|
Wulff Land
Wulff Land () is a peninsula in far northwestern Greenland. Administratively it is a part of the Northeast Greenland National Park. History Wulff Land was named after Swedish botanist and Arctic explorer Thorild Wulff (1867–1917), who went with Knud Rasmussen on the Second Thule Expedition and died from fatigue near Cape Agassiz in southern Peabody Bay.Mark Nuttall, ''Encyclopedia of the Arctic'', p. 1744 The Wulff Land peninsula is a barren and inhospitable place. Unlike Peary Land to the northeast, no remains of human habitation have been found. Geography Wulff Land is located to the northeast of Warming Land and east of Hendrik Island across the Sherard Osborn Fjord. Nares Land lies to the east, across the Victoria Fjord and Stephenson Island to the northeast. Cape May in the Lincoln Sea is its northernmost headland. To the south, the peninsula is attached to the mainland and its ice cap. Wulff Land is a largely unglaciated and mountainous peninsula with a large firn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sherard Osborn Fjord
Sherard Osborn Fjord is a fjord in northern Greenland. To the NNW, the fjord opens into the Lincoln Sea. Administratively it is part of the Northeast Greenland National Park. This fjord was named after Royal Navy admiral and Arctic explorer Sherard Osborn (1822 – 1875). Geography It is a fjord with a wide mouth that opens to the NNW between Dragon Point at the northern end of Hendrik Island, and Cape May, Greenland, Cape May, at the northwestern end of Wulff Land. Hendrik Island forms the western shore of the fjord north of the Hartz Sound and smaller high Castle Island, Greenland, Castle Island lies in Saint Andrew Bay off the northeastern shore of Hendrik Island. Sherard Osborn Fjord forms Wulff Land's western coastline and Hendrik Island forms part of the northern half of the facing shore, while the shore south of the Hartz Sound that separates the island from the mainland is part of Warming Land on one side and Permin Land on the other. The Hartz Sound connects the area of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Cap
In glaciology, an ice cap is a mass of ice that covers less than of land area (usually covering a highland area). Larger ice masses covering more than are termed ice sheets. Description By definition, ice caps are not constrained by topographical features (i.e., they must lie over the top of mountains). By contrast, ice masses of similar size that ''are'' constrained by topographical features are known as ice fields. The ''dome'' of an ice cap is usually centred on the highest point of a massif. Ice flows away from this high point (the ice divide) towards the ice cap's periphery. Ice caps significantly affect the geomorphology of the area they occupy. Plastic moulding, gouging and other glacial erosional features become present upon the glacier's retreat. Many lakes, such as the Great Lakes in North America, as well as numerous valleys have been formed by glacial action over hundreds of thousands of years. The Antarctic and Greenland contain 99% of the ice volume on earth, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trace Fossil
A trace fossil, also called an ichnofossil (; ), is a fossil record of biological activity by lifeforms, but not the preserved remains of the organism itself. Trace fossils contrast with body fossils, which are the fossilized remains of parts of organisms' bodies, usually altered by later chemical activity or by mineralization. The study of such trace fossils is ichnology - the work of ichnologists. Trace fossils may consist of physical impressions made on or in the substrate by an organism. For example, burrows, borings ( bioerosion), urolites (erosion caused by evacuation of liquid wastes), footprints, feeding marks, and root cavities may all be trace fossils. The term in its broadest sense also includes the remains of other organic material produced by an organism; for example coprolites (fossilized droppings) or chemical markers (sedimentological structures produced by biological means; for example, the formation of stromatolites). However, most sedimentary struct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siltstones
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension (chemistry), suspension with water. Silt usually .... It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility (geology), fissility. Although its permeability and porosity is relatively low, siltstone is sometimes a tight gas reservoir rock, an Unconventional (oil & gas) reservoir, unconventional reservoir for natural gas that requires hydraulic fracturing for economic gas production. Siltstone was prized in ancient Egypt for manufacturing statuary and cosmetic palettes. The siltstone quarried at Wadi Hammamat was a hard, fine-grained siltstone that resisted flaking and was almost ideal for such uses. Description Ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from ''shale'' by its lack of fissility.Blatt, H., and R.J. Tracy, 1996, ''Petrology.'' New York, New York, W. H. Freeman, 2nd ed, 529 pp. The term ''mudstone'' is also used to describe carbonate rocks (limestone or dolomite) that are composed predominantly of carbonate mud. However, in most contexts, the term refers to siliciclastic mudstone, composed mostly of silicate minerals. The NASA Curiosity rover has found deposits of mudstone on Mars that contain organic substances such as propane, benzene and toluene. Definition There is not a single definition of mudstone that has gained general acceptance,Boggs 2006, p.143 though there is wide agreement that mudstones are fine-grained sedimentary rocks, composed mostly of silicate grains with a grain size less than . Individual grains this size are too small to be distinguished without a micros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wulff Land Formation
