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Lake Beloslav
Lake Beloslav ( bg, Белославско езеро) is a liman, which connected by a navigation canal with Lake Varna. Before the canal was built the lake was freshwater, but now the water is brackish. The rivers Devnya and Provadiyska flow into Lake Beloslav. The area of the liman is about 10 square km, with a width of 0.5-3.5 km, maximal depth 14 m, and salinity of about 10‰. Beloslav Beloslav ( bg, Белослав ) is a small industrial town in Varna Province, Northeastern Bulgaria, located 19 km away to the west from Varna downtown and Bulgarian Black Sea coast. It is the administrative centre of the homonymous Belo ... Estuaries of the Black Sea Bulgarian Black Sea Coast Varna, Bulgaria Landforms of Varna Province {{bulgaria-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liman (landform)
Liman (; ro, liman) is an enlarged estuary formed as a lagoon at the wide mouth of one or several rivers, where flow is constrained by a bar of sediments, as in the Dniester Liman or the Razelm liman. A ''liman'' can be maritime (the bar being created by the current of a sea) or fluvial (the bar being created by the slowed or turned flow of a sediment-saturated river). The term describes many wet estuaries in the Black Sea and the Sea of Azov; a synonymous term guba (губа) is used in Russian sources for estuaries of the Russian shores in the north. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Varna
Lake Varna ( bg, Варненско езеро, ) is the largest by volume and deepest liman or lake along the Bulgarian Black Sea Coast, divided from the sea by a 2 km-wide strip of sand and having an area of 19 km², maximal depth 19 m, and a volume of 166 million m³. The lake has an elongated shape, its south shores are high, steep and wooded, and the north slant. Lake Varna was formed in a river valley by the raising of sea level near the end of the Pleistocene. Its bottom is covered by a thick alluvium of slime and hydrogen sulphide mud in the deepest parts; there are large deposits of medicinal ''fango'' (mineral mud). A number of rivers pour into the lake, including Devnya and Provadiyska that empty near the western shores of Lake Beloslav, which is connected to Lake Varna. Until the 20th century, fresh water from the lake emptied into the Black Sea through the Devnya River, but following the construction of the modern Port of Varna East (and the subsequent dra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackish Water
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root '' brak''. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms). Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a specific gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as Stream#Creek, creek, Stream#Brook, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to Geographical feature, geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "Burn (landform), burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from Precipitation (meteorology), precipitation through a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devnya
Devnya ( bg, Девня ) is a town in Varna Province, Northeastern Bulgaria, located about 25 km away to the west from the city of Varna and The Black Sea Coast. It is the administrative centre of the homonymous Devnya Municipality. As of December 2009, the town has a population of 8,383 inhabitants.Bulgarian National Statistical Institute - towns in 2009 
It lies at the western shore of in the northeastern end of the Devnya Valley an ...
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Provadiyska
Provadiya (Провадия, Провадийска река, ''Provadiya, Provadiyska reka''; "Provadiya river") is a river in northeastern Bulgaria. It takes its name from the town of Provadiya. It is 119 km long and has a drainage basin of 2,132 km2. The river takes its source from close to the village of Dobri Voynikovo in Shumen Province, flowing southeast and then making a sharp turn northeast to empty into Lake Beloslav. It is part of the Black Sea drainage area, as Lake Beloslav is connected to Lake Varna Lake Varna ( bg, Варненско езеро, ) is the largest by volume and deepest liman or lake along the Bulgarian Black Sea Coast, divided from the sea by a 2 km-wide strip of sand and having an area of 19 km², maximal depth 19 m ... and it to the Black Sea. References Rivers of Bulgaria Landforms of Varna Province Landforms of Shumen Province Tributaries of the Black Sea {{Bulgaria-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salinity
Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal to ‰). Salinity is an important factor in determining many aspects of the chemistry of natural waters and of biological processes within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water. A contour line of constant salinity is called an ''isohaline'', or sometimes ''isohale''. Definitions Salinity in rivers, lakes, and the ocean is conceptually simple, but technically challenging to define and measure precisely. Conceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sodium bicarbonate which dissolve into ions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoons Of Bulgaria
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') and ''atoll lagoons''. They have also been identified as occurring on mixed-sand and gravel coastlines. There is an overlap between bodies of water classified as coastal lagoons and bodies of water classified as estuaries. Lagoons are common coastal features around many parts of the world. Definition and terminology Lagoons are shallow, often elongated bodies of water separated from a larger body of water by a shallow or exposed shoal, coral reef, or similar feature. Some authorities include fresh water bodies in the definition of "lagoon", while others explicitly restrict "lagoon" to bodies of water with some degree of salinity. The distinction between "lagoon" and "estuary" also varies between authorities. Richard A. Davis Jr. restricts "l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuaries Of The Black Sea
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, harb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgarian Black Sea Coast
The Bulgarian Black Sea Coast (), also known as the Bulgarian Riviera, covers the entire eastern bound of Bulgaria stretching from the Romanian Black Sea resorts in the north to European Turkey in the south, along 378 km of coastline. White and golden sandy beaches occupy approximately 130 km of the 378 km long coast. The region is an important center of tourism during the summer season (May–October), drawing millions of foreign and local tourists alike and constituting one of the country's most popular tourist destinations. Prior to 1989 the Bulgarian Black Sea coast was internationally known as the ''Red Riviera''. Since the fall of the Iron Curtain, however, its nickname has been changed to the ''Bulgarian Riviera''. The Bulgarian Black Sea Coast has a humid subtropical climate (Köppen climate classification ''Cfa''), with considerable maritime and continental influences. The area's average air temperature in the summer is about 28 °C, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
