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Krusenstern Strait
Krusenstern Strait (russian: Пролив Крузенштерна) is a strait that separates the islands of Raikoke and Shiashkotan in the Kuril Islands, Russia. It is separated into two passages by the Lovushki Rocks and is 61.2 km (about 38 mi) wide. A strong northwest tidal current creates tide rips; eddies and whirlpools may also form at times.National Geospatial-Intelligence Agency. (2014). ''Sailing Directions (Enroute): East Coast of Russia''. U.S. Government, Springfield, Virginia. This strait was named after Russian admiral and explorer Adam Johann von Krusenstern Adam Johann von Krusenstern (also Krusenstjerna in Swedish; russian: Ива́н Фёдорович Крузенште́рн, tr. ; 10 October 177012 August 1846) was a Russian admiral and explorer, who led the first Russian circumnavigatio .... References Straits of the Kuril Islands {{SakhalinOblast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raikoke
Raikoke (russian: Райкоке, ja, 雷公計島), also spelled Raykoke, is, as of 2019 a Russian uninhabited volcanic island near the centre of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean, distant from the island of Matua. Its name is derived from the Ainu language, from “hellmouth”. Geology Raikoke is roughly circular, with a length of with a width of , and an area of . The island is a stratovolcano, its lava composed primarily of basalt. The cone rises above a submarine terrace with a depth of to a maximum height of above sea level. The steep-walled crater is wide and deep with lava flows extending along the eastern half of the island. The volcano has most recently erupted in 1765, 1778, 1924 and 2019. The 1778 and 1924 Raikoke eruptions were classified on the Volcanic Explosivity Index scale (that ranges from zero to eight) as VEI-4 or greater. For comparison the volcano Anak Krakatoa eruption in 2018 was also rated as a VEI-4 ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shiashkotan
Shiashkotan (russian: Шиашкотан); ( ja, 捨子古丹島; Shasukotan-tō) is an uninhabited volcanic island near the center of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean, separated from Ekarma by the Ekarma Strait. Its name is derived from the Ainu language, from “Konbu village”. Geology Shiashkotan is roughly dumbbell-shaped, formed by two volcanic islands joined together by a narrow landspit. The island has a total length of with a width ranging from at its widest point to at its narrowest, and an area of . Both ends of the island are complex stratovolcanos, and landing is possible only on the sandy isthmus. * Pik Sinarka (russian: влк. Синарка; ja, 黒岳; ''Kurodake''), which rises to above sea level occupies the northern end of the island, and is the island’s highest point. Historical eruptions have occurred at Sinarka during 1825–1750, 1846, 1855, and the last and largest from 1872 to 1878. To the east from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuril Islands
The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the Russian Far East. It stretches approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor rocks. The Kuril Islands consist of the Greater Kuril Chain and the Lesser Kuril Chain. They cover an area of around , with a population of roughly 20,000. The islands have been under Russian administration since their 1945 invasion as the Soviet Union towards the end of World War II. Japan claims the four southernmost islands, including two of the three largest ( Iturup and Kunashir), as part of its territory, as well as Shikotan and the Habomai islets, which has led to the ongoing Kuril Islands dispute. The disputed islands are k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tide
Tides are the rise and fall of sea levels caused by the combined effects of the gravity, gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables can be used for any given locale to find the predicted times and amplitude (or "tidal range"). The predictions are influenced by many factors including the alignment of the Sun and Moon, the #Phase and amplitude, phase and amplitude of the tide (pattern of tides in the deep ocean), the amphidromic systems of the oceans, and the shape of the coastline and near-shore bathymetry (see ''#Timing, Timing''). They are however only predictions, the actual time and height of the tide is affected by wind and atmospheric pressure. Many shorelines experience semi-diurnal tides—two nearly equal high and low tides each day. Other locations have a diurnal cycle, diurnal tide—one high and low tide each day. A "mixed tide"—two uneven magnitude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eddy (fluid Dynamics)
In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. The moving fluid creates a space devoid of downstream-flowing fluid on the downstream side of the object. Fluid behind the obstacle flows into the void creating a swirl of fluid on each edge of the obstacle, followed by a short reverse flow of fluid behind the obstacle flowing upstream, toward the back of the obstacle. This phenomenon is naturally observed behind large emergent rocks in swift-flowing rivers. An eddy is a movement of fluid that deviates from the general flow of the fluid. An example for an eddy is a vortex which produces such deviation. However, there are other types of eddies that are not simple vortices. For example, a Rossby wave is an eddy which is an undulation that is a deviation from mean flow, but doesn't have the local closed streamlines of a vortex. Swirl and eddies in engineering The propensity of a fluid to swirl is used ... [...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 strongest. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adam Johann Von Krusenstern
Adam Johann von Krusenstern (also Krusenstjerna in Swedish; russian: Ива́н Фёдорович Крузенште́рн, tr. ; 10 October 177012 August 1846) was a Russian admiral and explorer, who led the first Russian circumnavigation of the globe. Life Krusenstern was born in Haggud, Kreis Harrien, Governorate of Estonia, Russian Empire into a Baltic German family descended from the Swedish aristocratic family von Krusenstjerna, who remained in the province after the country was ceded to Russia. In 1787, he joined the Russian Imperial Navy, and served in the war against Sweden. Subsequently, he served in the Royal Navy between 1793 and 1799, visiting America, India and China. After publishing a paper pointing out the advantages of direct communication by sea between Russia and China by passing Cape Horn at the southern tip of South America and the Cape of Good Hope at the tip of South Africa, he was appointed by Tsar Alexander I to make a voyage to the Far East ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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