Lake Baikal object. Why is Baikal considered a unique natural phenomenon? Lake Baikal animal world

You can find whole volumes of information about Baikal, both on the Internet and in various magazines and book editions. The lake is not deprived of attention from tourists, researchers and politicians. From year to year, stunning scientific discoveries are associated with Baikal, expeditions are constantly equipped for thorough research. I decided to dedicate this topic to the most interesting facts and events related to Lake Baikal. I will try to save you from boring geographical terms, here will be only the most interesting. Most of the photos in the topic are clickable (open on click)

- one of the oldest lakes on the planet and the deepest lake in the world. Baikal is one of the ten largest lakes in the world. His average depth about 730 meters, maximum - 1637 meters. In 1996, Baikal was included in the list world heritage UNESCO

Scientists disagree about the origin of Lake Baikal, as well as about its age. Scientists traditionally determine the age of the lake at 25-35 million years. This fact also makes Baikal a unique natural object, since most lakes, especially those of glacial origin, live on average 10-15 thousand years, and then they are filled with silt sediments and swamp

There is also a version about the relative youth of Baikal, put forward by Alexander Tatarinov, Doctor of Geological and Mineralogical Sciences in 2009, which received indirect confirmation during the second stage of the Worlds expedition to Baikal. In particular, the activity of mud volcanoes at the bottom of Lake Baikal allows scientists to assume that the modern coastline of the lake is only 8 thousand years old, and the deep-water part is 150 thousand years old.

Baikal contains about 19% of world reserves fresh water. There is more water in Baikal than in all five Great Lakes combined and 25 times more than, for example, in Lake Ladoga

The water in the lake is so transparent that individual stones and various objects can be seen at a depth of 40 m. The purest and most transparent water of Baikal contains so few mineral salts (100 mg / l) that it can be used instead of distilled





2,630 species and varieties of plants and animals live in Baikal, 2/3 of which are endemic, that is, they live only in this reservoir. Such an abundance of living organisms is explained by the high oxygen content in the entire thickness of the Baikal water.


Photo of Baikal from space

The most interesting in Baikal is the viviparous golomyanka fish, whose body contains up to 30% fat. She surprises biologists with daily feeding migrations from the depths to shallow water.

The second, after the golomyanka, the miracle of Baikal, to which it owes its exceptional purity, is the epishura crustacean (numbers about 300 species). The Baikal epishura is a copepod, 1 mm long, a representative of plankton, found throughout the depth (it is not found in bays where the water warms up). Baikal would not be Baikal without this copepod, barely noticeable to the eye, surprisingly efficient and numerous, managing to filter all Baikal water ten times a year, or even more

Here lives typically marine mammal- seal, or Baikal seal

Baikal's water reserves would be enough for 40 years for the inhabitants of the whole Earth, and at the same time 46 x 1015 people could quench their thirst

Baikal ice presents scientists with many mysteries. So, in the 1930s, specialists from the Baikal Limnological Station discovered unusual forms of ice cover, typical only for Lake Baikal. For example, “hills” are cone-shaped ice hills up to 6 meters high, hollow inside. Appearance they resemble ice tents, "open" in the opposite direction from the coast. Hills can be located separately, and sometimes form miniature " mountain ranges»

On satellite images on the ice of Lake Baikal one can clearly see dark rings with a diameter of 5-7 km. The origin of the rings is not known. Scientists believe that the rings on the ice of the lake may have already appeared many times, but it was impossible to see them because of their huge size. Now, with the use of the latest technology, this has become possible, and scientists will begin to study this phenomenon. For the first time, such rings were discovered in 1999, then in 2003, 2005. As you can see, rings do not form every year. The rings are also not located in the same place. Scientists were particularly interested in the reason for the displacement of the rings in 2008 to the southwest, compared with 1999, 2003 and 2005. In April 2009, such rings were found again, and again in a different place than last year. Scientists suggest that the rings are formed due to the release of natural gas from the bottom of Lake Baikal. However, the exact causes and mechanisms of the formation of dark rings on the Baikal ice have not yet been studied, and no one knows their exact nature.

The Baikal region (the so-called Baikal rift zone) belongs to areas with high seismicity: earthquakes regularly occur here, the strength of most of which is one or two points on the MSK-64 intensity scale. However, strong ones also happen, so in 1862, during a ten-point Kudarinsky earthquake in the northern part of the Selenga delta, a land area of ​​​​200 km2 went under water? with 6 uluses, in which 1,300 people lived, and the Proval Bay was formed

A unique deep-sea neutrino telescope NT-200, built in 1993-1998, was created and operates on the lake, with the help of which high-energy neutrinos are detected. On its basis, the NT-200+ neutrino telescope with an increased effective volume is being created, the construction of which is expected to be completed no earlier than 2017.

The first dives of manned submersibles on Baikal were made in 1977, when the bottom of the lake was explored on the deep-sea submersible "Pices" of Canadian production. In Listvenichny Bay, a depth of 1,410 meters was reached. In 1991, the Pisis sank to a depth of 1,637 meters from the eastern side of Olkhon.

