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Étang De Lavalduc
Étang de Lavalduc, or La Valduc, is a saltwater lagoon with varying levels of salinity in the Mediterranean Sea, west of the Étang de Berre and north of Fos-sur-Mer. The property belonging to the Salins du Midi company, which has made it a storage tank for brine. It is located in three municipalities: Saint-Mitre-les-Remparts, Istres and Fos-sur-Mer, Bouches-du-Rhône. Its coloring of an iridescent pink blue is due to the presence of small crustaceans such as ''Artemia salina''. Located at an average altitude of about 10 m below sea level, it is the lowest point in France. Geography Topography The Étang de Lavalduc is, along with the Étang de Pourra, the Étang de Citis, the Étang de Engrenier, the Étang de Rassuen and the Étang de Estomac, part of the five ponds grouped between the Étang de Berre and the Gulf of Fos in the Mediterranean, near the plain of La Crau and the Parc naturel régional de Camargue. The lagoon is located inside a basin of 2.5 x 1.750 km, formed b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bouches-du-Rhône
Bouches-du-Rhône ( ; , ; ; "the Mouths of the Rhône") is a Departments of France, department in southern France. It borders Vaucluse to the north, Gard to the west and Var (department), Var to the east. The Mediterranean Sea lies to the south. Its Prefectures in France, prefecture and largest city is Marseille; other important cities include Aix-en-Provence, Arles, Martigues and Aubagne. Marseille, France's second-largest city, has one of the largest Containerization, container ports in the country. It prides itself on being France's oldest city, founded by Greek settlers from Phocaea around 600 BC. Bouches-du-Rhône is the most populous department of the Provence-Alpes-Côte d'Azur Regions of France, region, with 2,043,110 inhabitants as of 2019.Populations légales 2019: 13 Bouches-du-Rhône< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parc Naturel Régional De Camargue
The Parc naturel régional de Camargue is a protected area which was designated in 1970 along the shoreline of the Camargue, France. The park protects a wetland environment and an adjacent marine area. The boundaries of the park have been expanded to include a lagoon called the Étang de Vaccarès. The Camargue is also the site of a national nature reserve, and has been designated by UNESCO as a biosphere reserve. Twinning The park is twinned with a Spanish wetland, the Doñana National Park at the mouth of the Guadalquivir. The two parks share a number of characteristics including significance for bird-life and semi-feral horses, and proximity to a pilgrimage site (Saintes-Maries-de-la-Mer and the Hermitage of El RocÃo).El hermanamiento del Espacio Natural de Doñana y la Camarga francesaArticle on the twinning In 1992, the site was formally twinned with the Danube Delta Biosphere Reserve Ramsar site by an agreement between the governments of Romania and France. Ramsar si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Bouches-du-Rhône
A landform is a land feature on the solid surface of the Earth or other planetary body. They may be natural or may be anthropogenic (caused or influenced by human activity). Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great oceanic basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, structure stratification, rock exposure, and soil type. Gross physical features or landforms include intuitive elements such as berms, cliffs, hills, mounds, peninsulas, ridges, rivers, valleys, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Provence-Alpes-Côte D'Azur
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of oceans or large la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retention Basin
A retention basin, sometimes called a retention pond, wet detention basin, or storm water management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design. It is used to manage stormwater runoff, for protection against flooding, for erosion control, and to serve as an artificial wetland and improve the water quality in adjacent bodies of water. It is distinguished from a detention basin, sometimes called a "dry pond", which temporarily stores water after a storm, but eventually empties out at a controlled rate to a downstream water body. It also differs from an infiltration basin which is designed to direct stormwater to groundwater through permeable soils. Wet ponds are frequently used for water quality improvement, groundwater recharge, flood protection, aesthetic improvement, or any combination of these. Sometimes they act as a replacement for the natural absorption of a forest or other natural process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead Sea
The Dead Sea (; or ; ), also known by #Names, other names, is a landlocked salt lake bordered by Jordan to the east, the Israeli-occupied West Bank to the west and Israel to the southwest. It lies in the endorheic basin of the Jordan Rift Valley, and its main tributary is the Jordan River. As of 2025, the lake's surface is below sea level, making its shores the Lowest elevations, lowest land-based elevation on Earth. It is deep, the deepest hypersaline lake in the world. With a salinity of 342 g/kg, or 34.2% (in 2011), it is one of the List of bodies of water by salinity, world's saltiest bodies of water, 9.6 times as Seawater#Salinity, salty as the ocean—and has a density of 1.24 kg/litre, which makes swimming similar to Buoyancy, floating. This salinity makes for a harsh environment in which plants and animals cannot flourish, hence its name. The Dead Sea's main, northern basin is long and wide at its widest point. The Dead Sea has attracted visitors from around th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimedes' Screw
