Lake Baikal

Lake Baikal (русский. о́зеро Байка́л Ozero Baykal, Шаблон:IPA-ru; монгол. Байгал нуур; 中文. 贝加尔湖; буряад. Байгал нуур Baygal nuur, meaning "nature lake") is the world's oldest and deepest lake at 25 million years old and with an average depth of 1700 meters; it is the second most voluminous lake, after the Caspian Sea. Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's surface fresh water that is unfrozen.

At Шаблон:Convert, Lake Baikal is the deepest lake in the world, and the largest freshwater lake in the world by volume. However, Lake Baikal contains less than one third the amount of water as the Caspian Sea, which is the largest lake in the world. Like Lake Tanganyika, Lake Baikal was formed in an ancient rift valley and therefore, is long and crescent-shaped with a surface area (Шаблон:Convert), less than that of Lake Superior or Lake Victoria. Baikal is home to more than 1,700 species of plants and animals, two thirds of which can be found nowhere else in the world and was declared a UNESCO World Heritage Site in 1996. At more than 25 million years old, it is the oldest lake in the world.

A Russian mini-submarine attempting to set a record for the deepest freshwater dive on July 29, 2008, was originally reported as being successful, but a correction later emerged that reported the MIR I failed to do so, reaching a depth of only Шаблон:Convert.

Geography and hydrography

.]] basin, Lake Baikal and the settlements of Dikson, Dudinka, Turukhansk, Krasnoyarsk and Irkutsk.]]

Lake Baikal was known as the "North Sea" in historical Chinese texts. It was situated in the then Xiongnu territory and very little was known about the lake, until the Trans-Siberian railway was built between 1896 and 1902. The scenic railway loop encircling Lake Baikal required 200 bridges and 33 tunnels. As it was being built, a large hydrogeographical expedition headed by F.K. Drizhenko produced the first detailed atlas of the contours of Baikal's depths. The atlas demonstrated that Lake Baikal has more water than all of North America's Great Lakes combined — Шаблон:Convert, about 20% of the total unfrozen fresh surface water on the earth. However, in surface area, it is exceeded by the much shallower Great Lakes, Superior, Huron and Michigan, in North America, as well as by the relatively shallow Lake Victoria in East Africa. Known as the "Galápagos of Russia", its age and isolation have produced some of the world's richest and most unusual freshwater fauna, which is of exceptional value to evolutionary science.

Lake Baikal is in a rift valley, created by the Baikal Rift Zone, where the crust of the earth is pulling apart. At Шаблон:Convert long and Шаблон:Convert wide, Lake Baikal has the largest surface area of any freshwater lake in Asia (Шаблон:Convert) and is the deepest lake in the world (Шаблон:Convert). The bottom of the lake is Шаблон:Convert below sea level, but below this lies some Шаблон:Convert of sediment, placing the rift floor some 8–9 kilometers (more than 5 miles) below the surface: the deepest continental rift on Earth. In geological terms, the rift is young and active—it widens about two centimeters per year. The fault zone is also seismically active; there are hot springs in the area and notable earthquakes every few years. It drains into the Angara tributary of the Yenisei.

Its age is estimated at 25–30 million years, making it one of the most ancient lakes in geological history. It is unique among large, high-latitude lakes, in that its sediments have not been scoured by overriding continental ice sheets. U.S. and Russian studies of core sediment in the 1990s provide a detailed record of climatic variation over the past 250,000 years. Longer and deeper sediment cores are expected in the near future. Lake Baikal is furthermore the only confined fresh water lake in which direct and indirect evidence of gas hydrates exists.

The lake is completely surrounded by mountains. The Baikal Mountains on the north shore and the taiga are technically protected as a national park. It contains 22 islands; the largest, Olkhon, is Шаблон:Convert long. The lake is fed by as many as three hundred and thirty inflowing rivers. The main ones draining directly into Baikal are the Selenga River, the Barguzin River, the Upper Angara River, the Turka River, the Sarma River and the Snezhnaya River. It is drained through a single outlet, the Angara River.

Despite its great depth, the lake's waters are well-mixed and well-oxygenated throughout the water column, compared to the stratification that occurs in such bodies of water as Lake Tanganyika and the Black Sea.

Olkhon, the largest island in Lake Baikal, is the fourth-largest lake-bound island in the world.

Wildlife

market.]]

The extent of biodiversity present in Lake Baikal is equaled by few other lakes. Lake Baikal hosts 1,085 species of plants and 1,550 species and varieties of animals. More than 80% of the animals are endemic. Epischura baikalensis is endemic to Lake Baikal and the dominating zooplankton species there: 80 to 90 percent of total biomass. The Baikal Seal or nerpa (Phoca sibirica) is found throughout Lake Baikal. It is one of only three entirely freshwater seal species in the world, the other being the two subspecies of freshwater Ringed Seal. Perhaps the most important local species is the omul (Coregonus autumnalis migratorius), a smallish endemic salmonid. It is caught, smoked and then sold widely in markets around the lake.

Of particular note are the two species of golomyanka or Baikal oil fish (Comephorus baicalensis and C. dybowskii). These long-finned, translucent fish normally live in depths of Шаблон:Convert and are the primary prey of the Baikal seal, representing the largest fish biomass in the lake. They are famous for disintegrating into a pool of oil and bones when exposed to sunlight. The Baikal grayling (Thymallus arcticus baicalensis), a fast swimming salmonid, popular among anglers and the Baikal sturgeon (Asipenser baerri baicalensis), are both important endemic species with commercial value.

