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Zachariae Isstrom
Zachariae Isstrom ( da, Zachariae Isstrøm; Isstrøm being the Danish word for ice stream) is a large glacier located in King Frederick VIII Land, northeast Greenland. This glacier was named by the Denmark expedition 1906–08 after Georg Hugh Robert Zachariae (1850–1937), an officer of the Danish Navy. Geography It drains an area of of the Greenland Ice Sheet with a flux (quantity of ice moved from the land to the sea) of per year, as calculated for 1996, increasing to in 2015. The glacier holds a 0.5-meter sea-level rise equivalent. Zachariae Isstrøm has its terminus in the northern part of Jokel Bay, south of Lambert Land and north of Nørreland, near the Achton Friis Islands. It terminates into an embayment previously packed with multi-year calf ice. Glacier retreat Zachariae Isstrøm broke loose from a stable position in 2012 and entered a phase of accelerated retreat as predicted in 2008. From a state of approximate mass balance until 2003 it is now losing mass at a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piedmont Glacier
Glacier morphology, or the form a glacier takes, is influenced by temperature, precipitation, topography, and other factors. The goal of glacial morphology is to gain a better understanding of glaciated landscapes and the way they are shaped. Types of glaciers can range from massive ice sheets, such as the Greenland ice sheet, to small cirque glaciers found perched on mountain tops. Glaciers can be grouped into two main categories: * Ice flow is constrained by the underlying bedrock topography * Ice flow is unrestricted by surrounding topography Unconstrained Glaciers Ice sheets and ice caps Ice sheets and ice caps cover the largest areas of land in comparison to other glaciers, and their ice is unconstrained by the underlying topography. They are the largest glacial ice formations and hold the vast majority of the world's fresh water. Ice sheets Ice sheets are the largest form of glacial formation. They are continent sized ice masses that span areas over . They are dome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danish Navy
The Royal Danish Navy ( da, Søværnet) is the sea-based branch of the Danish Defence force. The RDN is mainly responsible for maritime defence and maintaining the sovereignty of Danish territorial waters (incl. Faroe Islands and Greenland). Other tasks include surveillance, search and rescue, icebreaking, oil spill recovery and prevention as well as contributions to international tasks and forces. During the period 1509–1814, when Denmark was in a union with Norway, the Danish Navy was part of the Dano-Norwegian Navy. Until the copenhagenization of the navy in 1801, and again in 1807, the navy was a major strategic influence in the European geographical area, but since then its size and influence has drastically declined with a change in government policy. Despite this, the navy is now equipped with a number of large state-of-the-art vessels commissioned since the end of the Cold War. This can be explained by its strategic location as the NATO member controlling access t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Calving
Ice calving, also known as glacier calving or iceberg calving, is the breaking of ice chunks from the edge of a glacier.Essentials of Geology, 3rd edition, Stephen Marshak It is a form of ice ablation or ice disruption. It is the sudden release and breaking away of a mass of ice from a glacier, iceberg, ice front, ice shelf, or crevasse. The ice that breaks away can be classified as an iceberg, but may also be a growler, bergy bit, or a crevasse wall breakaway.Glossary of Glacier Terms Ellin Beltz, 2006. Retrieved July 2009. Calving of glaciers is often accompanied by a loud cracking or booming sound before blocks of ice up to high break loose and crash into the water. The entry of the ice into the water causes large, and often hazardous waves. The waves formed in locations like |
Achton Friis Islands
The Achton Friis Islands ( da, Achton Friis Øer) are a group of two uninhabited islands in the Greenland Sea, Greenland. They were named by the Denmark expedition in honor of illustrator Achton Friis, one of the expedition members. Geography The Achton Friis Islands lie northeast of Jokel Bay, northeastern Greenland. They are located east of the terminus of the Zachariae Isstrom glacier, south of Cape Drygalsky, off the southeastern coast of Lambert Land and north of Schnauder Island ; to the southwest of the Norske Islands and northwest of the Franske Islands. There are two islands in the group, the main island and a smaller island off its northernmost headland, separated from it by a narrow sound. See also *List of islands of Greenland The following is an alphabetical list of the islands of Greenland. Many of these islands have both a Kalaallisut language name and a European language name. Islands and archipelagoes * Aaluik * Aasiaat Archipelago * Achton Friis Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambert Land
