Alexander Kruber
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Alexander Kruber
Alexander Alexandrovich Kruber (russian: Александр Александрович Крубер; – December 15, 1941) was a Soviet geographer, professor, the founder of the Russian and Soviet karstology. Alexander Kruber was born in Istra (formerly Voskresensk), Russia. He graduated from the Moscow University in 1897. He became chairman of the Geography Department of the Moscow University in 1919 and director of the Scientific Research Institute of Geography during 1923-1927. Since 1927 he could no longer work due to grave health problems. He studied karst structures of the East European Plain, Crimea, and Caucasus. A mountain ridge on the Iturup Island ( Kruber Ridge), a karst cavity in the Qarabiy yayla plateauКараби-яйла, Crimea, and a karst cave A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can r ...
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Mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are Monadnock, isolated summits, but most occur in mountain ranges. Mountain formation, Mountains are formed through Tectonic plate, tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through Slump (geology), slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce Alpine climate, colder climates than at sea level at similar latitude. These colder climates strongly affect the Montane ecosystems, ecosys ...
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Soviet Geologists
This list of Russian Earth scientists includes the notable geographers, geologists, oceanographers, meteorologists, ecologists and other representatives of Earth sciences from the Russian Federation, the Soviet Union, the Russian Empire and other predecessor states of Russia. Alphabetical list __NOTOC__ A * Vladimir Abazarov, geologist, discoverer of Samotlor oil field, the largest Russian oil field *Dmitry Anuchin, anthropologist and geographer, coined the term "anthroposphere", determined the location of the Volga river source *Andrey Arkhangelsky, geologist B *Karl Baer, naturalist, formulated the geological Baer's law on river erosion, co-founder of the Russian Geographical Society *Valeri Barsukov, geologist *Vladimir Belousov, geologist *Lev Berg, determined the depth of Central Asian lakes, including Balkhash Lake and Issyk Kul, a head of the Soviet Geographical Society *Yuri Bilibin, geologist, studied placer geology and organized expeditions that discovered gold de ...
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Geographers From The Russian Empire
A geographer is a physical scientist, social scientist or humanist whose area of study is geography, the study of Earth's natural environment and human society, including how society and nature interacts. The Greek prefix "geo" means "earth" and the Greek suffix, "graphy," meaning "description," so a geographer is someone who studies the earth. The word "geography" is a Middle French word that is believed to have been first used in 1540. Although geographers are historically known as people who make maps, map making is actually the field of study of cartography, a subset of geography. Geographers do not study only the details of the natural environment or human society, but they also study the reciprocal relationship between these two. For example, they study how the natural environment contributes to human society and how human society affects the natural environment. In particular, physical geographers study the natural environment while human geographers study human societ ...
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Geologists From The Russian Empire
A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, although backgrounds in physics, chemistry, biology, and other sciences are also useful. Field research (field work) is an important component of geology, although many subdisciplines incorporate laboratory and digitalized work. Geologists can be classified in a larger group of scientists, called geoscientists. Geologists work in the energy and mining sectors searching for natural resources such as petroleum, natural gas, precious and base metals. They are also in the forefront of preventing and mitigating damage from natural hazards and disasters such as earthquakes, volcanoes, tsunamis and landslides. Their studies are used to warn the general public of the occurrence of these events. Geologists are also important contributors to climate chan ...
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Krubera-Voronya Cave
Krubera Cave ( ab, Ӡоу Аҳаҧы, ka, კრუბერის გამოქვაბული or კრუბერის ღრმული, tr; also known as Voronya Cave, sometimes spelled Voronja Cave) is the second-deepest-known cave on Earth, after the Veryovkina Cave. It is located in the Arabika Massif of the Gagra Range of the Western Caucasus, in the Gagra District of Abkhazia, a breakaway region of Georgia. The difference in elevation of the highest cave entrance (Arbaika) and its deepest explored point is . It became the deepest-known cave in the world in 2001 when the expedition of the Ukrainian Speleological Association reached a depth of which exceeded the depth of the previous deepest-known cave, Lamprechtsofen, in the Austrian Alps, by . In 2004, for the first time in the history of speleology, the Ukrainian Speleological Association expedition reached a depth greater than , and explored the cave to . Ukrainian diver Gennadiy Samokhin extended the c ...
