Portal:Geography
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Physical map of Earth
Geography (from Greek: γεωγραφία, geographia, literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of the Earth and planets. The first person to use the word γεωγραφία was Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be.
Geography is often defined in terms of two branches: human geography and physical geography. Human geography is concerned with the study of people and their communities, cultures, economies, and interactions with the environment by studying their relations with and across space and place. Physical geography is concerned with the study of processes and patterns in the natural environment like the atmosphere, hydrosphere, biosphere, and geosphere.
The four historical traditions in geographical research are spatial analyses of natural and the human phenomena, area studies of places and regions, studies of human-land relationships, and the Earth sciences. Geography has been called "the world discipline" and "the bridge between the human and the physical sciences". (Full article...)
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Harry Glicken (March 7, 1958 – June 3, 1991) was an American volcanologist. He researched Mount St. Helens in the United States before and after its 1980 eruption, and was very distraught about the death of fellow volcanologist David A. Johnston, who had switched shifts with Glicken so that the latter could attend an interview. In 1991, while conducting avalanche research on Mount Unzen in Japan, Glicken and fellow volcanologists Katia and Maurice Krafft were killed by a pyroclastic flow. His remains were found four days later, and were cremated in accordance with his parents' request. Glicken and Johnston remain the only American volcanologists known to have died in volcanic eruptions.
Despite a long-term interest in working for the United States Geological Survey, Glicken never received a permanent post there because employees found him eccentric. Conducting independent research from sponsorships granted by the National Science Foundation and other organizations, Glicken accrued expertise in the field of volcanic debris avalanches. He also wrote several major publications on the topic, including his doctoral dissertation based on his research at St. Helens titled "Rockslide-debris Avalanche of May 18, 1980, Mount St. Helens Volcano, Washington" that initiated widespread interest in the phenomenon. Since being published posthumously by Glicken's colleagues in 1996, the report has been acknowledged by many other publications on debris avalanches. Following his death, Glicken was praised by associates for his love of volcanoes and commitment to his field. (Full article...)
The Capon Lake Whipple Truss Bridge (locally /ˈkeɪpən/), formerly known as South Branch Bridge or Romney Bridge, is a historic Whipple truss bridge in Capon Lake, West Virginia. It is located off Carpers Pike (West Virginia Route 259) and crosses the Cacapon River. The bridge formerly carried Capon Springs Road (County Route 16) over the river, connecting Capon Springs and Capon Lake.
The bridge's Whipple truss technology was developed by civil engineer Squire Whipple in 1847. J. W. Murphy further modified Whipple's truss design in 1859 by designing the first truss bridge with pinned eyebar connections. The design of the Capon Lake Whipple Truss Bridge incorporates Murphy's later modifications with double-intersections and horizontal chords, and is therefore considered a Whipple–Murphy truss bridge. The Capon Lake Whipple Truss Bridge is West Virginia's oldest remaining example of a Whipple truss bridge and its oldest extant metal truss bridge. (Full article...)
The 2007–2008 Nazko earthquakes were a series of small volcanic earthquakes measuring less than 4.0 on the Richter magnitude scale. They took place in the sparsely populated Nazko area of the Central Interior of British Columbia, Canada starting on October 9, 2007 and ending on June 12, 2008. They occurred just west of Nazko Cone, a small tree-covered cinder cone that last erupted about 7,200 years ago.
No damage or casualties resulted from the Nazko earthquakes, which were too small to be felt by people, but local seismographs recorded them. The earthquake swarm occurred at the eastern end of a known volcanic zone called the Anahim Volcanic Belt. This is an east-west trending line of volcanic formations extending from the Central Coast to the Central Interior of British Columbia. (Full article...)
Bristol (/ˈbrɪstəl/ (
listen)) is a city, ceremonial county and unitary authority in England. With a population of 463,400, it is the most populous city in South West England. The wider Bristol Built-Up Area has the 10th-largest population in England. The urban area population of 670,000 is the 11th-largest in the United Kingdom. The city lies between Gloucestershire to the north and Somerset to the south. South Wales lies across the Severn estuary.
Iron Age hill forts and Roman villas were built near the confluence of the rivers Frome and Avon, and around the beginning of the 11th century, the settlement was known as Brycgstow (Old English "the place at the bridge"). Bristol received a royal charter in 1155 and was historically divided between Gloucestershire and Somerset until 1373 when it became a county of itself. From the 13th to the 18th century, Bristol was among the top three English cities, after London, in tax receipts; however, it was surpassed by the rapid rise of Birmingham, Manchester and Liverpool in the Industrial Revolution. (Full article...)
Craters of the Moon National Monument and Preserve is a U.S. national monument and national preserve in the Snake River Plain in central Idaho. It is along US 20 (concurrent with US 93 and US 26), between the small towns of Arco and Carey, at an average elevation of 5,900 feet (1,800 m) above sea level. The protected area's features are volcanic and represent one of the best-preserved flood basalt areas in the continental United States.
The Monument was established on May 2, 1924. In November 2000, a presidential proclamation by President Clinton greatly expanded the Monument area. The 410,000-acre National Park Service portions of the expanded Monument were designated as Craters of the Moon National Preserve in August 2002. It spreads across Blaine, Butte, Lincoln, Minidoka, and Power counties. The area is managed cooperatively by the National Park Service and the Bureau of Land Management (BLM). (Full article...)
Willow Lake (located in the Big Butte Creek watershed), with Mount McLoughlin in the background
Big Butte Creek is a 12-mile-long (19 km) tributary of the Rogue River in the U.S. state of Oregon. It drains approximately 245 square miles (635 km2) of Jackson County. Its two forks, the North Fork and the South Fork, both begin high in the Cascade Range near Mount McLoughlin. Flowing predominantly west, they meet near the city of Butte Falls. The main stem flows generally northwest until it empties into the Rogue Falls was incorporated in 1911, and remains the only incorporated town within the watershed's boundaries.
