Europa inside and out

Although Europa is an icy moon, evidence suggests that its composition is much like the rocky planets – an iron core surrounded by a silicate rock mantle.

The first evidence of a liquid ocean came from the Galileo spacecraft, which revealed that the moon has an induced magnetic field. In order for this to happen, there has to be a conductive layer under the surface and a salt water ocean is the most likely explanation. Although this part has been commonly accepted, there are two different possibilities for the ice layer: the thin ice model and the thick ice model.

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Underground boiler melt the Greenland ice

August 12, 2013. Climate scientists report that an unusually thin crust beneath the surface of Greenland partly explains the abnormally high rate of melting of its ice cap, as the hot magma mass beneath the surface act as one giant "kettle", reports the journal Nature Geoscience.

The temperature at the foot of the glacier, and, accordingly, their condition, at the same time depend on the flow of heat from the Earth's interior and temperature fluctuations on the surface. With this in Greenland there are areas where the foot of the glacier is melting, and which at the same time are

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A new theory of the formation of the ancient continents

A new theory of the formation of the ancient continents Facts

The structure of the Earth can be compared with oranges: its bark like skin, covered with a thick mantle. By its parameters bark 30-40 kilometers deep, and be looser than the thinner oceanic crust.

"According to the new theory, the first continental crust formed when tectonic plates collide, plunging oceanic crust into the Earth's mantle. There is partially melted at the approximate depth of 100 kilometers. This molten rock and formed the first continent, "- said study author Thorsten Nigel, professor at the Institute of Geosciences Steinmann in Bonn.

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China has developed a system for monitoring the Earth's crust

China has developed a system for monitoring the Earth's crust Facts

In March 2012, China had completed a system of monitoring the movement of the earth's crust, which aims — to predict earthquakes. Based on the satellite navigation system is a network of 260 permanent and 2,000 temporary observation stations, including data processing equipment. According to China's earthquake administration, to other purposes for which the monitoring system also provides weather prediction and research.

Experts involved in the project, the consensus is that the results concerning the sources of geoscience, comprehensive, accurate and diverse, and the data will be publicly available

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The water in the ocean on Jupiters moon is the same as on Earth

13.03.2013

Astronomers have found that the water under the ice of Europa spills out onto the surface

On the icy crust that covers the entire surface of Europa — Jupiter — discovered salt. These data were Mike Brown (Mike Brown) at the California Institute of Technology in Pasadena (California Institute of Technology in Pasadena) and Kevin Hand (Kevin Hand) of NASA (NASA's Jet Propulsion Laboratory, Pasadena), working with the powerful Keck II, mounted on Hawaii (Telescope Keck II on Mauna Kea, Hawaii) and spectrometer OSIRIS.

In European salts are magnesium sulfate, sodium chloride and potassium.

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The theory of plate tectonics — in doubt

April 19, 2013. If you look at the geological map of Alaska, you can see the regions where the layers of rock in a strange way "fused" with the platform. South Alaska — a cluster of fragments of all shapes and sizes, each of which is ready to tell his story. All of them — "exotic terranes", formed in different places? At different times. What forces carried them here, and why some of them are deployed relative to its neighbors — is a mystery.

Some exotic terranes — a native of the regions on the other side of the

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Siberian scientists create ultra-precise seismological equipment

The specialists of the Siberian Branch of Russian Academy of Sciences and the Institute of Geology, Geophysics and Mineral Resources (Ministry of Environment) created a vibrator up to 100 tons, which will predict an earthquake with a greater degree of reliability. It all started back in the days of the USSR on the banks of the Ob Sea Iskitimsky district of Novosibirsk region. There was a special range of Geophysical Survey SB RAS. But then work to create a super-powerful vibration sources were conducted, first, to the deep seismic sounding. Previously used for this purpose only explosions. Some "experts" even

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In the Indian Ocean found traces of ancient lost continent

February 25, 2013. Arthur Conan Doyle wrote that one drop of water, a man who knows how to think, may infer the existence of the entire ocean. A team of researchers from the UK, Germany and Norway confirmed this idea with regard to the continent, instead of using the drops — the grains of sand.

The article (PDF), Published in journal Nature Geoscience, scientists have consistently developed the idea that Mascarene Plateau, were once part of the supercontinent Gondwana, and now? huge underwater elevated plain, parts of which rise above the water, forming islands, together with part of Arabian-Indian ocean

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Scientists have analyzed the noise before the eruption of the volcano

July 15, 2013. Redoubt Volcano in Alaska before the eruption has issued an unusually high-pitched sound that arose due to fluctuations in the Earth's crust in a series of small earthquakes preceding the eruption, according to a paper published in the journal Nature Geoscience.

Volcanic eruption is often preceded by the slack of the earthquake. They can go after each other with such a small gap, that the earth's crust, fluctuating, low-frequency issues "trill." Scientists led by a graduate of the Moscow State University of Geodesy and Cartography Ksenia Dmitrieva from Stanford University (USA) analyzed the eruption of Redoubt volcano

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Siberian scientists create ultra-precise seismological equipment

The specialists of the Siberian Branch of Russian Academy of Sciences and the Institute of Geology, Geophysics and Mineral Resources (Ministry of Environment) created a vibrator up to 100 tons, which will predict an earthquake with a greater degree of reliability.It all started back in the days of the USSR on the banks of the Ob Sea Iskitimsky district of Novosibirsk region. There was a special range of Geophysical Survey SB RAS. But then work to create a super-powerful vibration sources were conducted, first, to the deep seismic sounding. Previously used for this purpose only explosions. Some "experts" even proposed

Continue reading Siberian scientists create ultra-precise seismological equipment

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