Which ocean is the Laptev Sea near

Information about the sea LAptEV. Geographical feature of the sea LAptEV

The seasons of the Northern Ice Ocean belong to the Sea of ​​Laptev. It spreads between the Taimyr peninsula, the islands of the North Earth and the Novosibirsk islands. The water area has an area of ​​about 672 thousand square meters. km. Maximum depth equal to almost 3390 m, and average depth It is 540 m. This sea got its name thanks to Russian explorers and navigators - Dmitry and Khariton Laptev. They carried out the North Sea studies in the 18th century. Yakuta (indigenous people) call this pond "lottvtar".
Sea features

Laptev's map shows that its coastline is severely cut. The sea has large bays: Khatanga, Anabar, Yansky, Olenkky, etc. There are many islands in its extensive water area. They are concentrated, mainly in their western part. The largest groups of islands: Faddey, Wilkitsky and Komsomolskaya Pravda. From the individual islands, a small Taimyr, Sandy, Big Begichev, Starokadovsky et al.
Laptev's rugged seashore forms a multitude of peninsula, lips, capes, bays and bays. Rivers carry their waters at this sea: Yana, Anabar, Khatanga, Hirsch and Lena. They form extensive delta in places of the sign of the sea. Salt from sea water is low.

Climatic conditions

The Laptev Sea is considered the heaviest of the Arctic seas. The climate is close to the Continental, but has bright polar and sea characteristics. The continent is expressed in considerable fluctuations in annual temperature .. The climate in different areas of the sea is inhomogeneous. In autumn over the sea, winds are formed that are easily improved to storms. In winter it is calm and cloudy here. Rare cyclones have happened, causing cold and strong winds.

Lostaptev with the sea

The sea is far from the center of the country, in the harsh climate. Therefore, it is difficult to use economically. For the Russian economy, the Lapthev Sea has very important, since the transport of goods by sea is carried out north in the area. There is a transit of cargo and its delivery to the port of Tiksi. Local residents You are engaged in fishing. The density of indigenous people is very low. Aptks, Yukagira and other nationalities live on the banks. Sea Lotev is a place of various scientific research. Scientists study how the water cycle for ice balance is observed, make hydrometeorological forecasts.

Wilkitsky's Lapto Straits west of the sea. The Shock and Red Armies join the Kara Sea, east of the PM Strait. Lapteva, eterican and Sannikov - with East Siberian Sea. Sea lottow (the earlier names of Siberia, Northern Cheld) LAptEV-Seeplatz About 672 thousand KM 3 -, band 363 thousand KM3, the average depth of 540 m, the highest depth of 2980 m. The greatest length of the sea of ​​LAptEV from the SS is between 71 and 82 ° C 1300 km. Shore length 7523 km, along the mainland 5254 km, along the coast of its islands 2269 km.

The greatest Bavarians. - Khatangsky, Olenkky, Borheha-Lippe, etc. In the sea of ​​LAptEV, many rivers flow, the annual population of about 730 km3 (the Lena River gives 77% of the mainland). Some rivers form extensive deltas. In the Laptev Sea, several dozen islands with a total area of ​​5900 km2. Most of the islands are located in the western part of the Loptnev Sea. The islands vary in origin and landscape.


Melting ice And the voluntary process greatly accelerates the decanation of the shores of the Laptev Sea, sometimes leading to the destruction of small islands. For example, open islands of Semenovsky and Vasilyevsky (74 ° 12 "s. Sh., 133e 20" c.) In exposure to the influence of erosion, the ice layers find numerous remains of animals of the smoother period. Coast in the PM strait. Lapteva means mammoth coast because the quaternary thickness is endowed with the remains of these extinct animals.