In the summer of 2008, the Foundation for Assistance to the Preservation of Lake Baikal carried out a research expedition "Mira" on Baikal. "52 deep-sea manned submersibles" Mir "were carried out to the bottom of Lake Baikal. Scientists delivered water samples, soil and microorganisms raised from the bottom of Lake Baikal

In 1966, production began at the Baikal Pulp and Paper Mill (BPPM), as a result of which the adjacent bottom areas of the lake began to degrade. Dust and gas emissions have a negative impact on the taiga around the BPPM, dry tops and drying of the forest are noted. In September 2008, the plant introduced a closed water circulation system designed to reduce the discharge of wash water. According to the source, the system turned out to be inoperable and less than a month after its launch, the plant had to be stopped.

There are many legends associated with. The most fascinating of them is connected with the Angara River:
In the old days, the mighty Baikal was cheerful and kind. He deeply loved his only daughter Angara. She was not more beautiful on earth. During the day it is light - lighter than the sky, at night it is dark - darker than the clouds. And whoever rode past the Angara, everyone admired her, everyone praised her. Even migratory birds: geese, swans, cranes - descended low, but rarely landed on the water of the Angara. They said: “Is it possible to blacken light?”

Old man Baikal took care of his daughter more than his heart. Once, when Baikal fell asleep, Angara rushed to run to the young Yenisei. Father woke up, angrily splashed waves. A fierce storm arose, mountains sobbed, forests fell, the sky turned black from grief, animals fled in fear all over the earth, fish dived to the very bottom, birds flew away to the sun. Only the wind howled, and the heroic sea raged. Mighty Baikal hit the gray-haired mountain, broke off a rock from it and threw it after the fleeing daughter. The rock fell on the very throat of the beauty. The blue-eyed Angara pleaded, panting and sobbing, and began to ask:

“Father, I am dying of thirst, forgive me and give me at least one drop of water.”

Baikal shouted angrily:

“I can only give my tears!”

For thousands of years, the Angara has been flowing into the Yenisei with water-tear, and the gray-haired lonely Baikal has become gloomy and scary. The rock that Baikal threw after his daughter was called by people the Shaman stone. Rich sacrifices were made to Baikal there. People said: “Baikal will be angry, it will tear off the Shaman stone, the water will gush and flood the whole earth.” Currently, the river is blocked by a dam, so only the top of the shaman stone is visible from the water.

There is a legend among the people about the creation of Baikal "The Lord looked: the unkind land came out ... no matter how she became offended by him! And, so as not to hold a grudge, he took and waved her not some kind of foot mat, but the very measure of his generosity, which he measured how much to be from him. The measure fell and turned into Baikal.

The younger generation had to write comprehensive work What is Lake Baikal famous for? 4th grade high school left in our memory not so much information. This is the most in the world, - people over forty will say. But this is not the only indicator that brings Lake Baikal into the category of champions. Well, let's update our information about this gem of Russia. It is not for nothing that the lake is called the sacred sea! It is rightfully considered a unique creation of Mother Nature, the pride and national treasure of Russia.

How natural object Baikal was included in 1996, at the twentieth session of UNESCO, in the World Heritage List of Humanity (number 754). What is the uniqueness this lake? We will talk about this in our article.

Where is Lake Baikal located and what is famous for (briefly)

This natural unique attraction is located almost in the center of Asia. On the map of our country, the lake is located in Eastern Siberia, in its southernmost part. Administratively, it serves as the border between the Buryat Republic and Irkutsk region Russian Federation. Baikal is so big that it can be seen even from space. It stretches like a blue crescent from the southwest to the northeast. Therefore, the local population often calls Baikal not a lake, but a sea. “Baigal dalai” is how the Buryats respectfully call it. The coordinates near the lake are: 53°13′ north latitude and 107°45′ east longitude.

What is Lake Baikal famous for? Let's look at its different options.

Depth

Let's start with common truths. Baikal is not only the deepest lake on the planet, but also the most impressive continental depression. This title was confirmed by scientific research conducted in 1983. Most deep place in the lake - 1642 meters from the surface of the water mirror - has the coordinates of 53°14′59″ north latitude and 108°05′11″ east longitude. Thus, the lowest point of Baikal lies 1187 meters below sea level. And the lake has a height of 455 meters above the oceans.

The average depth of Baikal is also impressive: seven hundred and forty-four meters. Only two lakes in the world have an indicator of a kilometer between the water surface and the bottom. These are (1025 m) and Tanganyika (1470 m). The deepest - that's what Lake Baikal is famous for.

In English, in Google, a certain East is among the top three record holders. This lake was found in Antarctica. It has a depth of more than 1200 meters, and another four kilometers of ice rises above the water surface. Thus, we can say that the distance between the surface of the earth and the bottom of the East is more than five thousand meters. But this body of water is not a lake in the usual sense of the word. Rather, it is an underground (subglacial) reservoir of water.

Dimensions

The area of ​​this reservoir is 31,722 square kilometers. That is, the size of the lake is quite comparable with such European countries like Switzerland, Belgium or the Kingdom of the Netherlands. The length of Lake Baikal is six hundred and twenty kilometers, and the width varies between 24-79 km. Wherein coastline stretched for two thousand hundred kilometers. And that's not counting the islands!

Dimensions - this is what Lake Baikal is famous for, although this indicator does not make it the largest on the planet. But the reservoir takes an honorable eighth place among the giants. Ahead are the Caspian (which is also a lake, although salty), the Upper in America, Victoria, Huron, Michigan, the Aral Sea and Tanganyika.

honorable age

Baikal - lake tectonic origin. This explains its record depth. But when did the tectonic fault occur? This question is still considered open among scientists. Traditionally, the age of Baikal is determined at 20-25 million years. This number seems fantastic. After all, lakes “live” on average about ten, in extreme cases, fifteen thousand years. Then alluvial deposits, silty sediments accumulate and change everything turns into a swamp, and it, after centuries, into a meadow. But Siberians are famous for their centenarians. And what Lake Baikal is famous for is its venerable age.

