Aral Sea Totally Explained

Everything about The Aral Sea totally explained

The Aral Sea (Kazakh: Арал Теңізі, Aral Tengizi,, Russian: Аральскοе мοре, Tajik/Persian: Daryocha-i Khorazm, Lake Khwarazm) is a landlocked endorheic basin in Central Asia; it lies between Kazakhstan (Aktobe and Kyzylorda provinces) in the north and Karakalpakstan, an autonomous region of Uzbekistan, in the south. The name roughly translates as "Sea of Islands", referring to more than 1,500 islands of one hectare or more that dotted its waters.

Background

Once the world's fourth-largest inland sea with an area of 68,000 km², the Aral Sea has been steadily shrinking since the 1960s, after the rivers Amu Darya and Syr Darya that fed it were diverted by Soviet Union irrigation projects. By 2004, the sea had shrunk to 25% of its original surface area, and a nearly fivefold increase in salinity had killed most of its natural flora and fauna. By 2007 it had declined further to 10% of its original size, splitting into three separate lakes, two of which are too salty for fish to live in. The once prosperous fishing industry has been virtually destroyed, and former fishing towns and villages along the sea's original shores have become desolate ship graveyards. With this collapse has come unemployment and economic hardship.
The Aral Sea is also heavily polluted, largely as the result of weapons testing, industrial projects, pesticides and fertilizer runoff. Wind-blown salt from the dried-out seabed damages crops, and polluted drinking water and salt- and dust-laden air cause serious public health problems. The retreat of the sea has reportedly also caused local climate change, with summers becoming hotter and drier, and winters colder and longer.
The plight of the Aral Sea is frequently described as an environmental catastrophe. There is now an ongoing effort in Kazakhstan to save and replenish what remains of the northern part of the Aral Sea (the Small Aral). A dam project completed in 2005 has raised the water level of this lake by two metres. Salinity has dropped, and fish are again found sufficient numbers for some fishing to be viable. The outlook for the far larger southern part of the sea (the Large Aral) remains bleak.

Ecological problems

The major ecological problem is that diversion of the Amu Darya and Syr Darya rivers for irrigation has shrunk the Aral Sea dramatically; the Aral Sea has been drying up for about 50 years. This has brought about a number of ecological and economic problems for the sea and the area. One of the greatest misuses of the Aral is that for the past forty years it has been a dumping ground for raw human sewage discharge, resulting in the extinction or extermination of many native fish.

History

In 1918, the Russian government decided that the two rivers that fed the Aral Sea, the Amu Darya in the south and the Syr Darya in the northeast, would be diverted to irrigate the desert, in order to attempt to grow rice, melons, cereals, and cotton. This was part of the Soviet plan for cotton, or "white gold", to become a major export. This did eventually end up becoming the case, and today Uzbekistan is one of the world's largest exporters of cotton.
   The irrigation canals began to be built on a large scale in the 1940s. Many of the irrigation canals were poorly built, letting water leak out or evaporate; from the Qaraqum Canal, the largest in Central Asia, perhaps 30 to 75% of the water went to waste. Today only 12% of Uzbekistan's irrigation canal length is waterproofed.
   By 1960, somewhere between 20 and 60 cubic kilometers of water were going each year to the land instead of the sea. Thus, most of the sea's water supply had been diverted, and in the 1960s the Aral Sea began to shrink. From 1961 to 1970, the Aral's sea level fell at an average of 20 cm a year; in the 1970s, the average rate nearly tripled to 50–60 cm per year, and by the 1980s it continued to drop, now with a mean of 80–90 cm each year. After seeing this, the rate of water usage for irrigation continued to increase: the amount of water taken from the rivers doubled between 1960 and 2000; cotton production nearly doubled in the same period.
   The Aral Sea fishing industry, which in its heyday had employed some 40,000 workers and reportedly produced one-sixth of the USSR's entire fish catch, pretty much disappeared; so did the muskrat trapping in the deltas of Amu Darya and Syr Darya, which used to yield as much as 500,000 muskrat pelts a year.
   The disappearance of the lake was no surprise to the Soviets; they expected it to happen long before. As early as in 1964, Aleksandr Asarin at the Hydroproject Institute pointed out that the lake was doomed explaining, "It was part of the five-year plans, approved by the council of ministers and the Politburo. Nobody on a lower level would dare to say a word contradicting those plans, even if it was the fate of the Aral Sea." On the other hand, starting in the 1960s, a large scale project was contemplated to redirect part of the flow of the rivers of the Ob basin to Central Asia over a gigantic canal system. Refilling of the Aral Sea was considered as one of the project's main goals. However, due to its staggering costs and the negative public opinion in Russia proper, the federal authorities abandoned the project by 1986.

