SAN FRANCISCO â€" A half-century record of story has melted pided from a Naimona'nyi glacier in southwestern Tibet, highlighting a changes entrance to glaciers opposite a Himalayas.
constraint a notation story of a atmosphere and meridian from a time when a sleet and ice fell. They record dust, charcoal and even notation amounts of chief fallout from windy chief tests conducted in a 1950s. It can all be seen in ice around a globe, from a Himalayas to a poles to a Alps.
But during Naimona'nyi, that justification has all though disappeared.
"At slightest a tip 50 years of this record has been obliterated," Mary Davis, an ice-core researcher during Ohio State University, reported here during a annual assembly of a American Geophysical Union (AGU). "We presupposition that maybe it is left since of melting."
That melting is attributable to climate change, scientists say. According to Duncan Quincey, a glacier researcher during Aberystwyth University in a United Kingdom, eastern Himalayas glaciers are in an accelerating retreat, while a tiny series of are expanding, driven by opposite continue patterns in those areas.
By drilling tubular cores out of glaciers and ice caps around a world, glaciologists can lane climate history and even pinpoint specific tellurian events such as a 1950s and 1960s chief explosve tests in a South Pacific. []
At Naimona'nyi glacier, that new chronological record has vanished, Davis said. Meanwhile, she said, a glacier is display meaningful signs of melt, including on tip of a glacier and tiny cylindrical melt-holes, called "cryoconites," in a ice.
"The glacier is losing mass from a tip by melting, though it's also retreating," Davis said. "This shelter is accelerating."
Glacial retreat, that occurs as a ice melts along a edges and so "moves" landward, could means among a people who count on these rivers of ice as internal sources of celebration water, Davis said. Retreating glaciers can also leave behind vast freezing lakes, according to Quincey. These lakes are during risk of ripping from their earthen-dam walls, causing harmful peep floods in valleys below.
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News referensi http://news.yahoo.com/history-vanishes-melting-himalayan-glacier-234603299.html
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