It should be said that the Siberian giant is also unique in other respects - hydrological. Baikal feeds about three hundred rivers, and only one flows out of it - the Angara. And one more uniqueness: seismic activity during a tectonic fault. From time to time, earthquakes occur at the bottom of the lake. In fact, the sensors record about two thousand of them annually. But sometimes there are large earthquakes. So, in 1959, from the shock, the bottom of the lake sank fifteen meters.

The Kudara earthquake of 1862 was the most memorable for the local residents, when a huge piece of land (200 sq. km) with six villages, in which one thousand three hundred people lived, went under water. This place in the delta is now called Proval Bay.

Unique fresh water tank

Despite the fact that the pearl of Siberia occupies only the eighth place in the world in terms of size, in terms of the volume of water it reaches the record. What is Lake Baikal famous for in this regard? Most of the water is in the Caspian. But it's salty in there. Thus, Baikal can be called the undisputed leader. It contains 23,615.39 cubic kilometers of water. This is about twenty percent of the total reserve of all lakes on the planet. To demonstrate the significance of this figure, let's imagine that we managed to block all three hundred rivers flowing into Baikal. But even then it would take Angara three hundred and eighty-seven years to drain the lake.

Unique fauna and flora

It is also strange that, despite the enormous depth of Baikal, there is benthic vegetation in the lake. This is due to seismic activity under the tectonic depression. Magma heats the bottom layers and enriches them with oxygen. Such warm water rises, and cold water sinks. Half of the 2600 species of animals and plants inhabiting the water area are endemic. Biologists are most surprised by the only mammal of the lake that lives 4 thousand kilometers from its marine counterparts and has adapted well to fresh water.

It is difficult to say which fish Lake Baikal is most famous for. Maybe it's a golomlyanka. She is viviparous. Her body contains up to 30 percent fat. She also surprises scientists with her daily migrations. come up for food dark depths in shallow water. The Baikal sturgeon, omul, whitefish, and grayling also live in the lake. And the bottom is covered with freshwater sponges.

Purity and transparency of water

With such an area of ​​the water surface and the presence of industrial enterprises nearby, it would be logical to think that Lake Baikal would become polluted. It wasn't there! The water here is not only drinkable, but close to distilled. You can drink it without fear. And it helps the lake to cleanse itself. This endemic one and a half millimeters in size acts as a natural filter: it passes water through itself, assimilating all the dirt. As a result, the pebbles at the bottom are clearly visible. Water transparency up to forty meters is what Lake Baikal is famous for. The photo of this unique reservoir demonstrates the majestic pristine beauty of nature. It depends on us whether we save it for posterity.

Numerous scientific studies have been devoted to the problem of the origin of the word "Baikal", which indicates a lack of clarity in this matter. There are about a dozen possible explanations for the origin of the name. Among them, the most probable is the version of the origin of the name of the lake from the Turkic-speaking Bai-Kul - a rich lake.

Of the other versions, two more can be noted: from the Mongolian Baigal - a rich fire and Baigal Dalai - a large lake. The peoples who lived on the shores of the lake called Baikal in their own way. Evenks, for example, - Lamu, Buryats - Baigal-Nuur, even the Chinese had a name for Baikal - Beihai - the North Sea.

The Evenk name Lamu - the Sea was used for several years by the first Russian explorers in the 17th century, then they switched to the Buryat Baigal, slightly softening the letter "g" by phonetic replacement. Quite often, Baikal is called the sea, simply out of respect, for its violent temper, for the fact that the far opposite shore is often hidden somewhere in the haze... At the same time, the Small Sea and the Big Sea are distinguished. The Small Sea is what is located between the northern coast of Olkhon and the mainland, everything else is the Big Sea.

Baikal water

Baikal water is unique and amazing, like Baikal itself. It is unusually transparent, pure and saturated with oxygen. In not so ancient times, it was considered healing, with its help, diseases were treated. In spring, the transparency of Baikal water, measured using the Secchi disk (a white disk with a diameter of 30 cm), is 40 m (for comparison, in the Sargasso Sea, which is considered the standard of transparency, this value is 65 m). Later, when a massive algae bloom begins, the transparency of the water decreases, but in calm weather, the bottom can be seen from a boat at a fairly decent depth. Such a high transparency is due to the fact that Baikal water, due to the activity of living organisms that live in it, is very weakly mineralized and close to distilled.

The volume of water in Baikal is about 23 thousand cubic kilometers, which is 20% of the world and 90% of Russian fresh water reserves. Every year, the Baikal ecosystem reproduces about 60 cubic kilometers of clear, oxygenated water.

Age of Lake Baikal

The age of the lake is usually given in the literature as 20-25 million years. In fact, the question of the age of Baikal should be considered open, since the use of various methods for determining the age gives values ​​from 20-30 million to several tens of thousands of years. Apparently, the first estimate is closer to the truth - Baikal is really very ancient lake. If we assume that the age of Baikal is indeed several tens of millions of years, then this is the oldest lake on Earth.

