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Lake Van
Lake Van (; ; ) is the largest lake in Turkey. It lies in the Eastern Anatolia Region of Turkey in the provinces of Van Province, Van and Bitlis Province, Bitlis, in the Armenian highlands. It is a Salt lake, saline Soda lake, soda lake, receiving water from many small streams that descend from the surrounding mountains. It is one of the world's few endorheic lakes (a lake having no outlet) of size greater than and has 38% of the country's surface water (including rivers). A volcanic eruption volcanic dam, blocked its original outlet in prehistoric times. It is situated at above sea level. Despite the high altitude and winter averages below , Brine, high salinity usually prevents it from freezing; the shallow northern section can freeze, but rarely. Hydrology and chemistry Lake Van is across at its widest point. It averages deep. Its greatest known depth is . The surface lies above sea level and the shore length is . It covers and contains (has a volume of) . The wester ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Province
Van Province (, , Armenian: Վանի մարզ) is a province and metropolitan municipality in the Eastern Anatolian region of Turkey, between Lake Van and the Iranian border. Its area is 20,921 km2, and its population is 1,128,749 (2022). Its adjacent provinces are Bitlis to the west, Siirt to the southwest, Şırnak and Hakkâri to the south, and Ağrı to the north. The capital of the province is the city of Van, with a population of 525,016 at the end of 2022. The second-largest city is Erciş, with 92,945 inhabitants at end 2022. The province was part of ancient province of Vaspurakan and is considered to be one of the cradles of Armenian civilization. Before the Armenian genocide, Van Province was one of the six Armenian vilayets. A majority of the population of the province is Kurdish. Demographics The province is mainly populated by Kurds and considered part of Turkish Kurdistan. The province had a significant Christian Armenian population until the genocide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armenian Highlands
The Armenian highlands (; also known as the Armenian upland, Armenian plateau, or Armenian tableland)Robert Hewsen, Hewsen, Robert H. "The Geography of Armenia" in ''The Armenian People From Ancient to Modern Times Volume I: The Dynastic Periods: From Antiquity to the Fourteenth Century''. Richard G. Hovannisian (ed.) New York: St. Martin's Press, 1997, pp. 1–17 comprise the most central and the highest of the three plateaus that together form the northern sector of West Asia. Clockwise starting from the west, the Armenian highlands are bounded by the Anatolia, Anatolian plateau, the Caucasus, the Kur-Araz Lowland, Kura-Aras lowlands, the Iranian Plateau, and Mesopotamia. The highlands are divided into western and eastern regions, defined by the Ararat Plain, Ararat Valley where Mount Ararat is located. Western Armenia is nowadays referred to as Eastern Anatolia. On the other hand, Eastern Armenia is part of Lesser Caucasus or Caucasus Minor, which was historically known by some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Anatolia Region
The Eastern Anatolia region () is a geographical region of Turkey. The most populous province in the region is Van Province. Other populous provinces are Malatya, Erzurum and Elazığ. It is bordered by the Black Sea Region and Georgia in the north, the Central Anatolia Region in the west, the Mediterranean Region in the southwest, the Southeastern Anatolia Region and Iraq in the south, and Armenia, Azerbaijan, and Iran in the east. The region encompasses most of Western Armenia and had a large population of indigenous Armenians until the Armenian genocide. The Anatolia peninsula historically never encompassed what is now called "Eastern Anatolia" which was, instead, referred to as the Armenian highlands. It was renamed by the newly founded Turkish Republic in the 1920s. This has been seen as an attempt by Turkey to erase the Armenian history of the region. It has the highest average altitude, largest geographical area, and lowest population density of the seven Turki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth's Crust
Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth's layers that includes the crust and the upper part of the mantle. The lithosphere is broken into tectonic plates whose motion allows heat to escape the interior of Earth into space. The crust lies on top of the mantle, a configuration that is stable because the upper mantle is made of peridotite and is therefore significantly denser than the crust. The boundary between the crust and mantle is conventionally placed at the Mohorovičić discontinuity, a boundary defined by a contrast in seismic velocity. The temperature of the crust increases with depth, reaching values typically in the range from about at the boundary with the underlying mantle. The temperature increases by as much as for every kilometer locally in the upper part of the crust. Composition File:Elementa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Detergent
A detergent is a surfactant or a mixture of surfactants with Cleanliness, cleansing properties when in Concentration, dilute Solution (chemistry), solutions. There are a large variety of detergents. A common family is the alkylbenzene sulfonates, which are soap-like compounds that are more soluble than soap in hard water, because the polar sulfonate is less likely than the polar carboxylate of soap to bind to calcium and other ions found in hard water. Definitions The word ''detergent'' is derived from the Latin adjective , from the verb , meaning to wipe or polish off. Detergent can be defined as a surfactant or a mixture of surfactants with cleansing properties when in Concentration, dilute Solution (chemistry), solutions. However, conventionally, detergent is used to mean synthetic cleaning compounds as opposed to ''soap'' (a salt of the natural fatty acid), even though soap is also a detergent in the true sense. In domestic contexts, the term ''detergent'' refers to househ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Evaporation Pond
A salt evaporation pond is a shallow artificial salt pan designed to extract salts from sea water or other brines. The salt pans are shallow and expansive, allowing sunlight to penetrate and reach the seawater. Natural salt pans are formed through geologic processes, where evaporating water leaves behind salt deposits. Some salt evaporation ponds are only slightly modified from their natural version, such as the ponds on Great Inagua in the Bahamas, or the ponds in Jasiira, a few kilometres south of Mogadishu, where seawater is trapped and left to evaporate in the sun. During the process of salt winning, seawater or brine is fed into artificially created ponds from which water is drawn out by evaporation, allowing the salt to be subsequently harvested. The ponds also provide a productive resting and feeding ground for many species of waterbirds, which may include endangered species. However, Ghanaian fisheries scientist RoseEmma Mamaa Entsua-Mensah also noted that salt win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Carbonate
