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Gorleben
Gorleben is a small municipality ('' Gemeinde'') in the Gartow region of the Lüchow-Dannenberg district in the far north-east of Lower Saxony, Germany, a region also known as the Wendland. Gorleben was first recorded as a town by the rulers of Dannenberg in 1360; there was a fort on the site. The name "Gorleben" probably comes from ''Goor'' ("silt"; in Slavic, however, Gor means "mountain") and ''leben'' ("heritage"). Gorleben is known as the site of a controversial radioactive waste disposal facility, currently used as an intermediate storage facility initially planned to serve with the salt dome Gorleben as a future deep final repository for waste from nuclear reactors. As of September 28th, 2020 this is no longer the case as the entire area has been deemed unfit by 70 geologists in a national geographic survey for final repositories. It has attracted frequent protests from environmentalists since the 1970s. Geography The small town is directly on the left bank of the Elb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Dome Gorleben
The Gorleben salt dome is a proposed deep geological repository in a salt dome in Gorleben in the Lüchow-Dannenberg district in the far north-east of Lower Saxony for low-, medium- and high-level radioactive waste. Site selection At the end of 1973 the search began for a final salt dome storage. The plan was a repository for all types of radioactive waste in a salt dome. 24 salt domes were considered. The federal government asked the company KEWA (Kernbrennstoff-Wiederaufarbeitungs-Gesellschaft) to search for a location. On July 1, 1975 the KEWA proposed three sites in Lower Saxony for further investigation: the salt domes Lutterloh, Lichtenhorst and Wahn. The location Gorleben is not advantageous in this category. The investigation of the sites began with drilling holes. In November 1976 the Lower Saxony cabinet called for the Federal Government to examine the three sites, so they could designate a location. In February 1977 the Lower Saxony cabinet designated finally the G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-level Radioactive Waste Management
High-level radioactive waste management concerns how radioactive materials created during production of nuclear power and nuclear weapons are dealt with. Radioactive waste contains a mixture of short-lived and long-lived nuclides, as well as non-radioactive nuclides. There was reportedly some of high-level nuclear waste stored in the United States in 2002. The most troublesome transuranic elements in spent fuel are neptunium-237 (half-life two million years) and plutonium-239 (half-life 24,000 years). Consequently, high-level radioactive waste requires sophisticated treatment and management to successfully isolate it from the biosphere. This usually necessitates treatment, followed by a long-term management strategy involving permanent storage, disposal or transformation of the waste into a non-toxic form. Radioactive decay follows the half-life rule, which means that the rate of decay is inversely proportional to the duration of decay. In other words, the radiation from a lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lüchow-Dannenberg
Lüchow-Dannenberg is a district in Lower Saxony, Germany, which is usually referred to as Hanoverian Wendland (''Hannoversches Wendland'') or Wendland. It is bounded by (from the west and clockwise) the districts of Uelzen and Lüneburg and the states of Mecklenburg-Western Pomerania (district of Ludwigslust-Parchim), Brandenburg (district of Prignitz) and Saxony-Anhalt (districts of Stendal and Altmarkkreis Salzwedel). History In medieval times the counties of Lüchow and Dannenberg occupied the area (from the early 12th century on). These counties were originally Slavic states that lost their independence to the Duchy of Brunswick-Lüneburg in the beginning of the 14th century. Since that time it was always an eastern extension of different entities, usually states like West Germany. The area was ruled by Lüneburg until 1705 and then became a part of the Electorate of Hanover. When the Kingdom of Hanover was annexed by Prussia (1866), the districts of Lüchow and Dannenber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Geological Repository
A deep geological repository is a way of storing hazardous or radioactive waste within a stable geologic environment (typically 200–1000 m deep). It entails a combination of waste form, waste package, engineered seals and geology that is suited to provide a high level of long-term isolation and containment without future maintenance. This will prevent any radioactive dangers. A number of mercury, cyanide and arsenic waste repositories are operating worldwide including Canada (Giant Mine) and Germany (potash mines in Herfa-Neurode and Zielitz) and a number of radioactive waste storages are under construction with the Onkalo in Finland being the most advanced. Principles and background Highly toxic waste that cannot be further recycled must be stored in isolation to avoid contamination of air, ground and underground water. Deep geological repository is a type of long-term storage that isolates waste in geological structures that are expected to be stable for millions of years, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Geological Repository
A deep geological repository is a way of storing hazardous or radioactive waste within a stable geologic environment (typically 200–1000 m deep). It entails a combination of waste form, waste package, engineered seals and geology that is suited to provide a high level of long-term isolation and containment without future maintenance. This will prevent any radioactive dangers. A number of mercury, cyanide and arsenic waste repositories are operating worldwide including Canada (Giant Mine) and Germany (potash mines in Herfa-Neurode and Zielitz) and a number of radioactive waste storages are under construction with the Onkalo in Finland being the most advanced. Principles and background Highly toxic waste that cannot be further recycled must be stored in isolation to avoid contamination of air, ground and underground water. Deep geological repository is a type of long-term storage that isolates waste in geological structures that are expected to be stable for millions of years, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gartow