Lambert Land is a land area —possibly a peninsula or an island— in King Frederick VIII Land, northeastern Greenland. Administratively it belongs to the NE Greenland National Park area. Geography Lambert Land is bounded in the north by the Nioghalvfjerd Fjord, in the east by the Greenland Sea and in the south by the Zachariae Isstrom, beyond which rises Duke of Orleans Land. Jomfru Tidsfordriv Fjord is a small fjord in the eastern coast. Cape Drygalsky is its eastern headland. To the northeast lie the Gamle Jim Islands and to the southeast Jokel Bay. Lambert Land is largely unglaciated. History Lambert Land was named by the 1906-1908 Denmark expedition after a name found in a 1718 map of an obscure Dutch whaler who had sighted that land in 1670.''Catalogue of place names in northern East Greenland'', Geological Survey of Denmark (GEUS) Jørgen Brønlund, the last survivor of the ill-fated leading team of the Denmark expedition reached Lambert Land in the moonlight an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'', also widely referred to as ''Science Magazine'', is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flux
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. Flux is a concept in applied mathematics and vector calculus which has many applications to physics. For transport phenomena, flux is a vector quantity, describing the magnitude and direction of the flow of a substance or property. In vector calculus flux is a scalar quantity, defined as the surface integral of the perpendicular component of a vector field over a surface. Terminology The word ''flux'' comes from Latin: ''fluxus'' means "flow", and ''fluere'' is "to flow". As ''fluxion'', this term was introduced into differential calculus by Isaac Newton. The concept of heat flux was a key contribution of Joseph Fourier, in the analysis of heat transfer phenomena. His seminal treatise ''Théorie analytique de la chaleur'' (''The Analytical Theory of Heat''), defines ''fluxion'' as a central quantity and proceeds to derive the now well-known express ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland Ice Sheet
The Greenland ice sheet ( da, Grønlands indlandsis, kl, Sermersuaq) is a vast body of ice covering , roughly near 80% of the surface of Greenland. It is sometimes referred to as an ice cap, or under the term ''inland ice'', or its Danish equivalent, ''indlandsis''. An acronym, GIS, is frequently used in the scientific literature. It is the second largest ice body in the world, after the Antarctic ice sheet. The ice sheet is almost long in a north–south direction, and its greatest width is at a latitude of 77°N, near its northern margin. The average thickness is about and over at its thickest point. In addition to the large ice sheet, smaller ice caps (such as Maniitsoq and Flade Isblink) as well as glaciers, cover between around the periphery. The Greenland ice sheet is adversely affected by climate change. It is more vulnerable to climate change than the Antarctic ice sheet because of its position in the Arctic, where it is subject to the regional amplification o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Hugh Robert Zachariae
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Georg may refer to: * ''Georg'' (film), 1997 *Georg (musical), Estonian musical * Georg (given name) * Georg (surname) * , a Kriegsmarine coastal tanker See also * George (other) George may refer to: People * George (given name) * George (surname) * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Washington, First President of the United States * George W. Bush, 43rd President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland
Greenland ( kl, Kalaallit Nunaat, ; da, Grønland, ) is an island country in North America that is part of the Kingdom of Denmark. It is located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland is the world's largest island. It is one of three constituent countries that form the Kingdom of Denmark, along with Denmark and the Faroe Islands; the citizens of these countries are all citizens of Denmark and the European Union. Greenland's capital is Nuuk. Though a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers) for more than a millennium, beginning in 986.The Fate of Greenland's Vikings , by Dale Mackenzie Brown, ''Archaeological Institute of America'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denmark Expedition
The Denmark expedition ( da, Danmark-ekspeditionen), also known as the Denmark Expedition to Greenland's Northeast Coast, and as the Danmark Expedition after the ship, was an expedition to the northeast of Greenland in 1906–1908. Despite being overshadowed by the death in tragic circumstances of the main exploration team, including three of the expedition's leading members: Ludvig Mylius-Erichsen (1872–1907), Niels Peter Høeg Hagen (1877–1907) and Jørgen Brønlund (1877–1907), the Denmark expedition was not a failure. It achieved its main cartographic objectives and succeeded in exploring the vast region, drawing accurate charts of formerly unexplored coastlines and fjords, naming numerous geographic features, and gathering a wealth of scientific data. Purposes The two-year expedition was conceived and led by Ludvig Mylius-Erichsen, who had previously led the 'Literary Expedition' to Northwest Greenland together with Knud Rasmussen in 1902–1904. The main target of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