As studies have shown in the modern era, the mainland coast of the Loptnev Sea is rising. The relative speed of the isostatic increase increases from the west east of +2.2 mm / year in Bulunculus Bay (Tiksi Bay) to + 6.7 mm / year at Cape Shalaurova.
The geological past of the sea LAptEV is closely related to the history of the development of the northern ocean, which has determined the structure of its beds and the coast. The Archipelago Norderde is a continuation of the Paleozoic and Mesozoic folding of the Taimyrian half-sector, and the Novosibirsk Islands capable of continuing the Mesozoic and Kenozoic folding of the Verkhoyansky range. The main features of the relief of the LAWTEV sea of ​​the sea were determined by the lathesenesic-early playful tectic pauses. In the process of geological evolution, the Laptev Sea has repeatedly been subjected to transgression and regression. The ancient Aresionsform of the lower relief was formed at the end of the Pleocene-beginning of the Pleistocene with a relative decrease in the sea level (400 to 5 m below the modern level). During this period the coast is located at the point of the top edge of the mainland height. At the beginning of the Upper Pleistocene, the sea level was 80-100 m above the modern one. Later he gradually withdrew and reached the situation close to modern, in the time of the sartan-alkaline division, i.e. H. 20 thousand years.

Relief soil and lower precipitation

In its relief, the sea is a lapto-batyal plain that colors and cools in its southern part
Overall wrong about the sea. The depths of less than 100 m occupy about 70%, and more than 1000 m - 18% of the sea area of ​​Laptev.

The relief of the southern (shelf) part of the sea LAptEV is very complex; There are numerous depressive erosion and tectonic origins that continue under waterbeds of modern rivers as well as shallow water and banks. The mainland height is cut by the deep water slide SADKO, which goes into the hollow Nansen in the north.

In the shallow sea regions, the runoff sediments consist of sand and mud, sometimes with the addition of pebbles and boulders. At great depths there is ever. In the coastal zone of the sea of ​​LAptEV, the rivers, especially Lena (11.3 million tons of suspended nansions per year) and Yana (6.2 million tons of suspended nansions per year) have a great influence. The washing of precipitation and erosion of the coasts contribute to the fact that the sedimentation rate in the coastal zone can reach 25 cm / year. Relic ice is often found in the eastern part of the LAptEV Sea under the precipitation layer.

Climate of the sea lostaptev

The Climatic Sea of ​​Laptev is one of the heaviest Arctic seas. The polar night continues for about 3 months in the south and 4 months in the north. Sub-zero air temperatures are saved in the northern part of the Loptnev Sea about 11 months, in the south 9 months. Average air temperature of the coldest month (January) -31, -34 ° C, the average minimum -54 ° C, the absolute minimum -61 ° C.

Average wind speeds In January, from 3-4 m / s in the southern part to 5-6 m / s in the northern part of the sea, the greatest wind speed is 49 m / s.In spring (mainly in April) the duration of sunshine reaches 250 hours per month ( almost twice more than in Moscow). The total radiation on the seashore of LAptEV in April 8-11 kcal / cm2, in May 14-16 kCAL / cm2, but the positive radiation balance will only be in May. The average air temperature in April -19.2 ° C in the south of the sea of ​​LAptEV and -20.8 ° C in the north, in May -7 and -9 ° C.

The steady transition of air temperature through zero to positive values ​​is carried out in the first decade of June. 25% of the annual solar radiation of the water area of ​​the sea Laptev receives in June.

The average air temperature of the warmest month (July) to 1 ° C, in the south and on the coast from 5-7 ° C; The maximum air temperature is 22-24 ° C, minimum -4, -1 with each. The number of days with frost in July in the north 25 in Südtrainer 6. The transition from average daily values ​​to negative values ​​in the north is carried out in the first decade of September in the south - in the second. The average air temperature in September in the north -1.6 ° C in the south of 1.5 ° C and in October or 10.5 and -11.9 ° C.

Hydrological mode

The sea of ​​LAptEV is primarily determined by the fact that most of the year the water area is covered with ice. The ice formation begins in September in the north of the Loptnev Sea, and in October in the south. The sea of ​​LAptEV is characterized by low water temperatures. In winter, the temperature of the coil layer of water is -0.8 ° C in the southeastern part of the Sea of ​​Laptev and in the north of about -1.8 ° C. At depths from 25 to 100 m, water temperature from -1.6 to -1.8 ° C.

A relatively warm Atlantic water with a temperature of up to 1.5 ° C (at a depth of 250-300 m) arrives in the deep sea of ​​the sea of ​​the Laptev Arctic basin. Below the layer of Atlantic waters down to a bottom temperature of -0.8 ° C, the warming begins over the water of Lake Laptev in the mouth areas of the rivers. According to Antonov, the heat flow of the rivers in the LAptEV sea is 3120 10 ^ 12 kcal (62% of thermal drainage in June-July, 25% in August). The heat brought by river waters helps chop the soldering and clean up the ice of the escape areas and support support. Under the influence of solar radiation, the secured vacuum as well as the exchange worms become the centers of the ice center, which melts and heats the water of Laptev.
In summer, in the cleaning areas of the ice areas, the thin layer of surface water in bays, lips and bays is heated to 8-10 ° C. Western water of the sea LAptEV, diluted by the Taimyr, the cold water of the arctic pool, colder water The eastern part where most of the water of the mainland is applied. If in the eastern part of the sea the water temperature can reach 4-6 ° C, then in the western part it does not exceed 2-3 ° C, in the northern part of the sea of ​​the transmission, and near the edge of the water temperature of the water rises to 0-1 ° C.

On the salinity of the water of the Loptnev sea A strong influence has a melting of ice (in the north) and the supply of rivers, which during the year in the entire sea surface of a laptic freshwater layer 135 cm thick (the second in the world in the ocean after the Kara Sea) .

Between the archipelago, the North Earth and the P-Omar Taimyr in the west and the Novosibirsk Islands in the east lies the sea, which is the name of the Russian navigators of the LAptEV brothers. Its western border goes through the eastern shores of the islands of the North Earth from the m. Arctic (over. KOMSOMOLETS), through the Strait of the Red Army on the eastern shore. The October Revolution is present at M. Anunai, through the schocalsky shoving street from M. Sandy. Bolshevik and its eastern bank to m. Vaigach, then on the eastern border of Wilkitsky Street and further on the mainland bank at the tip of the Khatang Gulf. The northern edge of the sea goes from the m. Arctic to the crossing point of the meridian of the northern tip. Kessel (with recognitions) with the edge of the mainland name (79 ° S.sh., 139 ° C d.), Eastern border - from this point in the meridian to about. Boiler room, then on its west bank, through the Sannikov Strait, west bank islands Big and Small Lyakhovsky, and on the western border of the Strait from Dmitry lostaptev to m. Holy Nose. Southern limit The sea passes on the mainland shore from this cape at the tip of the Khatang Gulf.

Sea Lotev refers to the type of mainland season. Its area is 662 thousand kilometers 2, the volume is 353 thousand km 3, the average depth is 533 m, the maximum depth is 3385 m.

There are several dozen islands in the Lapteva Sea, most of which are in the western part of the sea. Most of the large islands - Komsomolskaya Pravda, Wilkitsky and Faddey. Among the individual islands, the islands of Starokadovsky, a small Taimyr, Big Begichev, Sandy, Stallovaya and Belkovsky, stand out with their sizes. There are many small islands in the delta rivers.

The lake lakes of the sea are cut quite heavily, forming various shapes and sizes of the bay, lips, bays, peninsulas and capes. The eastern shores of the islands of the Nordland and the Taimyr P-oov are clearly widespread. To the east of it, the coast forms several large bays (Khatanga, Anabar, Olenki, Yansky), Bay (Kozhevnikov, Normvik, Tiksi), Lips (Bor-Haya, Wankina) and Peninsulas (Hara-Tumus, Nudevik). West coast The Novosibirsk Islands are raised significantly less.

In its coastal nature, the sea is quite diverse. There are also abrasions and accumulations that ice banks encounter. Sometimes a low mountain lends itself to water, most of the Lowlands coast.

climate

The sea is one of the heaviest arctic seas. Its climate, generally marine polar, has signs of continentalism, which is most clearly manifested in relatively large annual air temperature fluctuations.

In the cold season, the sea is mainly in the area of ​​high atmospheric pressure - the Siberian anticyclones. In the fall, unstable winds gradually acquire the southerly direction and intensify to the storm. Cyclones are less likely to cloudily decrease.

In winter, three major bary systems affect the Laptev Sea. Across the southeastern part of the Siberian Anticyclone, the center is located near Yansk Bay. A combination of polar maximum spreads from the north. In the western part of the sea, the influence of the Icelandic minimum is sometimes observed. According to such a bar situation this season, the south and south-west winds are dominated by an average of around 8 m / s. Their speed decreases by the end of winter, often observed. The air is very out. The air temperature over the sea is generally reduced in January from the northwest to the southeast, and in the Tiksi Bay area is -26 - 29 °. Calm and cloudless winter weather is sometimes interrupted by several cyclones. They cause strong cold northerly winds and blizzards that last only a few days.

At the beginning of the warm season, atmospheric pressure areas begin to be destroyed. The baric situation is generally similar to winter, but a bit blurry so that spring coils are very unstable. Alongside the Southers, the northerly winds sometimes blow. Usually the winds are gusty, but Messenger. The air temperature rises steadily. Cloud prevails, pretty cold weather. In summer the Siberian maximum does not exist and the polar maximum is rather bad. A whole sea, the pressure is a little lower, it is a little higher above the sea. As a result, the northern winds most often blow at a speed of 3-4 m / s.High winds (with speeds of more than 20 m / s) in summer are not observed. The average monthly temperature the air in August is the maximum in the central part of the sea, the temperature is 1-5 °. On the coast B. closed bays air sometimes (albeit very rarely) heats up very clearly (up to 32.7 ° in Tiksi). The strengthening of the cyclronic activity is characterized for the summer. At this point, cyclones come across the southern part of the sea, which are also filled here. Then cloudy weather with continuous dry rain is installed over the sea. A Siberian peak pressure begins to form at the end of August, marking the transition to autumn.

So most of the year of the Laptevs clean is under the influence of the Siberian anticyclone. This causes relatively weak cyclone activity and mostly weak winds which are monsimals.

Long and strong cooling with a calm wind vehicle - the main climatic feature of the sea. Another very important factor in the formation of the natural end of Lake Laptnev is the mainland population. There are many small and several large rivers in this sea. The largest of them - Lena - annually brings an average of about 515 km 3 of water, Khatanga - over 100, Yana - more than 30, deer - about 35 and Anabara - about 20 km 3. All other rivers give about 20 km 3 Water per year. The total annual flow in the sea is approximately 720 km 3, which is 30% of the total flow of all Arctic seas. However, the distribution of the flow is extremely uneven in time and space. About 90% of the yearly cycle falls in the summer months (June-September), of which about 35 to 40% of the yearly cycle falls in August, while it barely reaches 5% in January. This type of distribution of the river during the year is explained by the fact that the rivers flowing into the sea of ​​LAptEV are snow efficient, and the overwhelming part of their water enters the southeastern part of the sea (a lena gives 70% of the total Coastal river). Depending on the number of water and hydrometeorological decomposition of rivers river waters. It is applied to the northeast to reach the northern peaks.Boiler room, then far east, leaves the straits to the East Siberian Sea. The large mainland population leads to the elevation of bodies of water on the extensive areas of the sea, especially in the southern and eastern parts.

Water and salt temperature

Surface arctic waters prevail in the Sea of ​​Laptev (like Karavsky). In the zones of strong influence of the coastal river as a result of the mixing of river and surface water bodies, water with relatively high temperatures and low salinity is formed. Large gradients of salinity and density are created at the limit of their section (horizon 5-7 m). To the north, in a deep groove, warm Atlantic waters are usually arctic waters, but their temperature is slightly lower than in the slides of Lake Kara. They invade here 2.5-3 years after starting Spitzbera. In a deeper (compared to Karksky) the sea of ​​Laptev horizons from 800-1000 m down takes a cold bottom arm water with a temperature of -0.4-0.9 ° and almost homogeneous (34.90-4.95) salinity.

Most of the year the temperature of the water is close to the freezing temperature and drops quickly after a summer maximum. In winter, the water temperature varies from -0.8 ° (yum. Bridges) to -1.7 ° (at m. Chelyuskin), which is associated with differences in salinity in these areas.

Ice melting occurs in the first months of spring, so the water temperature remains almost the same as in winter. Only in coastal areas (especially in the deep regions), which are cleared by ice before others, is the water temperature slightly higher than in the central regions. It generally falls from south to north and east to west. The surface of the sea can be felt in summer. In August in the south (Bore-Haya-Lippe) the water temperature on the surface can reach 10 and even 14 ° in the central areas, in the central areas it is 3 - 5 °, around the northern tip. Boiler room 0.8 ° and y. Chelyuskin 1 °. In general, the western part of the sea, where the cold water of the Arctic basin comes, characterized by a lower (2 - 3 °) water temperature than the eastern part, where the main body of warm river water is concentrated, and the surface temperature here can be 6 to reach 8 °.