It is believed that Baikal arose as a result of the action of tectonic forces. Tectonic processes are still going on, which is manifested in the increased seismicity of the Baikal region.

Climate in the area of ​​Lake Baikal.

The climate in Eastern Siberia is sharply continental, but the huge mass of water contained in Baikal and its mountainous surroundings create an unusual microclimate. Baikal works like a big thermal stabilizer - in winter it is warmer in Baikal, and in summer a little cooler than, for example, in Irkutsk, located at a distance of 70 km from the lake. The temperature difference is usually around 10 degrees. A significant contribution to this effect is made by forests growing on almost the entire coast of Lake Baikal.

The influence of Lake Baikal is not limited to the regulation of the temperature regime. Due to the fact that evaporation cold water from the surface of the lake is very insignificant, clouds cannot form over Baikal. In addition, the air masses that bring clouds from the land heat up when passing the coastal mountains, and the clouds dissipate. As a result most time over Baikal the sky is clear. This is also evidenced by the numbers: the number of hours of sunshine in the region of Olkhon Island is 2277 hours (for comparison - on the Riga seashore 1839, in Abastumani (Caucasus) - 1994). You should not think that the sun always shines over the lake - if you are not lucky, then you can get one or even two weeks of disgusting rainy weather even in the sunny place Baikal - on Olkhon, but this is extremely rare.

The average annual water temperature on the surface of the lake is +4°C. Near the coast in summer the temperature reaches +16-17°C, in shallow bays up to +22-23°C.

Wind and waves on Baikal.

The wind on Baikal blows almost always. More than thirty local names of winds are known. This does not mean at all that there are so many different winds on Baikal, just that many of them have several names. The peculiarity of the Baikal winds is that almost all of them almost always blow along the coast and there are not as many shelters from them as we would like.

Prevailing winds: northwest, often called mountain winds, northeast (barguzin and verkhovik, also known as angara), southwest (kultuk), southeast (shelonnik). Maximum wind speed, registered on Baikal, 40 m/s. Large values ​​are also found in the literature - up to 60 m/s, but there is no reliable evidence for this.

Where there is wind, there, as you know, there are waves. I note right away that the opposite is not true - the wave can be even with complete calm. Waves on Lake Baikal can reach a height of 4 meters. Sometimes values ​​​​of 5 and even 6 meters are given, but this is most likely an estimate “by eye”, which has a large error, as a rule, in the direction of overestimation. The height of 4 meters was obtained using instrumental measurements in the open sea. The excitement is strongest in autumn and spring. In the summer on Lake Baikal, strong excitement is rare, and calm often occurs.

Ichthyofauna of Baikal.

Depending on the habitat conditions, fish can be divided into several groups. Sturgeon, pike, burbot, ide, roach, dace, perch, minnow occupy coastal shallow waters and river deltas in Baikal. Siberian fish mountain rivers: grayling, taimen, lenok inhabit the small tributaries of the lake and its coastal zone. Omul, since ancient times considered a symbol of Baikal, inhabits its open and coastal part, whitefish, another well-known inhabitant of Baikal, inhabits only the coastal part.

The most remarkable group of Baikal fish are gobies, of which there are 25 species. Of these, golomyankas are of the greatest interest. This miracle of Baikal is not found anywhere else in the world. Golomyanka is unusually beautiful, shimmers in the light blue and pink, and if it is left in the sun it will melt, leaving only bones and a greasy stain. She is the main and most numerous inhabitant of Baikal, but rarely gets into the nets of fishermen. Her only enemy is the seal, for which she is the main food.

In order to preserve rare and endangered animals, the strictest and complete ban on hunting, the maximum preservation of the habitat, the creation of special nurseries, national parks, nature reserves and sanctuaries

Baikal is located almost in the center of Asia within 51°29′–55°46′ N. sh. and 103°43′–109°58′ E. e. The length of the lake is 636 km, maximum width 81 km, the length of the coastline is about 2000 km. The area is 31,500 km2. In terms of area, Baikal ranks 7th among the lakes of the world after the Caspian, Victoria, Tanganyika, Huron, Michigan and Upper. Baikal is the deepest lake in the world - 1637 m, its average depth is 730 m.

Schematic map of the Baikal Basin

In addition to these generally accepted parameters of the lake, there are others. So, according to the data of the bathymetric electronic map of the lake. Baikal, compiled by an international team of authors, there are some differences morphometric characteristics lakes. In terms of water mass (23,000 km 3), Baikal ranks first among fresh lakes world, containing 20% ​​of the world and 80% of Russia's water reserves. There is more water than all the American Great Lakes combined.

If we assume that the flow of water into the lake due to tributaries stopped, then a river equal to the water content of the Angara would begin to flow from 383 years, and it would take more than half a year (about 200 days) to fill the bowl of Baikal with all the rivers of the globe. The level of the lake after its regulation by the Irkutsk reservoir is maintained at 456–457 m a.s.l. y. m. 336 rivers flow into Baikal (according to I. D. Chersky) and one Angara flows out. The area of ​​the drainage basin is 588 thousand km 2, with 53% of it falling on the territory of Russia and 47% on Mongolia.

Source: Baikal studies: textbook. allowance / N. S. Berkin, A. A. Makarov, O. T. Rusinek. - Irkutsk: Publishing house Irk. state un-ta, 2009.

Baikal passport

Geological age of Baikal:

Pre-rift (Pre-Baikal) stage (Cretaceous - Late Eocene) - 70–25 Ma

Rift stage - 25 million years before the present.