The Archimedes' screw, also known as the Archimedean screw, hydrodynamic screw, water screw or Egyptian screw, is one of the earliest documented hydraulic machines. It was so-named after the Greek mathematician Archimedes who first described it around 234 BC, although the device had been developed in Egypt earlier in the century. It is a reversible hydraulic machine that can be operated both as a pump or a power generator. As a machine used for lifting water from a low-lying body of water into irrigation ditches, water is lifted by turning a screw-shaped surface inside a pipe. In the modern world, Archimedes screw pumps are widely used in wastewater treatment plants and for dewatering low-lying regions. Run in reverse, Archimedes screw turbines act as a new form of small hydroelectric powerplant that can be applied even in low head sites. Such generators operate in a wide range of flows (0.01 m^3/s to 14.5 m^3/s) and heads (0.1 m to 10 m), including low heads and moderate flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crau
The Crau is the ancient confluence of the Durance and Rhône, and constitutes their vast flat alluvial fan. Agriculture The Crau is composed of two different parts: The dry Crau is in the south, and has been used as pasture from Roman times. There are around 100,000 sheep , including the Merino sheep. The wet Crau is in the north and includes the ''communes'' of Saint-Martin-de-Crau, Eyguières, Istres, Mouriès, and Arles. It produces the Crau hay, which benefits from an Appellation d’origine contrôlée Flora and fauna *Thyme * Holm oak * Pin-tailed sandgrouse *Little bustard *Lesser kestrel History The Crau was described by Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ... as the ''Stony Plain'' (Book IV Chapter 1). External links La Crau, on Arles website ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riss Glaciation
The Riss glaciation, Riss Glaciation, Riss ice age, Riss Ice Age, Riss glacial or Riss Glacial (, ', ' or (obsolete) ') is the second youngest glaciation of the Pleistocene epoch in the traditional, quadripartite glacial classification of the Alps. The literature variously dates it to between about 300,000 to 130,000 years ago and 347,000 to 128,000 years ago. It coincides with the glaciation of North Germany. The name goes back to and who named this cold period after the river in Upper Swabia in their three-volume work ' ("The Alps in the Ice Age") published between 1901 and 1909. Boundaries and division The Riss glaciation was defined by Penck and Brückner as the Lower (''Niedere'') or Younger Old Moraines and Old Terminal Moraines High Terraces (''Jüngere Altmoränen und Alt-Endmoränen-Hochterrassen''). The type locality lies near Biberach an der Riß where the end of the northeastern Rhine Glacier stood. Results gained from over a century of research show that in al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Crau
La Crau (; ) is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France. Population Twin towns La Crau is twinned with: * Villeneuve, Vaud, Switzerland, since 1987 * Rosà , Italy, since 2006 * Schallstadt, since 2018 See also *Communes of the Var department The following is a list of the 153 Communes of France, communes of the Var (department), Var Departments of France, department of France. The communes cooperate in the following Communes of France#Intercommunality, intercommunalities (as of 2025 ... References Communes of Var (department) {{Var-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provence
Provence is a geographical region and historical province of southeastern France, which stretches from the left bank of the lower Rhône to the west to the France–Italy border, Italian border to the east; it is bordered by the Mediterranean Sea to the south. It largely corresponds with the modern administrative Regions of France, region of Provence-Alpes-Côte d'Azur and includes the Departments of France, departments of Var (department), Var, Bouches-du-Rhône, Alpes-de-Haute-Provence, as well as parts of Alpes-Maritimes and Vaucluse.''Le Petit Robert, Dictionnaire Universel des Noms Propres'' (1988). The largest city of the region and its modern-day capital is Marseille. The Ancient Rome, Romans made the region the first Roman province beyond the Alps and called it ''Provincia Romana'', which evolved into the present name. Until 1481 it was ruled by the List of rulers of Provence, counts of Provence from their capital in Aquae Sextiae (today Aix-en-Provence), then became ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artemia Salina
''Artemia salina'' is a species of brine shrimp – aquatic crustaceans that are more closely related to '' Triops'' and cladocerans than to true shrimp. It belongs to a lineage that does not appear to have changed much in . ''Artemia salina'' is native to saline lakes, ponds, and temporary waters (not seas) in the Mediterranean region of Southern Europe, Anatolia, and Northern Africa. Considerable taxonomic confusion exists, and some populations elsewhere have formerly been referred to as this species, but are now recognized as separate species. Description ''Artemia salina'' has three eyes and 11 pairs of legs and can grow to about in size. Its blood contains the pigment hemoglobin, which is also found in vertebrates. Males differ from females by having their second antennae markedly enlarged, and modified into clasping organs used in mating. Life cycle Males have two reproductive organs. Prior to copulation, the male clasps the female with his clasping organ, assuming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
