Since the second half of the 20th century, the Aral Sea, which has existed on the earth for 5.5 million years, has shrunk rapidly due to the unscientific overuse of human beings. With the continuous decline of water level, the Aral Sea was divided into two parts in 1987, and the South Aral Sea was further divided into two parts in 2003.
In 20 14, most of the Aral Sea dried up and disappeared. It is predicted that by 2020, the Aral Sea will completely dry up and disappear.
Located between Kazakhstan and Uzbekistan.
The northern and eastern coasts of the lake are winding, with many small lakes and coastal islands.
The south bank is the A Mu estuary delta, and the west bank is steep. The lake is navigable within seven months. The Aral Sea was formed at the end of Pliocene (7-2.5 million years ago), when the earth's crust sank and surface water accumulated, and it was a relic of transgression. Since the Pleistocene (2.5 million ~ 1 10,000 years ago), the rivers of Syr Darya and Amu Darya have been injected into the Aral Sea, keeping the water level unchanged. Since 1960s, the rivers of Amu Darya River and Syr Darya River have been widely used in agriculture and industry. Since 1970s, the continuous drought has caused the lake water level to drop, the lake area to decrease sharply, and the lake salinity to increase, resulting in a large amount of dry salt accumulation near the lake basin.
Climate Lake basin area belongs to extreme continental climate. Historically, affected by the cyclical dry climate, the water level of the lake has become relatively large. The climate of Aral Sea belongs to desert continental type. Average temperature:1~ February, north-12℃( 10.4℉), south-6℃ (21℉); In July, it was 23.3℃(73.9℉) in the north and 26. 1℃(79℉) in the south. The annual rainfall is 100 mm (4 inches). The water temperature in July is 23 ~ 25℃ (73 ~ 77 ℉); 1 1 to 65438+February, the water temperature was -0.7℃(30.8℉), and the lake was frozen. The evaporation of the lake is almost the same as the inflow, but for a long time, the water level has a gradual downward trend. The salt content of seawater is 8 ~1.5 mg/L. Aralsk in the northeast and Muinnak in the south are important economic centers.
With the shrinking of the Aral Sea, the surrounding climate has changed, with stronger continental characteristics, shorter, hotter and less rainy summers and longer, colder and snowless winters. The growth period is shortened to an average of 170 days per year, and sandstorms last for more than 90 days per year.
The Aral Sea covers an area of over 60,000 square kilometers, with an average water depth of13m and the deepest point of 64m. It is mainly injected by the Syr Darya (now flowing into the North Aral Sea) and the Amu Darya (now flowing into the South Aral Sea, now flowing into the East Aral Sea and the West Aral Sea). Historically, the altitude of Aral Sea was 53.
It is 435 kilometers long from north to south and 290 kilometers long from east to west, covering an area of 68,000 square kilometers, with an average depth of 16 meters and the deepest point outside the west coast of 69 meters.
In the early 1960s, the lake was 53 meters above sea level and covered an area of 64,500 square kilometers, making it the fourth largest lake in the world. Since then, because the rivers of Amu Darya River and Syr Darya River have been widely used in agriculture and industry, and the climate has been continuously dry since 1970s, the water level of the lake has dropped, the area of the lake has been drastically reduced, the salinity of the lake has increased, the fish production has decreased, and many kinds of fish have become extinct, and a large amount of dry salt has accumulated in the vicinity of the lake basin, and plants have been destroyed. The Aral Sea disappeared, forming the South Aral Sea and the North Aral Sea. Later, Easter Island in the lake was connected with the mainland, which split the South Aral Sea in two.
There are many small lakes and coastal islands in the north and east, with A Mu estuary delta on the south bank and steep river banks on the west bank. The lake is navigable within seven months. The Aral Sea was formed at the end of Pliocene (7-2.5 million years ago), when the earth's crust sank and surface water accumulated, and it was a relic of transgression. Since the Pleistocene (2.5 million ~ 1 10,000 years ago), the rivers of Syr Darya and Amu Darya have been injected into the Aral Sea, keeping the water level unchanged. Since 1960s, the rivers of Amu Darya River and Syr Darya River have been widely used in agriculture and industry. Since 1970s, the continuous drought has caused the lake water level to drop, the lake area to decrease sharply, and the lake salinity to increase, resulting in a large amount of dry salt accumulation near the lake basin.
Climate Lake basin area belongs to extreme continental climate. Historically, affected by the cyclical dry climate, the water level of the lake has become relatively large. The climate of Aral Sea belongs to desert continental type. Average temperature:1~ February, north-12℃( 10.4℉), south-6℃ (21℉); In July, it was 23.3℃ (73.9 ℉) in the north and 23.3℃(73.9℉) in the south.
Aral Sea (3 sheets)
It is 26. 1℃(79℉). The annual rainfall is 100 mm (4 inches). The water temperature in July is 23 ~ 25℃ (73 ~ 77 ℉); 1 1 to 65438+February, the water temperature was -0.7℃(30.8℉), and the lake was frozen. The evaporation of the lake is almost the same as the inflow, but for a long time, the water level has a gradual downward trend. The salt content of seawater is 8 ~1.5 mg/L. Aralsk in the northeast and Muinnak in the south are important economic centers.
With the shrinking of the Aral Sea, the surrounding climate has changed, with stronger continental characteristics, shorter, hotter and less rainy summers and longer, colder and snowless winters. The growth period is shortened to an average of 170 days per year, and sandstorms last for more than 90 days per year.
The Aral Sea covers an area of over 60,000 square kilometers, with an average water depth of13m and the deepest point of 64m. It is mainly injected by the Syr Darya (now flowing into the North Aral Sea) and the Amu Darya (now flowing into the South Aral Sea, now flowing into the East Aral Sea and the West Aral Sea). Historically, the Aral Sea is 53 meters above sea level, 435 kilometers from north to south, 290 kilometers from east to west, covering an area of 68,000 square kilometers, with an average depth of 16 meters and the deepest point outside the west coast of 69 meters.
In the early 1960s, the lake was 53 meters above sea level and covered an area of 64,500 square kilometers, making it the fourth largest lake in the world. Since then, because the rivers of Amu Darya River and Syr Darya River have been widely used in agriculture and industry, and the climate has been continuously dry since 1970s, the water level of the lake has dropped, the area of the lake has been drastically reduced, the salinity of the lake has increased, the fish production has decreased, and many kinds of fish have become extinct, and a large amount of dry salt has accumulated in the vicinity of the lake basin, and plants have been destroyed. The Aral Sea disappeared, forming the South Aral Sea and the North Aral Sea. Later, Easter Island in the lake was connected with the mainland, which split the South Aral Sea in two.