Bear and deer are common and hunted along Baikal shores.Шаблон:Fact

Research

"Miri Na Baykale" redirects here.

Several organizations are carrying out natural research projects on Lake Baikal. Most of them are governmental or associated with governmental organizations. The Baikalian Research Centre is an independent research organization carrying out environmental educational and research project at Lake Baikal.

In July 2008, Russia sent two small submersibles, Mir-1 and Mir-2, to descend Шаблон:Convert to the bottom of Lake Baikal to conduct geological and biological tests on its unique ecosystem. They did not set a world record for the deepest fresh water dive, currently held by Anatoly Sagalevitch, at Шаблон:Convert (also in Lake Baikal aboard a Pisces submersible in 1990). Russian scientist and federal politician, Artur Chilingarov, also joined the 60 dives.

Baikal Deep Underwater Neutrino Telescope

Since 1993, neutrino research has been conducted at the Baikal Deep Underwater Neutrino Telescope (BDUNT). The first part of NT-200, the detector NT-36 with 36 optical modules (OMs) at 3 short strings, was put into operation and took data up to March 1995. A 72-OMs array, NT-72, run in 1995–96. In 1996, it was replaced by the four-string array NT-96. Summed over 700 days effective life time, 320,000,000 muon events have been collected with NT-36, -72, -96. The first neutrino events have been selected. Since April 6, 1997, NT-144, a six-string array with 144 OMs, took data in Lake Baikal. NT-200 array is completed in April, 1998. The Baikal Neutrino Telescope NT-200 is being deployed in Lake Baikal, Шаблон:Convert from shore at a depth of Шаблон:Convert. It consists of 192 optical modules (OMs).

Tourism

. The ice is thick enough to support pedestrians and snowmobiles.]] on the southwest shore.]]

The lake, called "the Pearl of Siberia", drew investors from the tourist industry as energy revenues sparked an economic boom. Viktor Grigorov's Grand Baikal in Irkutsk is one of the investors, who planned to build three hotels creating 570 jobs. In 2007, the Russian government declared the Baikal region a special economic zone. The popular resort of Listvyanka is home to the seven-story Hotel Mayak. Baikal was also declared a UNESCO World Heritage site in 1996. Rosatom plans to build a laboratory in Baikal, in conjunction with an international uranium plant and to invest $2.5bn in the region and create 2,000 jobs in the city of Angarsk.

Environmental concerns

Baykalsk pulp and paper mill

Baykalsk Pulp and Paper Mill (BPPM) was constructed in 1966, directly on the shore line. The BPPM bleaches its paper with chlorine and discharges the waste into Baikal. After decades of protest, the plant is now closed. In March 2009 the plant owner announced the paper mill would never reopen.[1]

Planned East Siberia-Pacific Ocean oil pipeline

Шаблон:Main

Russian oil pipelines state company Transneft was planning to build a trunk pipeline that would have come within Шаблон:M to ft of the lake shore in a zone of substantial seismic activity. Environmental activists in Russia, Greenpeace, Baikal pipeline opposition and local citizens were strongly opposed to these plans, due to the possibility of an accidental oil spill that might cause significant damage to the environment. According to the Transneft's president, numerous meetings with ordinary citizens were held in towns along the route, especially in Irkutsk. However, it was not until Russian president Vladimir Putin ordered the company to consider an alternative route Шаблон:Km to mi to the north to avoid such ecological risks that Transneft agreed to alter its plans. Transneft has since decided to move the pipeline away from Lake Baikal, so that it will not pass through any federal or republic natural reserves. Work began on the pipeline, two days after President Putin agreed to changing the route away from Lake Baikal.

Proposed nuclear plant

In 2006, the Russian Government announced plans to build the world's first International Uranium Enrichment Centre at an existing nuclear facility in Angarsk, Шаблон:Convert from the lake's shores. However, critics argue it would be a disaster for the region and are urging the Government to reconsider.

After enrichment, only 10 percent of the uranium-dervied radioactive material would be exported to international customers, leaving 90 percent in the Lake Baikal region for storage. Uranium tailings contains radioactive and toxic materials, which if improperly stored are potentially dangerous to humans and can contaminate rivers and lakes.

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Dilek I
1 August 2014
Lake Baikal is the oldest freshwater lake in the world. In the winter, the lake freezes, but the water is so clear that you can see 130 feet below the ice.
Brid
1 October 2013
Amazing place. The deepest and largest freshwater lake in the world.
Ольга Михайлик
25 место на рынке - за рыбкой ходите туда. Не пожалеете. А потом на берег кушать )) кабинка с лавками и столиками стоит 100 рублей. Покататься на катере на возд.подушке 500 с чела 15 минут. Рекомендую
Natalia
17 July 2015
Чистый воздух, мягкая вода, красивая природа, много исторических памятников и удивительных мест, вкусный омуль - лучшая в мире рыба!)
Anton Shavshukov
7 August 2014
На резиновой лодке не отплывайте далеко от берега, волна быстро поднимается! Лучшее время морских путешествий - после 6 вечера!
Dmitry Dawson
19 September 2014
Возьмите паром до порта Байкал и прогуляйтесь вдоль ж/д путей. Или лучше на поезде! Тоннели - прямо через скалы!
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Baikal TRF, irishmet and 35,104 more people have been here

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