotation there is friction and heat formation between these two matters. Still, that is not the main heat source. In the outer core at different depths there are different temperature, pressure, viscosity and density, and this results in stratification. Try to spin a tin with condensed milk stored for some time on a shelf. Inside the milk, layers will rub against each other and the tin`s sides. And the fact that friction causes heat is well-known.
According to Letnikov`s theory, heat explosions happen because sometimes heat does not go away to the mantle. In such situation the core contents is of a big role. It includes iron with some nickel and many gases - hydrogen, sulphur and carbon. When explosion happens, a part of the gases mixture detaches and flows away into the mantle. This process is thought to be the cause of most of the abyssal processes.
Tatiana Pitchugina | alfa
World's first solar fuels reactor for night passes test
21.02.2018 | SolarPACES
Geophysicists and atmospheric scientists partner to track typhoons' seismic footprints
16.02.2018 | Princeton University
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences