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Nizhnyaya Tunguska River
The Nizhnyaya Tunguska ( rus, Ни́жняя Тунгу́ска, p=ˈnʲiʐnʲɪjə tʊnˈɡuskə, meaning "Lower Tunguska") is a river in Siberia, Russia, that flows through the Irkutsk Oblast and the Krasnoyarsk Krai. The river is a right tributary of the Yenisey joining it at Turukhansk (see Siberian River Routes). Settlements on the river include Tura, Yukti and Simenga. The ice-free period on the ''Nizhnyaya Tunguska'' starts in mid-June and ends in the first half of October. The river forms the western limit of the Lena Plateau. Hydrography The Nizhnyaya Tunguska is the second largest right tributary of the Yenisey, and joins it near the town of Turukhansk. It is long, and has a drainage basin of . According to the character of the stream, constitution of the river's valley and its shores, it can be divided into two parts: the first one starts at the source of the river and continues down to the village Preobrazhenskoye and the second section of the river lies downstream ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunguska Plateau
The Tunguska Plateau ( rus, Тунгусское плато) is a mountain plateau in Krasnoyarsk Krai, Siberia, Russia. It is a part of the Central Siberian Plateau. The plateau is located in largely uninhabited area, the village of Noginsk was abandoned in 2006. The Tunguska Plateau is named after the historical name of the Evenks. Geography The Tunguska Plateau is located in central Krasnoyarsk Krai. To the north it is limited by the Kureika River and to the south by the Stony Tunguska River.Geographic Encyclopedia - Tunguska Plateau (in Russian) To the north and northeast rise the Putorana Mountains and to the east the border with the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lena Plateau
The Lena Plateau, also known as Prilensky Plateau ( rus, Приленское плато, ''Prilenskoye Plato''; sah, Өлүөнэтээҕи хаптал хайалаах сир), is one of the great plateaus of Siberia. Administratively it is mostly within the Sakha Republic (Yakutia), with a small sector in the Irkutsk Oblast, Far Eastern Federal District, Russia. The plateau is named after the Lena River, which flows across it.Google Earth Protected areas There are spectacularly eroded rock formations composed of gypsum-bearing and saline limestone, dolomite and, in some places sandstone, in different spots of the plateau. The Lena Pillars, lining the banks of river Lena in the region, are the most well-known of these features. They were declared a UNESCO World Heritage Site in 2012. Other protected areas in the plateau are the Sinyyaya Pillars by river Sinyaya, and the Turuuk Khaya Rocks by the Lyutenge River. The Olyokma Nature Reserve is located on the eastern side, part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whirlpool
A whirlpool is a body of rotating water produced by opposing currents or a current running into an obstacle. Small whirlpools form when a bath or a sink is draining. More powerful ones formed in seas or oceans may be called maelstroms ( ). ''Vortex'' is the proper term for a whirlpool that has a downdraft. In narrow ocean straits with fast flowing water, whirlpools are often caused by tides. Many stories tell of ships being sucked into a maelstrom, although only smaller craft are actually in danger. Smaller whirlpools appear at river rapids and can be observed downstream of artificial structures such as weirs and dams. Large cataracts, such as Niagara Falls, produce strong whirlpools. Notable whirlpools Saltstraumen Saltstraumen is a narrow strait located close to the Arctic Circle, south-east of the city of Bodø, Norway. It has one of the strongest tidal currents in the world. Whirlpools up to in diameter and in depth are formed when the current is at its stronges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone Run
A stone run (called also ''stone river'', ''stone stream'' or ''stone sea''Vitosha Nature Park: Basic Information. Landscape. Vitosha Nature Park website.) is a rock landform resulting from the of particular rock varieties caused by freezing-thawing cycles in conditions during the last Ice Age. The actual formation of stone runs involved five processes: |
Landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the shear stren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severnaya (Nizhnyaya Tunguska)
Severny (Russian: ''Северный'', 'northern') (masculine), Severnaya (''Северная'') (feminine), or Severnoye (''Северное'') (neutral) may refer to: People *Andrei Severny (astronomer) (1913–1987), Soviet astronomer *Andrei Severny (filmmaker) (born 1977), Russian filmmaker and photographer *Arkady Severny (1939–1980), performer of Russian criminal songs *Count and Countess Severny, pseudonyms of Tsar Paul I of Russia and Tsaritsa Maria Feodorovna Places * Severny District, several districts and city districts in Russia * Severny Okrug (other), various divisions in Russia * Severny Urban Settlement, several municipal urban settlements in Russia * Severny (inhabited locality) (''Severnaya'', ''Severnoye''), several inhabited localities in Russia * Severny Island, Russia * Severny (volcano), a volcano on the Kamchatka Peninsula, Russia *Severny (air base), Orsk, Russia * Severny Airport, Novosibirsk, Russia *Severny mine, a copper mine in Murmansk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberian Traps
The Siberian Traps (russian: Сибирские траппы, Sibirskiye trappy) is a large region of volcanic rock, known as a large igneous province, in Siberia, Russia. The massive eruptive event that formed the traps is one of the largest known volcanic events in the last years. The eruptions continued for roughly two million years and spanned the Permian–Triassic boundary, or P–T boundary, which occurred around 251.9 million years ago. The Siberian Traps are believed to be the primary cause of the Permian–Triassic extinction event, the most severe extinction event in the geologic record."New Studies of Permian Extinction Shed Light On the Great Dying" |