Wulff is a German family surname and may refer to: People * Anna Wulff (1874–1935), Danish educator *Christian Wulff (born 1959), German politician, former president of Germany * Bettina Wulff (born 1973), wife of Christian *Erwin Neutzsky-Wulff (born 1949), Danish philosopher and author *Evgenii Wulff (1885–1941), Russian botanist *George Wulff (1863–1925), Russian cristallographe *Kai Wulff (fl. 1980–2001), German-born American actor * Marte Wulff, Norwegian singer and songwriter * Mikaela Wulff (born 1990), Finnish competitive sailor *Lee Wulff (1905–1991), American sportsman *Wilhelm Wulff, Nazi occult astrologer Science * Wulffite, an alkali copper sulfate mineral with the chemical formula K3 Na Cu4 O2( S O4)4 * Wulff net, special graph paper designed to read stereographic projections Other uses * Wulff (comics), a fictional mutant character in the Marvel 2099 setting *'' Wulffmorgenthaler'', a webcomic and newspaper comic strip See also *Wolff, a surname *Wulf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Navigation Chart A-5, 3rd Edition
An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." For example, an operational definition of "fear" (the construct) often includes measurable physiologic responses that occur in response to a perceived threat. Thus, "fear" might be operationally defined as specified changes in heart rate, electrodermal activity, pupil dilation, and blood pressure. Overview An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct. Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research. Operational definitions are also used to define system states in terms of a specific, publicly accessible process of preparation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permin Land
The Permin is a bay in the Saaler Bodden lagoon south of Wustrow in northeast Germany. Originally, the Permin was a channel between the Saaler Bodden and the Baltic Sea and the southern estuarine channel of the River Recknitz. It borders on the Fischland in the south.''Seehäfen'' at fischland-darss-zingst.net. Retrieved 7 January 2022. Because the Permin was navigable in the 13th and 14th centuries with average water depths of around 2 to 3 metres, it formed an important waterway for trade to and from the towns of and Barth, although its navigability was frequently deg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryder Glacier (Greenland)
Ryder Glacier (), is one of the major glaciers in northern Greenland. This glacier was first mapped by Lauge Koch in 1917 during Knud Rasmussen's 1916-1918 Second Thule Expedition to north Greenland and was named after Danish Arctic explorer Carl Ryder. Geography The Ryder Glacier originates in the Greenland Ice Cap. It is roughly north–south oriented and has its terminus at the head of the Sherard Osborn Fjord between Permin Land and Warming Land. It is 30 km long and is a floating tongue within the fjord. BibliographyAnthony K. Higgins, ''North Greenland Glacier Velocities and Calf Ice Production'' See also *List of glaciers in Greenland This is a list of glaciers in Greenland. Details on the size and flow of some of the major Greenlandic glaciers are listed by Eric Rignot and Pannir Kanagaratnam (2006) Ice sheets and caps *Greenland Ice Sheet *Ad Astra Ice Cap (Greenland), ... References External linksA Mini-Surge on the Ryder Glacier, Greenland, Obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aage Bistrup Land
Aage is a Danish masculine given name and a less common spelling of the Norwegian given name Åge. Variants include the Swedish name Åke. People with the name Aage include: First name * Count Aage of Rosenborg (1887–1940), Danish prince and officer of the French Foreign Legion *Aage Bendixen (1887–1973), Danish actor *Aage Berntsen (1885–1952), Danish Olympic fencer, doctor writer and artist *Aage Bertelsen (1873–1945), Danish painter *Aage Birch (1926–2017), Danish sailor *Aage Bohr (1922–2009), Danish nuclear physicist and Nobel laureate, son of Niels Bohr * Aage Borchgrevink (born 1969), Norwegian writer and literary critic * Aage Brix (1894–1963), American soccer player * Aage Dons (1903–1993), Danish writer *Aage Emborg (1883–1953), Danish composer *Aage Eriksen (1917–1998), Norwegian wrestler and Olympic medallist in Greco-Roman wrestling *Aage Fønss (1887–1976), Danish opera singer and actor * Aage Fahrenholtz (1901–1990), Danish boxer *Aage Foss ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GoogleEarth
Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satellite images, aerial photography, and geographic information system, GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a Computer keyboard, keyboard or computer mouse, mouse. The program can also be downloaded on a smartphone or Tablet computer, tablet, using a touch screen or stylus to navigate. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the Earth and is also a Web Map Service client. In 2019, Google revealed that Google Earth covers more than 97 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
