Geology. The Aral Sea depression was formed toward the end of the Neogene Period (which lasted from about 23 to 2.6 million years ago). Sometime during that process the hollow was partially filled with water—a portion of which came from the Syr Darya.
Who caused the Aral Sea to start shrinking?
Formerly the fourth largest lake in the world with an area of 68,000 km2 (26,300 sq mi), the Aral Sea began shrinking in the 1960s after the rivers that fed it were diverted by Soviet irrigation projects.
What caused the water to start coming back into the Aral Sea?
Attempts to recover the Aral Sea started in 1996 when a dam was built to retain water from the Sir Daria, the river that flows into the north of the Aral Sea, to regulate the water level in this area of the lake and irrigate the surrounding land. The idea was to sacrifice the South Aral Sea to save the North Aral Sea.
What specifically caused the Aral Sea disaster?
The Aral Sea disaster was caused by human mismanagement of a natural resource. In the beginning, the Soviet Union simply did not care, and the Aral Sea was one of many Soviet projects with the stated goal of taming nature.
Why is Aral Sea not a lake?
Sandwiched between Kazakhstan and Uzbekistan, the Aral Sea is actually a lake, albeit a salty, terminal one. It is salty because evaporation of water from the lake surface is greater than the amount of water being replenishing through rivers flowing in. It is terminal because there is no outflowing river.
What is the primary reason the Aral Sea is mostly gone?
What is the primary reason for the shrinking of the Aral Sea? Large-scale irrigation projects implemented by the Soviets in the 1950s have diverted water from the two rivers that feed the sea.
Why we destroyed the 4th largest lake?
The Aral Sea was, once upon a time, the fourth largest lake on the planet. But, since the 1960s, the lake has been shrinking. Rather, the Soviets began diverting water from the lake to irrigate cotton, a program designed to pump money into the Soviet economy.
What problems were caused by the use of water from the Aral Sea for irrigation?
Among the environmental problems of the entire Aral Sea basin caused by large-scale irrigation, the increasing salinization of irrigated land and water is the biggest one. Currently, over 70% of the irrigated land in Karakalpakstan is affected by salinity, and problems are worsening.
Who destroyed the Aral Sea?
In October 1990 Western scientists confirmed the virtual disappearance of the Aral Sea in Soviet Central Asia, formerly the fourth largest inland sea in the world. The loss of sea water was the result of 60 years of intensive agriculture and pollution by the Soviet authorities.
What has happened to the water that remains in the Aral Sea?
The Aral Sea began to quickly shrink because of the evaporation of its now unreplenished waters. By 1989 the Aral Sea had receded to form two separate parts, the “Greater Sea” in the south and the “Lesser Sea” in the north, each of which had a salinity almost triple that of the sea in the 1950s.
Will Aral Sea come back?
During the past three decades, restoration of the Aral Sea ecosystem has focused mainly on afforestation of the drained seabed to mitigate the sandstorms that cause erosion and further degrade the fragile soils. The Aral Sea assessment and action plan will be completed by late July 2021.
What has been done to remedy the Aral Sea disaster?
In 2005, a dam separated the north and south sections, reducing water loss. The north Aral Sea is back up to 42 metres above sea level, and native fish have returned from refuges in the river, says Nikolay Aladin of the Russian Zoological Institute in Saint Petersburg.
What was the Aral Sea like before 1960?
It was once the fourth largest lake in the world. Fed primarily by snowmelt and precipitation from faraway mountains, the Aral Sea supported extensive fishing communities and a temperate oasis in a mostly arid region of Kazakhstan and Uzbekistan.
What is the meaning of Aral?
Definition for the Tagalog word aral: aral. [noun] lesson; studies.