Baikal coordinates: 51°29’ – 55°46’ N and 103°43’ – 109°56’ E

Lake area - 31,570 km 2

The area of ​​the drainage basin is 588,092 km2,

including:

in Russia - 53.6%

in Mongolia - 46.4%

The length of the lake is 636 km

The greatest width (Ust-Barguzin settlement - Onguren settlement) - 79.5 km

The smallest width (delta of the Selenga River - Buguldeyka) - 25 km

Coastline length - 2100 km

Maximum depth - 1637 m

Average depth - 758 m

Water volume - 23000 km 3

The bottom of the lake relative to sea level - 1183 m

Thickness of bottom sediments (according to geophysical data):

South Baikal - 700 m

river delta Selengi - 8500 m

Northern Baikal - 4500 m

Precipitation accumulation rate - 0.42 mm/100 years

The thickness of the earth's crust:

under the Siberian platform - 36–42 km

under the mountain ranges of the Baikal region - 45–55 km

The smallest thickness to the base of the crust in the center of the Baikal depression is 34 km

Thinning of the earth's crust under the Baikal Rift - 3–7 km

The highest height of the ridges surrounding Lake Baikal (Barguzinsky Range) is 2,840 m

The amplitude of the rift gap (between greatest height ridges and foundation vpa-

depth of Baikal) - 12 977 (the greatest depth of the ocean ( Mariana Trench in the Pacific

ocean) - 11 022 m)

The value of the vertical displacement of the pre-rift strata along the faults along the coasts:

For South Basin– 8–8.5 km, for the Central Basin – 9 km, for the Northern

basin - 5–5.5 km

Amplitudes of horizontal displacements of strata (spreading) surrounding Baikal – up to 100–150 km

The rate (observed) of the tectonic divergence of the shores of Baikal is 0.7–2 cm/year

Transparency (Secchi disk) – up to 40 m

The average water level at the Pacific mark after flow regulation is 456.41 m

The average water level before flow regulation is 455.67 m

Average amplitude of intra-annual water level changes:

after flow regulation - 0.94 m

before flow regulation - 0.82 m

The time of the minimum level in the annual cycle:

after flow regulation – May

before flow regulation - April

Time of maximum level in the annual cycle:

after flow regulation - October

before flow regulation – September

Water surface temperature:

in bays and sors – from 0°С to +23–24°С

Water temperature in the 0–50 m layer (Southern Baikal) – +3.8–6.5°С

Water temperature at a depth of more than 50 m - + 3.5 ° С

The number of epishura in the 0–50 m layer (Southern Baikal) is 310–1000 thousand ind./m2

The average annual epishura biomass in the 0–50 m layer (Southern Baikal) is 5.2–11 g/m2

Average annual air temperature:

South Baikal - -0.7 ° С

Middle Baikal - -1.6°С

Northern Baikal - -3.6°C

Freezing date (in full) - 12/14/1877 - 02/06/1959

Opening date (in full) - 04/17/1923–05/26/1879

Source: Baikal: nature and people: encyclopedic reference book / Baikal Institute of Nature Management SB RAS; [res. ed. corresponding member A. K. Tulokhonov] - Ulan-Ude: ECOS: Publishing House of the Belarusian Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 2009. - 608 p.: col. ill.

Literature

1. Atlas of Baikal // ed. G.I. Galazia. M.: Federal Service for Geodesy and Cartography of Russia (FSG and KR SB RAS), 1993. - 160 p. Atlas of Baikal. - M.: Ed. GUGK, 1995.
2. Vikulov V.E. Regime of special nature management (experience of organization on the territory of the Baikal basin): dis. . doc. geogr. Sciences / V.E. Vikulov. -Ulan-Ude, 1983.
3. Public administration natural resources Baikal region. - M.: Publishing House of NIA Priroda, 1999. - 244 p.
4. Grushko Ya.M. Baikal: a guide / Ya.M. Grushko. Irkutsk, 1967. -252 p.
5. Kozhov M.M. Baikal and its life / M.M. Kozhov. Irkutsk: Vost.-Sib. book. publishing house, 1963.
6. Logachev N.A. Relief and geomorphological zoning.- In the book: Baikal and Transbaikalia / Series: Istria of the development of the relief of Siberia and the Far East.- M .: Nauka, 1974.-
7. Ainbund M.M. Currents and internal water exchange in Lake Baikal. Text. / MM. Einbund. L.: Gidrometeoizdat, 19888. - 247 p.
8. Kozin A.Z. Geological and geographical description of Baikal Electronic resource. / A.Z. Kozin.
9. Votintsev K.K. Hydrochemistry of Lake Baikal. // M.: Ed. Academy of Sciences of the USSR, 1961. - p. 311.
10. Grafov S. V., Kolotilo L. G., Potashko A. E. Pilot of Lake Baikal. Admiralty No. 1007. - St. Petersburg: GUNiO, 1993.
11. Gusev O. K.,

Lake Baikal - what is it like?

In outline, Baikal looks like a narrow crescent, so easy to remember that it can be easily found on the map of Russia even by those who are not particularly strong in geography. Stretching from the southwest to the northeast for as much as 636 kilometers, Baikal seems to squeeze between mountain ranges, and its water surface is at an altitude of more than 450 meters above sea level, which gives every reason to consider it mountain lake. From the west, the Baikal and Primorsky ridges adjoin it, from the east and southeast - the massifs of Ulan-Burgasy, Khamar-Daban and Barguzinsky. And all this natural landscape so harmonious that one without the other is hard to imagine.