The temperature of water with depth drops rapidly. In winter in areas with depths of up to 50 - 60 m, the water temperature from the surface down is the same. In the coastal zone it corresponds to -1-1.2 ° and in the open sea it corresponds to about -1.6 °. In the northern regions on the horizons 50-60 m, the water temperature increases by 0.1-0.2 ° due to the influx of other bodies of water.

In the north, in the area of ​​the deep channel, the negative temperature from the surface is noticed up to 100 m. Below that it begins to rise (up to 0.6-0.8 °) to about 300 m and then slowly decrease to the ground. High temperature values ​​(above zero) in a layer of 100-300 m are associated with penetration into the sea of ​​the Lapian warm Atlantic waters from the central Arctic basin.

In summer, the upper layer with a thickness of 10-15 m is well heated and has a temperature of 8-10 ° in the south-eastern part and 3-4 ° in the central regions. Lower than these horizons, the temperature drops sharply and reaches -1.4-1.5 ° on the horizon of 25 m. These or the values ​​close to them are stored down to the ground. In the western part of the sea, where there is less heating, there are no such temperature differences.

The salinity in the Sea of ​​Laptev is very heterogeneous: in summer it changes from 1 to almost 31 in summer, but in the surface layer desalinated waters are dominated by salinity from 20 to 30 ‰ and the distribution of it is very difficult. In general, it rises from the southeast to the northwest and north.

In winter it increases with minimal river stock and intensive glandular calcidity. At the same time (as in summer) in the west it is higher (at m. Chelyuskin - 34 ‰ than in the east (from about. Boiler room - 25 ‰). This high salinity lasts quite a long time, only in June with the onset of the melt ice it starts to fall ..

In summer, the south-eastern part of the sea is the strongest. In the lip of the Bore-Hey salinity falls to 5 and below to the west from the Lyakhov Islands (10-15 ‰). In the west of the sea, more salt water is used (30 - 32 ‰). They are several north of the line. Peter - m. Recognitions. Thus, the desalinated waters face the north in the eastern part of the sea, and the salt waters descend to the south in the western part of the sea.

The depth of salt increases, but seasonal variations are found in the distribution. In winter, it increases from the surface to the horizon from 10 to 15 m and below until the soil remains almost unchanged. At great depths, the salinity does not rise susceptibly not from the surface itself, but from the underlying horizons. The vertical saline solution of the spring begins with the time of intense melting of snow and ice. At this point, the salinity quickly falls into the surface layer, saving winter values ​​on the lower horizons.

In summer, the upper layer (5 - 10 m) in the zone of expansion of river water is very despicable, there is a very sharp increase in salinity below. In a layer of 10 to 25 m, the salt content splitter reaches 20 ‰ 1 m. In the northern part of the sea, the salt content increases relatively quickly from the surface to 50 m, from here and up to 300 m it rises more slowly (ranging from 29 to 33 - 34) it hardly changes any deeper.

In autumn in the southern regions, the summer jump in salinity gradually becomes blurred.

In the Laptev Sea, the density distribution is related to salinity than to temperature. This is explained by the wide range of salinity and the weak effect on density of the low water temperature.

The density increases from the southeast to the northwest. In winter and autumn water, it is more visible water than summer and spring. In winter and at the beginning of the spring, the density is almost the same from the surface to the bottom. In summer, large gradients with salinity and temperature on the horizons 10-15 m are determined by a sharp difference in density. In autumn, their density increases due to the cooling and coal of surface water.

The density stratification of water since the end of autumn can clearly be traced back to the end of spring. It is most clearly expressed in the south-eastern and central areas of the sea and at the edge of the ice.

Port in the Arctic

Relief DNA.

The bottom of the LAptEV Sea is an almost dismantled plain that is hollowed out to the north. There are several gutters, low mounds and cans. A wide but short slide is against the Lena delta, the fun-like slide is near the Olenek Bay, a narrow and long slide. North pillar. Semenovskaya and Vasilyevskaya banks are rising in the Eastern Sea. Half of the total sea area, deep up to 50 m and south of 76 ° C. They do not exceed 25 m. The northern part of the sea is much deeper. At a depth of 100 m, the bottom decreases sharply. The appearance of the sea is formed in the main water of the southern part with depths of 25-100 m.

