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Flatt (landform)
''Schlatt'' or ''Flatt'' is the Lower Saxony, Lower Saxon name for a heathland pond, an undrained body of water usually shallow, that is fed by surface water and is largely unaffected by ground water. The water is impounded by a water-retentive layer. Most ''Schlatts'' can dry out from time to time. ''Schlatts'' are characteristic of the nutrient-poor geest (topography), geest ridges of the North German Plain. Most of them were formed as wind-blown hollows in the periglacial region of the Weichselian Glaciation, last ice age. The term is of Lower Saxon origin and is used mainly for the ponds in that part of Germany. In the district of Landkreis Diepholz, Diepholz (Lower Saxony) the Conservation Foundation (''Stiftung Naturschutz'') has taken upon itself the preservation of ''Schlatts'' as part of a ''Schlatt'' programme. Using volunteers working with the land owners and farmers over 300 small ponds and ''Schlatts'' have been cleaned up and maintained in order to preserve them as h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Saxony
Lower Saxony (german: Niedersachsen ; nds, Neddersassen; stq, Läichsaksen) is a German state (') in northwestern Germany. It is the second-largest state by land area, with , and fourth-largest in population (8 million in 2021) among the 16 ' federated as the Federal Republic of Germany. In rural areas, Northern Low Saxon and Saterland Frisian are still spoken, albeit in declining numbers. Lower Saxony borders on (from north and clockwise) the North Sea, the states of Schleswig-Holstein, Hamburg, , Brandenburg, Saxony-Anhalt, Thuringia, Hesse and North Rhine-Westphalia, and the Netherlands. Furthermore, the state of Bremen forms two enclaves within Lower Saxony, one being the city of Bremen, the other its seaport, Bremerhaven (which is a semi-enclave, as it has a coastline). Lower Saxony thus borders more neighbours than any other single '. The state's largest cities are state capital Hanover, Braunschweig (Brunswick), Lüneburg, Osnabrück, Oldenburg, Hildesheim, Salzgitt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Water
Surface water is water located on top of land forming terrestrial (inland) waterbodies, and may also be referred to as ''blue water'', opposed to the seawater and waterbodies like the ocean. The vast majority of surface water is produced by precipitation. As the climate warms in the spring, snowmelt runs off towards nearby streams and rivers contributing towards a large portion of human drinking water. Levels of surface water lessen as a result of evaporation as well as water moving into the ground becoming ground-water. Alongside being used for drinking water, surface water is also used for irrigation, wastewater treatment, livestock, industrial uses, hydropower, and recreation. For USGS water-use reports, surface water is considered freshwater when it contains less than 1,000 milligrams per liter (mg/L) of dissolved solids. There are three major types of surface water. Permanent (perennial) surface waters are present year round, and includes lakes, rivers and wetlands (marshe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Water
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, permafro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geest (topography)
Geest is a type of landform, slightly raised above the surrounding countryside, that occurs on the plains of Northern Germany, the Northern Netherlands and Denmark. It is a landscape of sandy and gravelly soils formed as a glacial outwash plain and now usually mantled by a heathland vegetation on the glacial deposits left behind after the last ice age during the Pleistocene epoch.Whittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, p. 214. . The term ''geest'' is a substantivisation of the Low German adjective ''güst'', which means "dry and infertile". It is an Old Drift landscape, characterised by the sandy depositions of the Ice Age. In the depressions between the raised flats are wet meadows and, where drainage is poor, bogs. Geest lands are made up of moraines and sandurs. They are almost always next to flat marshlands, the geest being higher and better protected against flood but, compared to the marsh, with poor soil for agriculture. Where the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North German Plain
The North German Plain or Northern Lowland (german: Norddeutsches Tiefland) is one of the major geographical regions of Germany. It is the German part of the North European Plain. The region is bounded by the coasts of the North Sea and the Baltic Sea to the north, Germany's Central Uplands (''die Mittelgebirge'') to the south, by the Netherlands to the west and Poland to the east. In the west, the southern boundary of the North German Plain is formed by the Lower Saxon Hills: specifically the ridge of the Teutoburg Forest, the Wiehen Hills, the Weser Hills and the Lower Saxon Börde, which partly separate it from that area of the Plain known as the Westphalian Lowland. Elements of the Rhenish Massif also act a part of the southern boundary of the plain: the Eifel, Bergisches Land and the Sauerland. In the east the North German Plain spreads out beyond the Harz Mountains and Kyffhäuser further to the south as far as the Central Saxon hill country and the foothills of the Ore M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periglacial
