Scientists from Oxford University have discovered that the Earth‘s ice ages have left their mark on the form and structure of the oceanic crust. As it turned out, during glaciation when sea levels decreased, the magma, which extends from the mid-ocean ridges, growing on the surface of the ocean, thereby thickening the crust. However, when the sea level rises again due to the warming slows the production of new crust.
Science was already known that volcanism has a huge impact on the climate as a whole. Our finding is that climate cycles also exert its influence on the oceanic volcanism, says study co-author Richard Katz, Richard Katz, a geophysicist at the University of Oxford. Continue reading “Earth climate affects”
The pilots a UFO landing, often repair their machines, making the impression that the technique of saucers are very unreliable. But you can imagine something else: in the near-Earth space is a war between the races, and as a result – downed flying machines, their breakdowns and repairs.
Battle of the Gods
The historical evidence, as well as the myths and legends of many peoples of the world say that the battle between the warring factions aliens were held in ancient times. The most vivid description of them gives us the ancient Indian epic Mahabharata. Continue reading “War UFOs in Earth’s orbit”
Scientists are concerned about the new discovery. It turns out that about five million years ago, a huge East Antarctic ice sheet melted, raising the sea level by 20 meters. What will happen if the current increase in global temperature will lead to the same consequences?
About five million years ago, sheets of ice at the South Pole began to melt because of ancient global warming. This has caused a rise in sea level by 20 meters. Scientists came to the conclusion that most of this increase was caused by the melting of a large ice sheet in East Antarctica.
Continue reading “The oceans of Earth’s history”
Global warming sea level is rising faster than expected. At the University of Colorado geologist Bill Hay (Hay) has a good idea why. The last official report of the IPCC in 2007 projected global sea level rise of 0.2 to 0.5 meters by 2100. But the current growth measurements of sea level to meet or exceed the maximum values of the range and expect further growth of one meter or more by the end of the century.
The past and possible future changes in sea level.
Map Emanuel Soeding, Christian-Albrechts University, with support from the U.S. National Oceanic and Atmospheric Administration (US National Oceanic & Atmospheric Administration)
Continue reading “Earth’s climate is looking for a new equilibrium”
The University of Frankfurt Goethe Scientists studied the African savannah, and came to the conclusion that the savanna may soon turn into a forest. What will happen to its inhabitants? After living in the vast savannahs are a huge variety of animals.
It seems that the emergence of new forests to be a good thing, because the forests are being cut down on the planet and their territories are reduced. But if it will be due to the unique environment and also would threaten the existence of a huge number of animals, it can not be considered as a good thing.
Continue reading “Global change in the Earth’s ecosystem”
It is known that during the period from 50 to 12 thousand years ago, the ice thickness of up to three kilometers covered northeastern North America until the middle of the Great Plains to the west and to the latitude of New York City in the south. In Northern Europe a solid ice cover reached the latitude of London and Berlin. At the same time the sea level was below the present more than 100 meters.
It is believed that such a distribution of ice masses was the result of a general cooling of the Earth. In geology, this period is called the Pleistocene. Then the whole territory of Siberia, down to the coast of the Arctic Ocean and Alaska, was free of ice, and it lived in a variety of different animals – mammoths, reindeer, woolly rhinos, cave bears and many others. So, the climate of Siberia was then quite soft.
Continue reading “Earth’s typical weather during the Pleistocene”
Our earth were a perfect sphere it could not maintain rotation around its axis, it would be like a bullet always ready to change the axis of rotation. Luckily, our Earth is slightly squashed at the poles, and this makes it similar to a gyroscope that rotates around a fixed axis. Any such stability would be very nice and reassuring, but the difference between the diameter of the Earth at the poles and the diameter of the Earth at the equator of 44 km (12,712 km smallest and the largest 12,756 km), a small difference that makes the Earth a gyroscope highly unstable. You see a bike? Consider a stationary bike, put it in its normal position and let go of: no doubt it will fall. Now take into account that same bike with a pedal that person above: the bike is incredibly right, vertical.
Continue reading “Moving the Earth’s axis”