Laptop laptop and surface relief

Flow

Wind mixing on free Sea Space ice areas performed poorly due to relatively weak winds in the warm season and the greatest ice strength in the sea. During spring and summer, the wind mixes only the upper layers with a thickness of up to 5-7 m in the east and up to 10 m in the western part of the sea.

Strong autumn-winter heating and intensive glands cause the active development of convective mixing. Due to the relatively large degree of homogeneity of waters and early glands, the mixing density is deepest (to the horizon 90-100 m) in the north of the sea. In the central part, convection reaches the bottom (40-50 m) by the beginning of winter, and in the southern part due to large vertical salt levels even at small (up to 25 m) depths apply only from the end of winter.

In general, the sea is characteristic of the usual cyclonic circulation. The coastal current, moving along the coast of the mainland from west to east, deviates from the eastern shore to the north and northwest, and in the form of a Novosibirsk course, the sea goes out over the sea connected to the transaction flow of the central Arctic Pool. From him the northern tip of the northern land to the south of the eastern Haimyr is currently born, moving to the south along the eastern banks of the North Earth and P-Ova Taimyr, closing the cyclone ring. A small part of the coastal current water leads through the strait of Dmitry Laptev and Sannikov to the East Siberian Sea.

The flow velocity in this cycle is small (2 cm / s). Depending on the high bar situation, the cyclonic circulation center can be shifted from the middle of the northern part of the sea towards the northern land. Accordingly, branches appear from the main streams. Tidal are superimposed for permanent rivers.

In the sea of ​​LAptEV, tides are well expressed, which everywhere have a false half-value character. The tidal wave enters from the north of the central arctic basin, plumbing and deforming as it has advanced to the south. The size of the tide is usually small, most often about 0.5 m. Only in Khatangovsky Bay the level of tidal oscillations does the level exceed 2 m in Sisigia. This is explained by the well-known effect of "funnels", which was observed, for example, in Fandy Bay. The tidal wave that came into Khatanga Bay ("funnel") grows in magnitude and extends for nearly 500 km on the p. Hatang. This is one of the cases of deep tidal wave penetration the river. However, the phenomena of Bora on Hatang are not marked. In other rivers that flow into the Laptev Sea, the tide almost does not occur. It fades very close to the mouths as a tidal wave is cleared in the delta.

In addition to the sea LAptEV sea, seasonal and short-term levels are observed. The changes in the seasonal level are generally insignificant. Most of all, they are in the south-eastern part of the sea, in areas near the mouths of the rivers, where the momentum is reached up to 40 cm. The minimum level is observed in winter, the maximum - in summer.

Everywhere and every season are noted everywhere and every season, but they are most important in the southeastern part. Signs and arrows determine the greatest dart and raise the level in the Sea of ​​Laptev. The scope of vibrations of the Devil and Nephane reaches 1-2 m and sometimes reaches 2.5 m (Tiksi Bay). Most often signs and arrivals are observed in the case of strong and stable winds. In general, the northerly winds create a hill and the south sgon, but depending on the coastal configuration, the ramp swings create winds of specific directions in any given area. So in the southeastern seven seas of the sea, the most efficient northwest winds count west and northwest.

In the middle of the LAptEV sea the excitement is from 2-4 points with wave heights around 1 m. In summer (July - August) In the western and central parts of the sea the storms develop 5-7 points during which the wave height 4- 5 m reached. Autumn - most of the storm time of the year when the highest waves are observed (up to 6 m). However, this season waves around 4m are dominated by a height of around 4m, which is determined by overclocking length and depths.

Arkit

Most of the year (from October to May) the Laptev Sea is covered with ice. The ice formation begins at the end of September and runs simultaneously across the entire SEA area. In winter, in its flat eastern part, extensive digestions, up to 2 m thick, are developed. The distribution limit is the depth of about 25 m, which is in the sea a few hundred kilometers from the coast. The spatial area is about 30% of the area of ​​the entire sea. In the western and northwestern parts of the sea, the digest is small, and does not exist at all in winter. The north of the gap zone is drifting ice.

