In opinion of the British scientists, in visible - on geological measurements - to the prospect our planet is expected by the period of freezing. And a present anthropogenic hotbed effect draws off his offensive only. Anthropogenic factors render on a climate considerable influence and provide a rise in temperature of planet despite a natural tendency to its cooling, writes Deutsche Welle. In fact before humanity began in giant amounts to throw out carbon dioxide
in an atmosphere, our Earth prepared to submerge in a long glacial period. However, he however neotvratim, - Thomas Krouli (Thomas J. Crowley), professor of geology of the Edinburgskogo university, is sure. "This period will come enough soon - but soon on geological
to measurements. That for us left from ten to one hundred thousand years", - the Scottish scientist explains.During greater part of the history our planet did not have an icy cover. That today Antarctic Continent and Greenland is covered by the mnogometrovym layer of ice, is constrained, not
in the last turn, with formation of such large mountain systems as Himalayas, Andes, Rocky mountains and Alps. In the process of their forming the enormous masses of mountain breeds from the bowels of the earth of Earth appeared opened for weathering, and weathering - one of major mechanisms
fastenings of atmospheric carbon dioxide and decline of hotbed effect. Therefore about two with a half million years the period of freezing began back.Without the account of anthropogenic factors a bitter cold must was reign on Earth. Be not to human civilization,
the layer of ice in thick in hundreds of meters would extend from the North pole to Chicago and Vienna, from the South pole - there is Tierra del fuego to the archipelago."Judging on borings stipplers, to containing information about the climate of the last 3-4 millions of years, about 2,5 million years in development of climate
a recurrence appeared first, - professor Krouli talks. - Then during exemplary one and a half million years these changing of rise in temperature and drop in temperature, accompanied by retreat and offensive of icy cover, took place with periodicity in 40 thousand years.
But about million years back cycles suddenly became much prodolzhitel’nee, to 100 thousand years, and vibrations climate - prepotent and sharp. And this amplitude until now continues to grow: not for nothing two su
there are 200 thousand years on the last. Our calculations ground to assert that the period of warm climate on Earth draws to the close". In opinion of professor Krouli and his colleagues, by the active economic activity with its emission of hotbed gases humanity all
only a few draws off and softens the offensive of new period of freezing.