More Oleg Kirillovich Gusev (1930-2012), candidate of biological sciences, professional hunter, editor-in-chief of Russia's oldest magazine "Hunting and hunting economy" and author of several books on conservation issues unique nature of this lake, wrote: "Baikal gives us great joy and great pleasure." And he added: “It strikes with its monumental style and the beautiful, eternal and powerful that is inherent in its very nature”, emphasizing that the more you get close to it, the more tempting it becomes, and the more clearly you understand that Baikal is unique and charmingly inimitable. Anyone who visits here at least once can be convinced of the veracity of these words.

lake depth

The depth of the lake is truly impressive - 1637 meters. According to this indicator, Baikal surpasses such largest water bodies as Tanganyika (1470 m), the Caspian Sea (1025 m), San Martin (836 m), Nyasa (706 m), Issyk-Kul (702 m) and the Great Slave Lake (614 m). m). The remaining deepest lakes in the world, twenty-two in total, are less than 600 meters deep. A climatic conditions on Baikal, as they say, to match it unique features: here the sun scorches mercilessly and cold winds blow, then storms rage and the quietest weather sets in, conducive to beach holidays.

Features and mysteries of Baikal

The coastline of the Siberian "crescent" is 2100 km long, it has 27 islands, the largest of which is Olkhon. The lake is located in a kind of basin, which, as mentioned above, is surrounded on all sides by mountain ranges and hills. This gives reason to assume that the coastline of the reservoir is the same throughout. In fact, rocky and steep is only West Coast Baikal. The relief of the eastern one is more gentle: in some places the mountain peaks are at a distance of 10 or more kilometers from the coast.

Lake Baikal water

23,615.39 km³ - such a fantastic figure measures the reserves of Baikal water. According to this indicator, the lake is second only to the Caspian Sea. Considering that in the latter it is salty, it is Baikal that occupies the first line of the world ranking in terms of fresh water reserves, that is, suitable for drinking water. In addition, it is extremely transparent, and all thanks to a very small amount of suspended and dissolved minerals, not to mention organic impurities - they are generally negligible here. At a depth of up to 35-40 meters, you can even distinguish individual stones, especially in spring, when the water turns blue. It also has a huge supply of oxygen. No wonder Baikal - for the totality of such unique properties and qualities - is called national treasure Russia.

The water in Baikal is very clean. Previously, it could be drunk directly from the lake and not even boiled. But now crowds of tourists have rushed to Baikal, who still pollute this area, so now, before drinking Baikal water, you should ask local residents where it can be done.

Baikal ice

The time of freezing on the lake lasts on average from the beginning of January to the beginning of May. During this period, it freezes almost completely. The only exception is a small 15-20-kilometer section located at the source of the Angara. At the end of winter, the ice thickness can reach 1 meter, and even more in the bays - one and a half to two meters. At severe frosts Huge cracks form on the ice, which are called “stand cracks” here. They are so impressive that they can reach from 10 to 30 km in length. The width, however, is small: only 2-3 m. Such “slits” literally tear the ice cover into separate fields. If it were not for cracks, the formation of which is accompanied by a loud, like a cannon shot, sound, then lake fish would die en masse from a lack of oxygen.

Baikal ice has a number of other features that are unique to it, and truly mysterious, which scientists have not been able to explain. Back in the middle of the last century, specialists from the local limnological station discovered the so-called "hills" - hollow ice hills in the shape of a cone, reaching a height of 5-6 meters. Being "open" to the side opposite the shore, they even somewhat resemble tents. Sometimes there are "solitary hills", that is, located separately from each other. In some cases, they are grouped, forming "mountain ranges" in miniature.

Dark rings on the lake

Another mystery is the dark rings, the diameter of which is 5-7 km (moreover, the width of the lake itself is 80 km). They have nothing to do with the "belt of Saturn", although they were also discovered through satellite imagery. Satellite photographs of amazing formations, taken back in 2009 in different parts of Lake Baikal, went around the entire Internet. Scientists puzzled for a long time: what could it be? And they came to the conclusion that the rings arise due to the rise of deep waters and an increase in the temperature of the upper layer in the center of the ring structure. And as a result, a clockwise flow arises, reaching maximum speeds in certain zones. As a result, vertical water exchange increases, provoking the destruction of the ice cover in an accelerated mode.

Bottom of Baikal

It is impossible not to say about the bottom of the amazing reservoir. It also differs from others, and above all in that it has a very pronounced relief - there are even underwater mountain ranges. The three main basins of the lake - northern, southern and middle, separated by the Akademichesky and Selenginsky ridges - are distinguished by a pronounced bed. The first ridge (his maximum height above the bottom is 1848 meters), is especially expressive: it stretches for as much as 100 km from Olkhon Island to the Ushkany Islands.

earthquakes

Another feature of these places is high seismic activity. Fluctuations of the earth's crust here occur regularly, but the strength of most earthquakes does not exceed one or two points. But there have been powerful ones in the past. For example, in 1862, when a ten-point “shake” led to the sinking of an entire piece of land in the northern part of the Selenga delta, one of the many tributaries of Baikal, under water. Its area was 200 km, about 1500 people lived in this territory. Later, a bay formed here, which is called the Failure. Strong earthquakes also occurred in 1903, 1950, 1957 and 1959. The epicenter of the latter, 9-point, was at the bottom of the lake in the area of ​​the rural settlement of Sukhaya. The aftershocks were then also felt in Irkutsk and Ulan-Ude - about 5-6 points. In our time, the region was shaking in 2008 and 2010: the strength of the tremors was 9 and 6.1 points, respectively.