Periglaciation (adjective: "periglacial", also referring to places at the edges of glacial areas) describes geomorphic processes that result from seasonal thawing of snow in areas of permafrost, the runoff from which refreezes in ice wedges and other structures. "Periglacial" suggests an environment located on the margin of past glaciers. However, freeze and thaw cycles influence landscapes outside areas of past glaciation. Therefore, periglacial environments are anywhere that freezing and thawing modify the landscape in a significant manner. Tundra is a common ecological community in periglacial areas. History Periglaciation became a distinct subject within the study of geology after Walery Łoziński, a Polish geologist, introduced the term in 1909. Łoziński drew upon the early work of Johan Gunnar Andersson. According to Alfred Jahn, his introduction of his work at the 1910 International Geological Congress held in Stockholm caused significant discussion. In the field trip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weichselian Glaciation
The Weichselian glaciation was the last glacial period and its associated glaciation in northern parts of Europe. In the Alpine region it corresponds to the Würm glaciation. It was characterized by a large ice sheet (the Fenno-Scandian ice sheet) that spread out from the Scandinavian Mountains and extended as far as the east coast of Schleswig-Holstein, northern Poland and Northwest Russia. This glaciation is also known as the Weichselian ice age (german: Weichsel-Eiszeit), Vistulian glaciation, Weichsel or, less commonly, the Weichsel glaciation, Weichselian cold period (''Weichsel-Kaltzeit''), Weichselian glacial (''Weichsel-Glazial''), ''Weichselian Stage'' or, rarely, the Weichselian complex (''Weichsel-Komplex''). In Northern Europe it was the youngest of the glacials of the Pleistocene ice age. The preceding warm period in this region was the Eemian interglacial. The last cold period began about 115,000 years ago and ended 11,700 years ago. Its end corresponds with the end o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landkreis Diepholz
Diepholz () is a district in Lower Saxony, Germany. It is bounded by (from the northeast and clockwise) the districts of Verden, Nienburg, Minden-Lübbecke (in North Rhine-Westphalia), Osnabrück, Vechta and Oldenburg, and by the cities of Delmenhorst and Bremen. The most populous municipality is Stuhr at the border to Bremen. History From the 12th century to 1585 Diepholz was a sovereign Noble Lordship, later County, within the Holy Roman Empire that was ruled over by the Noble Lords, later Counts, of Diepholz. At the beginning of the 16th century there was great pressure from the powerful duchy of Brunswick-Lüneburg, which tried to annex the smaller states. By forming an alliance with the neighbouring County of Hoya and asking for help from the emperor An emperor (from la, imperator, via fro, empereor) is a monarch, and usually the sovereignty, sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogeology
Hydrogeology (''hydro-'' meaning water, and ''-geology'' meaning the study of the Earth) is the area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust (commonly in aquifers). The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably. Hydrogeology is the study of the laws governing the movement of subterranean water, the mechanical, chemical, and thermal interaction of this water with the porous solid, and the transport of energy, chemical constituents, and particulate matter by flow (Domenico and Schwartz, 1998). Groundwater engineering, another name for hydrogeology, is a branch of engineering which is concerned with groundwater movement and design of wells, pumps, and drains. The main concerns in groundwater engineering include groundwater contamination, conservation of supplies, and water quality.Walton, William C. (November 1990). ''Principles of Groundwater Engin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnology
Limnology ( ; from Greek λίμνη, ''limne'', "lake" and λόγος, ''logos'', "knowledge") is the study of inland aquatic ecosystems. The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, and groundwater.Wetzel, R.G. 2001. Limnology: Lake and River Ecosystems, 3rd ed. Academic Press () Water systems are often categorized as either running (lotic) or standing (lentic). Limnology includes the study of the drainage basin, movement of water through the basin and biogeochemical changes that occur en route. A more recent sub-discipline of limnology, termed landscape limnology, studies, manages, and seeks to conserve these ecosystems using a landscape perspective, by explicitly examining connections between an aquatic ecosystem and its drainage basin. Recently, the need to underst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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