With an almost constant removal of ice from the sea to the north in winter, significant spaces are retained and young ice in almost all winters. The width of this zone varies from tens to several hundred kilometers. The individual locations are called East-Nosmel, Taimyr, Lena and Novosibirsk Wormills. The last two at the beginning of the warm season reach large sizes (thousands of km 2). The melting of ice begins in June - July, and by August the spaces of the sea are cleared of ice. In summer, the ice edge often changes its position under the influence of wind and rivers. The western part of the sea is generally more encouraging than the eastern part. From the north east shore Taimyr in the sea descends with the oceanic Taimyr ice field, where heavy perennial ice is often found. It is steadily retained on new ice formation, depending on the prevailing winds moving north, then south. The local Yansk ice array, which was formed by the star shit, the second half of August usually melts "on the spot" or partially in the north outside the sea.

Economical meaning

Because of harsh natural conditions, the biological productivity of the Laptev Sea is low, and life in its waters in general is quantitative and efficient in general poor. 37 species of fish live here. In very small quantities they catch a Rippushka, a partial MOXUN.

LAptEV lake will not suit the people who prefer to spend their time under the beach and get a tan. Sea Lotew is only for those who love extreme and are ready to stay for the long term. The sea is located in the Northern Iron and washes northern part of Russia. It was named in honor of the two brothers who gathered with the strength and courage to go to these margins and conduct their research. Of course, you can hardly find anything interesting for tourists here. But if you are naturalistic then wildlife abundant in the sea can pretty surprise you. First, there is a large number of different fish, thanks to the one in which Russia's fisheries apply. Second, you will find water birds here, e.g. E.g .: walrus, seals and sea hare. Well, thirdly, polar bears are even found here. Where is ?

Wildlife that live in the sea

Among other inhabitants and the inhabitants of the sea can be highlighted by walrus. They are used to the cold embezzlement, so it is not strange that it is in the sea of ​​Laptev, which lives a large number. Usually they justify the glaciers that fill the sea for most of the year. For other animals you can assign: a marine hare and your seal. Here are haunted

Location of the reservoir

If you look for dictionaries and reference books, you can find out that the sea is mentioned as part of the ocean, separated by the land or the peculiar functions of relief. According to the definition, it can be said that the Laptev Sea is part of the Arctic Ocean. Almost all experts note that this is one of the hard arctic seas. When the Barente and Kara Seas are under the influence of the warm ocean current of the Gulf Stream, it does not reach these places. The long and harsh winter contributes to the formation of large amounts of sea ice.

Properties of the climate.

The LAptEV Sea is equidistant from the Atlantic and Pacific Seas. Warm air masses in arctic latitudes have practically not been removed. Even in the southern part of the water area, negative temperatures are saved for 9 months a year. In the north this time is even longer - almost 11 months. The average temperature in January is between 25 and 35 degrees below zero. The absolute minimum temperature recorded here is 61 0 C. At the same time, it is mainly clear, cloudless weather that has been preserved. This fact is explained by the fact that the Siberian anticyclone dominates in these latitudes.

coast

LAPTEV rivers that flow into the sea: Anabar, Khatanga, Olenek, Lena, Yana - carry a large amount of snack in its waters, pebbles, sand and boulders. Plus, river water drains the sea water significantly in places of imposition. At the mouth of the Lena, the salinity of water is only 1%. While the average is equal to 34%. At great depths of the sea, the sea is covered with mud. This is explained by the fact that rivers regularly carry significant amounts of soil in the sea. River rainfall is up to 25 inches per year. For this reason, coastal areas are characterized by relatively small depths: 20 - 50 meters.

Ice setting.

Unlike other reservoirs, most of the year the Laptev Sea is covered with ice. The ice formation begins almost entirely in September. In winter there is a thickness of up to two meters in the eastern part. Ice begins in June-July. In August, a significant part of the water area is cleared of ice. In warm, if you can use it, the period of the ice duration changes under the influence of wind and rivers. Taimyr ice array rises into the sea.It carries a large volume of many years of ice that has no time to melt for a brief polar summer.

Vegetation and wildlife

It is easy to guess that the temperature of the sea determines the qualitative composition of plants and animals that live in its waters. Phytoplankton is represented in a limited amount of algae and plants that are common in desalinated waters. Zoological plankton is represented by certain types of infusions, trasrats, and other organisms that live for the arctic species of fish species. Among them, Sig, Omul, Halto, Nelma and Oststr. Froghogs, seals, and white bears are inhabited by mammals here. Not far from the coastal nest seagulls.