Origin of Lake Baikal

Lake Baikal still hides the secret of its origin. Researchers often argue about its age, coming to the conclusion that it is at least 25-35 million years. The indicator is impressive, especially considering that the life cycle of most lakes, and primarily of glacial origin, does not exceed 10-15 thousand years. After this period, they either become swampy or filled with silty sediments. With Baikal, nothing like this has happened and is not happening. And, according to scientists, is unlikely to happen in the future. The lack of signs of aging is explained by the fact that the lake is ... a nascent ocean. The hypothesis did not arise out of the blue: as it turned out, its banks move away from each other by 2 cm every year.

Flora and fauna

An interesting fact: the purity of Baikal water is, by the way, very cold (temperature surface layers even in the warm season it does not exceed +8-9°C on average) - supported by the microscopic crustacean epishura, one of the most famous local endemics. In the course of its life, this 1.5 mm crustacean consumes organic matter (algae), passing water through its small body. The role of epishura in the ecosystem of the lake can hardly be overestimated: it forms 90 or more percent of its biomass, serving in turn as food for the Baikal omul and predatory invertebrates. In the processes of self-purification of Lake Baikal, oligochaetes or oligochaetes also play a significant role, 84.5 percent of which are endemic.

Of 2600 species and subspecies local fauna More than half of aquatic animals are endemic, that is, living exclusively in this lake. Among the fish, one can also distinguish grayling, Baikal sturgeon, whitefish, taimen, pike, burbot and others. Of particular interest is the golomyanka, which, from a human point of view, “suffers” from obesity: its body contains about 30% fat. She loves to eat so much that in search of food every day she makes a “journey” from the depths to shallow water, which surprises researchers a lot. This underwater inhabitant is also unique in that it belongs to viviparous fish. The distant "neighbors" of golomyankas can be called freshwater sponges growing at great depths. Their presence here is an exclusive phenomenon: they are not found in any other lake.

If the biosphere of the lake is presented in the form of a pyramid, then it will be crowned by the Baikal seal or seal, which is the only mammal in this reservoir. Almost all the time he lives in the water. The only exception is autumn, when seals lie en masse on rocky shores, forming a kind of "settlement". Many other inhabitants of Baikal also explore the coast and islands, for example, gulls, goldeneyes, shelducks, mergansers, white-tailed eagles and other birds. Characteristic for these places is such a phenomenon as coming to the coast, and in droves, brown bears. And in the mountainous Baikal taiga you can meet musk deer - the smallest deer on Earth.

Attractions of Baikal

Lake Baikal is so majestic that it is often called Siberian Sea. In 1996, it was included in the list of UNESCO World Heritage Sites. But not only due to the unique ecosystem that requires careful treatment - there are also many historical and architectural sights, not to mention natural and cultural monuments.

One of them is located near the lake, at the source of the Angara, a reserved rock called the Shaman-stone. It can be seen in the middle of the river, between capes Rogatka and Ustyansky. If you focus on the line ferry crossing"Port Baikal", then the rock will be 800 meters lower. Since ancient times, the Shaman-stone was endowed by the inhabitants of the Angara region with unusual power, they prayed near it and performed various shamanic rites.

Between the mainland and the Svyatoy Nos peninsula is perhaps the most famous bay on Baikal - Chivyrkuisky. Its area is approximately 300 km², it is the second largest on the lake, and it is also shallow (about 10 m deep). Thanks to the latter circumstance, the water in the bay warms up well, on average up to +24 degrees. On southwest coast there are such settlements as Kurbulik, Katun and Monakhovo. The main wealth of the bay is fish resources. Here you can find pike, perch, horned catfish, the weight of which can reach tens of kilograms. However, fishing on an industrial scale is prohibited - only amateur. The Chivyrkuisky Bay is also known for its thermal spring, one of the hottest: the temperature of the water used to treat diseases of the musculoskeletal system ranges from 38.5-45.5 ° C. The source is located in the Zmeina Bay, on the western side.

On the northeastern coast of Lake Baikal there is a tract belonging to the natural-geographical region of Podlemorye. It is called Frolikha and includes the river of the same name, which flows into Baikal bay Frolikha and flows out of the lake with the same name. In the river valley - its channel, by the way, crosses the famous a tourist route 95 km long - the Frolikhinsky nature reserve is located. Together with the Zabaikalsky National Park and the Barguzinsky Reserve, it is subordinate to the federal budget government agency"Reserved Podlemorie".

Other attractions:

• Northern Baikal is the last site on the great lake, the nature of which, due to its remoteness and lack of highways retains its originality
• Barguzinsky Bay is the largest and deepest in Baikal,
• Ushkany Islands is a small archipelago with rocky shores in the Barguzinsky district of Buryatia,
• Peschanaya Bay, known for its unique beauty,
• Cape Ryty is the northernmost point of the coast, where there are extensive pastures, and one of the most anomalous places,
• Cape Ludar, located near the old village of Zabaikalskoye,
• Chersky Peak - from its slopes the Slyudanka and Bezymyannaya rivers begin, flowing into Baikal,
• The Circum-Baikal Railway, which has historical significance.