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Cave
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ...
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Qarabiy Yayla
Qarabiy yayla (; uk, Карабі́-Яйла́, translit=Karabi-Yaila; russian: Караби́-яйла́, translit=Karabi-yayla) is a mountain range and botanical zakaznik (nature reserve) located in Crimea, a region internationally recognised as part of Ukraine but occupied by Russia since 2014. The highest range of the Crimean Mountains, Qarabiy yayla is best known for its picturesque views and large number of caves. Description Qarabiy yayla is a limestone mountain range located in the of the Crimean Mountains. It is the largest range of the Crimean Mountains, with its highest mountain, , stretching to a height of . Separating Qarabiy yayla from other ranges are four rivers; to the west is the and its tributary, the , separating Qarabiy yayla from . To the east are the and rivers. Qarabiy yayla is best known for its caves. The mountain range has over 3,500 caves, including (Crimea's deepest cave), , and . Another popular attraction in Qarabiy yayla is Tay Qoba, and ...
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Kruber Ridge
The Kruber Ridge is a mountain ridge on the Iturup Island. It is a chain of inactive volcanoes in the northeastern part of the Medvezhy Peninsula ("Bear Peninsula") of the island and constitutes part of the water divide between the Okhotsk Sea and the Pacific Ocean. The average elevation is 400-700m, the highest point being Mount Shibetoro ( Shibetoro Peak, Shibetoro-dake

(853m). A part of the ridge are the remnants of the walls of a vast

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Iturup Island
, other_names = russian: Итуру́п; ja, 択捉島 , location = Sea of Okhotsk , coordinates = , archipelago = Kuril Islands , total_islands = , major_islands = , area_km2 = 3139 , length_km = 200 , width_km = 27 , coastline = , highest_mount = Stokap , elevation_m = 1634 , country_claim = , country_claim_divisions_title_1 = Prefecture , country_claim_divisions_1 = Hokkaido , country_claim_divisions_title_2 = Subprefecture , country_claim_divisions_2 = Nemuro , country = , country_admin_divisions_title_1 = Federal subject , country_admin_divisions_1 = Sakhalin Oblast , country_admin_divisions_title_2 = District , country_admin_divisions_2 = Kurilsky , population = 7,500 , population_as_of = 2003 , density = , ethnic_groups = , additional_info = Iturup (russian: Остров Итуру́п, Ostrov Iturúp; ain, エツ゚ヲロㇷ゚ ...
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Ridge
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The lines along the crest formed by the highest points, with the terrain dropping down on either side, are called the ridgelines. Ridges are usually termed hills or mountains as well, depending on size. Smaller ridges, especially those leaving a larger ridge, are often referred to as spurs. Types There are several main types of ridges: ;Dendritic ridge: In typical dissected plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more erosion resistant rock, but not always – they often remain because there were more joints where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, often ...
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Caucasus
The Caucasus () or Caucasia (), is a region between the Black Sea and the Caspian Sea, mainly comprising Armenia, Azerbaijan, Georgia, and parts of Southern Russia. The Caucasus Mountains, including the Greater Caucasus range, have historically been considered as a natural barrier between Eastern Europe and Western Asia. Mount Elbrus in Russia, Europe's highest mountain, is situated in the Western Caucasus. On the southern side, the Lesser Caucasus includes the Javakheti Plateau and the Armenian highlands, part of which is in Turkey. The Caucasus is divided into the North Caucasus and South Caucasus, although the Western Caucasus also exists as a distinct geographic space within the North Caucasus. The Greater Caucasus mountain range in the north is mostly shared by Russia and Georgia as well as the northernmost parts of Azerbaijan. The Lesser Caucasus mountain range in the south is occupied by several independent states, mostly by Armenia, Azerbaijan, and Georgia, but also ...
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