Sodium carbonate (also known as washing soda, soda ash, sal soda, and soda crystals) is the inorganic compound with the formula and its various hydrates. All forms are white, odourless, water-soluble salts that yield alkaline solutions in water. Historically, it was extracted from the ashes of plants grown in sodium-rich soils, and because the ashes of these sodium-rich plants were noticeably different from ashes of wood (once used to produce potash), sodium carbonate became known as "soda ash". It is produced in large quantities from sodium chloride and limestone by the Solvay process, as well as by carbonating sodium hydroxide which is made using the chloralkali process. Hydrates Sodium carbonate is obtained as three hydrates and as the anhydrous salt: * sodium carbonate decahydrate ( natron), Na2CO3·10H2O, which readily effloresces to form the monohydrate. * sodium carbonate heptahydrate (not known in mineral form), Na2CO3·7H2O. * sodium carbonate monohydrate ( thermonatr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaline
In chemistry, an alkali (; from the Arabic word , ) is a basic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The adjective alkaline, and less often, alkalescent, is commonly used in English as a synonym for basic, especially for bases soluble in water. This broad use of the term is likely to have come about because alkalis were the first bases known to obey the Arrhenius definition of a base, and they are still among the most common bases. Etymology The word ''alkali'' is derived from Arabic ''al qalīy'' (or ''alkali''), meaning (see calcination), referring to the original source of alkaline substances. A water-extract of burned plant ashes, called potash and composed mostly of potassium carbonate, was mildly basic. After heating this substance with calcium hydroxide (''slaked lime''), a far more strongly basic substance known as ''caustic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akhtamar Island On Lake Van With The Armenian Cathedral Of The Holy Cross
Akdamar Island (), also known as Aghtamar () or Akhtamar (; ), is the second largest of the four main islands in Lake Van, in eastern Turkey. About 0.7 km2 in size, it is situated approximately 3 km from the shoreline. At the western end of the island, a hard, grey, limestone cliff rises 80 m above the lake's level (1,912 m above sea level). The island declines to the east to a level site where a spring provides ample water. It is home to the 10th century Armenian Holy Cross Cathedral, which was the seat of the Armenian Apostolic Catholicosate of Aghtamar from 1116 to 1895. Etymology The origin and meaning of the island's name is unknown, but a folk etymology explanation exists, based on an old Armenian legend. According to the tale, an Armenian princess named ''Tamar'' lived on the island and was in love with a commoner. This boy would swim from the shore to the island each night, guided by a light she lit for him. Her father learned of the boy's visits. One night, as she wai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brine
Brine (or briny water) is a high-concentration solution of salt (typically sodium chloride or calcium chloride) in water. In diverse contexts, ''brine'' may refer to the salt solutions ranging from about 3.5% (a typical concentration of seawater, on the lower end of that of solutions used for brining foods) up to about 26% (a typical saturated solution, depending on temperature). Brine forms naturally due to evaporation of ground saline water but it is also generated in the mining of sodium chloride. Brine is used for food processing and cooking (pickling and brining), for de-icing of roads and other structures, and in a number of technological processes. It is also a by-product of many industrial processes, such as desalination, so it requires wastewater treatment for proper disposal or further utilization (fresh water recovery). In nature Brines are produced in multiple ways in nature. Modification of seawater via evaporation results in the concentration of salts in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Dam
A volcanic dam is a type of natural dam produced directly or indirectly by volcanism, which holds or temporarily restricts the flow of surface water in existing streams, like a man-made dam. There are two main types of volcanic dams, those created by the flow of molten lava, and those created by the primary or secondary deposition of pyroclastic material and debris. This classification generally excludes other, often larger and longer lived dam-type geologic features, separately termed crater lakes, although these volcanic centers may be associated with the source of material for volcanic dams, and the lowest portion of its confining rim may be considered as such a dam, especially if the lake level within the crater is relatively high. Volcanic dams generally occur worldwide, in association with former and active volcanic provinces, and are known to have existed in the geologic record, in historic times and occur in the present day. Their removal or failure is similarly rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endorheic Lake
An endorheic lake (also called a sink lake or terminal lake) is a collection of water within an endorheic basin, or sink, with no evident outlet. Endorheic lakes are generally Saline water, saline as a result of being unable to get rid of solutes left in the lake by evaporation. These lakes can be used as indicators of Human impact on the environment, anthropogenic change, such as irrigation or climate change, in the areas surrounding them. Lakes with subsurface drainage are called ''cryptorheic''. Components of endorheic lakes The two main ways that endorheic lakes accumulate water are through river flow into the lake (discharge) and precipitation falling into the lake. The collected water of the lake, instead of Discharge (hydrology), discharging, can only be lost due to either evapotranspiration or percolation (water sinking underground, e.g., to become groundwater in an aquifer). Because of this lack of an outlet, endorheic lakes are mostly salt water rather than fresh water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