Rest on Baikal

It is along the Circum-Baikal railway In the 80s of the XX century, the Bureau of International Youth Tourism "Sputnik" (Irkutsk) developed the first ecological tour. Since that time, ecotourism on Baikal has been actively developing, despite the fact that the tourist infrastructure is not well developed here, there are some transport difficulties. There are also problems associated with environmental pollution by emissions from the Baikal Pulp and Paper Mill. But all of them are to some extent compensated by the activities for the creation and arrangement of excursion trails, regularly held tourism organizations region.

The most favorable time for relaxing on the lake is from May to October. You can swim in July and August, since these months are the hottest - the air warms up to + 30 ° C, shallow water - up to + 25 ° C. Vacation on Lake Baikal will satisfy the needs of even the most demanding tourists. beach holiday, bike and car tours, hiking along the coast, rafting on catamarans and kayaks, quad biking and even helicopter tours - these are far from complete list what travel agencies offer to their customers. Climbing coastal cliffs and descending into caves are popular.

Fishing

Fishing should be mentioned separately. Many amateurs fish from the rocks adjacent to the lake. The most reckless anglers prefer to settle in specialized bases, of which there are many, and which differ in different levels of comfort. They go fishing on rented vessels. The most popular places for fishing on Baikal are the already mentioned Chivyrkuisky Bay, Mukhor Bay, the shallow bays of the Small Sea and, of course, the rivers flowing into it. The largest of them (besides the Selenga) are the Upper Angara, Snezhnaya, Barguzin, Kichera, Turka, Buguldeyka and Goloustnaya. And only one river flows out of the lake - the Angara.

Fishing, only now under the ice, finds its fans in the winter season, which here lasts from late December to mid-May. Fans of the “second Russian hunt” are helped by professional instructors: without them, it is difficult for inexperienced fishermen to make the right hole in the unusually transparent ice. They willingly share the secrets of how to organize comfortable rest in conditions of 40-degree frosts, which are not uncommon for Baikal. And those who do not want to test their health with extreme cold, go underwater fishing in March and April. At this time, the ice is still strong, and the air temperature begins to reach positive levels.

Winter sports

Of winter entertainment, tourists are also offered skiing. dog sledding(routes are very different both in complexity and length), snowmobile rides ( excursion programs are also different and depend on the level of preparedness of the riders), riding skiing, sledges and snowboards (you can rent ski equipment at numerous rental points on the coast). In winter, as, indeed, in summer, helicopter excursions are held in high esteem among vacationers, giving unforgettable impressions for a lifetime.

Children and youth tourism

Sufficiently developed on Baikal and children's tourism involving rest in summer camps. We will immediately please parents: your children will not be bored here. Staying in a children's institution involves a rich excursion and creative program, including the holding of sanatorium and health-improving events at specialized bases. One of the most convenient places on Baikal for recreation with young children is Mandarkhan Bay. It seems as if it was specially created by nature for this purpose: it is very shallow, and in summer there is perhaps the warmest water here and children do not risk catching a cold.

The youth is not left unattended. For her, the interregional public organization "Great Baikal Trail", established in 2003, implements various international programs, taking into account the specifics and needs of the age of up to 30. For example, the arrangement and reconstruction of ecological paths, holding educational lectures on nature conservation. Schoolchildren are also actively involved as listeners of the latter.

Video: The underwater world of Lake Baikal

Hotels and recreation centers on Lake Baikal

Many tourists come to rest on Baikal, as they say, savages, getting on their cars. They choose a place they like on the coast and stop there, spending the night in tents. There are very few campsites specially equipped for motorists on the lake. If you plan to stop at such a site, you should take into account that there may not be firewood and basic amenities (for example, a toilet) in this place. Therefore, think in advance about how you will “survive”.

Such experiences will be spared by those who prefer to travel in comfort, even minimal. At their service are many hotels, recreation centers and guest houses scattered along the entire coast of Lake Baikal. Moreover, each tourist will be able to find the most suitable accommodation option for him - taking into account, of course, individual preferences and financial capabilities. We are forced to upset the bohemian public: there are no five-star hotels with the highest level of service here. She, like "mere mortals", will have to be content with ordinary rooms with all amenities. Another note: some recreation centers accept tourists only in the summer.

Tourists traveling on their own run the risk of running into unscrupulous intermediaries when booking a hotel room or recreation center. To prevent this from happening, book a hotel room only through proven and reliable services, which will not only save you from scammers, but also allow you to rent a room at the lowest cost, without unnecessary markups. We recommend Booking.com, one of the first and most popular online hotel booking systems.

How to get there

There are various ways to get to Baikal. The starting point, as a rule, is the nearby large cities: Irkutsk, Ulan-Ude, Severobaikalsk. Tourists first come to one of these settlements and already there they plan their further route in detail. The trip on the section of the Trans-Siberian Railway between Ulan-Ude and Irkutsk is especially memorable: the lake stretches right outside the train windows and you can admire its magical panorama for hours.

One of the most popular places tourism on the Siberian Sea is the village of Listvyanka, located at the source of the Angara, it is 65 km from Irkutsk. From regional center you can get here by bus or boat, the travel time is a little more than an hour. All routes originate in Irkutsk water transport, plying not only on Baikal, but also on the Angara.