Gartow is a municipality in the district Lüchow-Dannenberg, in Lower Saxony, Germany. It is situated in the easternmost tip of Lower Saxony, not far from the river Elbe, approx. 30 km northeast of Salzwedel, and 20 km west of Wittenberge. Gartow is also the seat of the ''Samtgemeinde'' ("collective municipality") Gartow. Geography Gartow is located in the historical region Wendland, at the west shore of the river Seege, which is artificially formed to the ''Gartower See.'' Points of interest At Gartow, there is a facility for FM- and TV-transmission, with two over 300 metre tall guyed masts, the Gartow-Höhbeck transmitter. On August 20, 2009 the smaller mast has been demolished with explosives. Until the German reunification this transmitter was also used for the directional radio link to former West-Berlin (counter station: Richtfunkstelle Berlin-Frohnau). Nearby Gorleben Gorleben is a small municipality ('' Gemeinde'') in the Gartow region of the Lüchow-Dannenb ... [...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] |
Elbe
The Elbe (; cs, Labe ; nds, Ilv or ''Elv''; Upper and dsb, Łobjo) is one of the major rivers of Central Europe. It rises in the Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Republic), then Germany and flowing into the North Sea at Cuxhaven, northwest of Hamburg. Its total length is . The Elbe's major tributaries include the rivers Vltava, Saale, Havel, Mulde, Schwarze Elster, and Ohře. The Elbe river basin, comprising the Elbe and its tributaries, has a catchment area of , the twelfth largest in Europe. The basin spans four countries, however it lies almost entirely just in two of them, Germany (65.5%) and the Czech Republic (33.7%, covering about two thirds of the state's territory). Marginally, the basin stretches also to Austria (0.6%) and Poland (0.2%). The Elbe catchment area is inhabited by 24.4 million people, the biggest cities within are Berlin, Hamburg, Prague, Dresden and Leipzig. Etymology Firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drawehn
The Drawehn is a partly wooded and partly agricultural region of hills in the northeastern part of the German state of Lower Saxony, lying between the districts of Lüneburg and Uelzen in the west and Lüchow-Dannenberg in the east. It is named after the Slavic tribe of the Drevani. Definition In the German federal system of natural geographic regions, the Drawehn forms the eastern end of the Lüneburg Heath (D28), the '' Ostheide'', bordering the neighbouring area of Wendland and Altmark (D29). From a cultural perspective the Drawehn is, however, largely oriented towards Wendland. Its precise boundary is not clear: the name is often used synonymously for the ridge known as the East Hanoverian End Moraine (''Osthannoverschen Endmoräne''). Then again it may refer only to its southern portion - the northern part being referred to as the ''Göhrde''. Sources from the 14th to the 16th century counted the entire upper and lower geest west of the Jeetze plain and east of the Uelzen-B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U-shaped Valley
U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight sides and a flat or rounded bottom (by contrast, valleys carved by rivers tend to be V-shaped in cross-section). Glaciated valleys are formed when a glacier travels across and down a slope, carving the valley by the action of scouring. When the ice recedes or thaws, the valley remains, often littered with small boulders that were transported within the ice, called glacial till or glacial erratic. Examples of U-shaped valleys are found in mountainous regions throughout the world including the Andes, Alps, Caucasus Mountains, Himalaya, Rocky Mountains, New Zealand and the Scandinavian Mountains. They are found also in other major European mountains including the Carpathian Mountains, the Pyrenees, the Rila and Pirin mountains in Bulgaria, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsin Glaciation
The Wisconsin Glacial Episode, also called the Wisconsin glaciation, was the most recent glacial period of the North American ice sheet complex. This advance included the Cordilleran Ice Sheet, which nucleated in the northern North American Cordillera; the Innuitian ice sheet, which extended across the Canadian Arctic Archipelago; the Greenland ice sheet; and the massive Laurentide Ice Sheet, which covered the high latitudes of central and eastern North America. This advance was synchronous with global glaciation during the last glacial period, including the North American alpine glacier advance, known as the Pinedale glaciation. The Wisconsin glaciation extended from approximately 75,000 to 11,000 years ago, between the Sangamonian Stage and the current interglacial, the Holocene. The maximum ice extent occurred approximately 25,000–21,000 years ago during the last glacial maximum, also known as the ''Late Wisconsin'' in North America. This glaciation radically altered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area.Brown University, "Biogeography." Accessed February 24, 2014. . Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals. Mycogeography is the branch that studies distribution of fungi, such as mushrooms. Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, taxonomy, geology, physical geography, palaeontology, and climatology.Dansereau, Pierre. 1957 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