Current situation

The sea's surface area shrank by approximately 60%, and its volume by 80%. In 1960, the Aral Sea was the world's fourth-largest lake, with an area of approximately 68,000 km² and a volume of 1100 km³; by 1998, it had dropped to 28,687 km², and eighth-largest. The amount of water it has lost is the equivalent of completely draining Lakes Erie and Ontario. Over the same time period its salinity has increased from about 10 g/L to about 45 g/L. As of 2004, the Aral Sea's surface area was only 17,160 km², 25% of its original size, and still contracting. By 2007 the sea's area shrunk to 10% of its original size, and the salinity of the remains of the southern part of the sea (the Large Aral) increased to to levels in excess of 100 g/L. "The dam has caused the small Aral's sea level to rise swiftly to 38 m (125 ft), from a low of less than 30 m (98 ft), with 42 m (138 ft) considered the level of viability." Economically significant stocks of fish have returned, and observers who had written off the North Aral Sea as an environmental catastrophe were surprised by unexpected reports that in 2006 its returning waters were already partly reviving the fishing industry and producing catches for export as far as Ukraine. The restoration reportedly gave rise to long absent rain clouds and possible microclimate changes, bringing tentative hope to an agricultural sector swallowed by a regional dustbowl, and some expansion of the shrunken sea. "The sea, which had receded almost 100 km south of the port-city of Aral, is now a mere 25 km away." There are plans to build a new canal to reconnect Aralsk with the sea. Construction is scheduled to begin in 2009, by which time it's hoped the distance to be covered will be only 6 km. A new dam is to be built based on a World Bank loan to Kazakhstan, with the start of construction also slated for 2009 to further expand the shrunken Northern Aral eventually to the withered former port of Heralsk.
The South Aral Sea, which lies largely in poorer Uzbekistan, was largely abandoned to its fate. Projects in the North Aral at first seemed to bring glimmers of hope to the South as well: "In addition to restoring water levels in the Northern Sea, a sluice in the dike is periodically opened, allowing excess water to flow into the largely dried-up Southern Aral Sea." Discussions had been held on recreating a channel between the somewhat improved North and the desiccated South, along with uncertain wetland restoration plans throughout the region, but political will is lacking. Attempts to mitigate these effects include planting vegetation in the newly exposed seabed. In the Northern Aral, recently higher sea levels have slightly moderated these effects in some areas, and the spring season now sees long-missing rainfall. In January 1994, the countries of Kazakhstan, Uzbekistan, Turkmenistan, Tajikistan and Kyrgyzstan signed a deal to pledge 1% of their budgets to helping the sea recover. By 2006, the World Bank's restoration projects especially in the North Aral were giving rise to some unexpected, tentative relief in what had been an extremely pessimistic picture.

Bioweapons facility on the Vozrozhdeniya Island

In 1948, a top-secret Soviet bioweapons laboratory was established on the island in the center of the Aral Sea which is now disputed territory between Kazakhstan and Uzbekistan. The exact history, functions and current status of this facility have not yet been disclosed. The base was abandoned in 1992 following the disintegration of the Soviet Union. Scientific expeditions proved that this had been a site for production, testing and later dumping of pathogenic weapons. In 2002, through a project organized by the United States and with Uzbekistan assistance, 10 anthrax burial sites were decontaminated. According to the Kazakh Scientific Center for Quarantine and Zoonotic Infections, all burial sites of anthrax were decontaminated.

Development of the Aral Sea

Ergash Shaismatov, the Deputy Prime Minister of Uzbekistan, announced on August 30, 2006, that the Uzbek government and an international consortium consisting of state-run Uzbekneftegaz, LUKoil Overseas, Petronas, Korea National Oil Corporation, and China National Petroleum Corporation signed a production sharing agreement to explore and develop oil and gas fields in the Aral Sea, saying, "The Aral Sea is largely unknown, but it holds a lot of promise in terms of finding oil and gas. There is risk, of course, but we believe in the success of this unique project." The consortium was created in September 2005.

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