Big Butte Creek's watershed was originally settled over 8,000 years ago by the Klamath, Upper Umpqua, and Takelma tribes of Native Americans. In the Rogue River Wars of the 1850s, most of the Native Americans were either killed or forced onto Indian reservations. The first non-indigenous settlers arrived in the 1860s, naming the creek after Snowy Butte, an early name for Mount McLoughlin. In the late 19th century, the watershed was primarily used for agriculture and logging. The small city of Butte Falls was incorporated in 1911, and remains the only incorporated town within the watershed's boundaries. (Full article...)
Laguna del Maule is a volcanic field in the Andes mountain range of Chile, close to, and partly overlapping, the Argentina–Chile border. The bulk of the volcanic field is in the Talca Province of Chile's Maule Region. It is a segment of the Southern Volcanic Zone, part of the Andean Volcanic Belt. The volcanic field covers an area of 500 km2 (190 sq mi) and features at least 130 volcanic vents. Volcanic activity has generated cones, lava domes, lava coulees and lava flows, which surround the Laguna del Maule lake. The field gets its name from the lake, which is also the source of the Maule River.
The field's volcanic activity began 1.5 million years ago during the Pleistocene era; such activity has continued into the postglacial and Holocene era after glaciers retreated from the area. Postglacial volcanic activity has included eruptions with simultaneous explosive and effusive components, as well as eruptions with only one component. In the postglacial era, volcanic activity has increased at Laguna del Maule, with the volcanic field rapidly inflating during the Holocene. Three major caldera-forming eruptions took place in the volcanic field prior to the last glacial period. The most recent eruptions in the volcanic field took place 2,500 ± 700, 1,400 ± 600 and 800 ± 600 years ago and generated lava flows; today geothermal phenomena occur at Laguna del Maule. Volcanic rocks in the field include basalt, andesite, dacite and rhyolite; the latter along with rhyodacite makes up most of the Holocene rocks. In pre-Columbian times, the field was a regionally important source of obsidian. (Full article...)
The empire during the reign of Gaozong, c. 669
The Tang dynasty (/tɑːŋ/, [tʰǎŋ]; Chinese: 唐朝), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period. Historians generally regard the Tang as a high point in Chinese civilization, and a golden age of cosmopolitan culture. Tang territory, acquired through the military campaigns of its early rulers, rivaled that of the Han dynasty.
The Lǐ family (李) founded the dynasty, seizing power during the decline and collapse of the Sui Empire and inaugurating a period of progress and stability in the first half of the dynasty's rule. The dynasty was formally interrupted during 690–705 when Empress Wu Zetian seized the throne, proclaiming the Wu Zhou dynasty and becoming the only legitimate Chinese empress regnant. The devastating An Lushan Rebellion (755–763) shook the nation and led to the decline of central authority in the dynasty's latter half. Like the previous Sui dynasty, the Tang maintained a civil-service system by recruiting scholar-officials through standardized examinations and recommendations to office. The rise of regional military governors known as jiedushi during the 9th century undermined this civil order. The dynasty and central government went into decline by the latter half of the 9th century; agrarian rebellions resulted in mass population loss and displacement, widespread poverty, and further government dysfunction that ultimately ended the dynasty in 907. (Full article...)
Volubilis (Latin pronunciation: [woˈlu.bi.lis]; Arabic: وليلي, romanized: walīlī; Berber languages: ⵡⵍⵉⵍⵉ, romanized: wlili) is a partly excavated Berber city in Morocco situated near the city of Meknes, and commonly considered as the ancient capital of the kingdom of Mauretania. Built in a fertile agricultural area, it developed from the 3rd century BC onward as a Berber, then proto-Carthaginian, settlement before being the capital of the kingdom of Mauretania. It grew rapidly under Roman rule from the 1st century AD onward and expanded to cover about 42 hectares (100 acres) with a 2.6 km (1.6 mi) circuit of walls. The city gained a number of major public buildings in the 2nd century, including a basilica, temple and triumphal arch. Its prosperity, which was derived principally from olive growing, prompted the construction of many fine town-houses with large mosaic floors.
The city fell to local tribes around 285 and was never retaken by Rome because of its remoteness and indefensibility on the south-western border of the Roman Empire. It continued to be inhabited for at least another 700 years, first as a Latinised Christian community, then as an early Islamic settlement. In the late 8th century it became the seat of Idris ibn Abdallah, the founder of the Idrisid dynasty of Morocco. By the 11th century Volubilis had been abandoned after the seat of power was relocated to Fes. Much of the local population was transferred to the new town of Moulay Idriss Zerhoun, about 5 km (3.1 mi) from Volubilis. (Full article...)
The Australasian Antarctic Expedition was a 1911–1914 expedition headed by Douglas Mawson that explored the largely uncharted Antarctic coast due south of Australia. Mawson had been inspired to lead his own venture by his experiences on Ernest Shackleton's Nimrod expedition in 1907–1909. During its time in Antarctica, the expedition's sledging parties covered around 4,180 kilometres (2,600 mi) of unexplored territory, while its ship, SY Aurora, navigated 2,900 kilometres (1,800 mi) of unmapped coastline. Scientific activities included meteorological measurements, magnetic observations, an expansive oceanographic program, and the collection of many biological and geological samples, including the discovery of the first meteorite found in Antarctica. The expedition was the first to establish and maintain wireless contact between Antarctica and Australia. Another planned innovation – the use of an aircraft – was thwarted by an accident before the expedition sailed. The plane's fuselage was adapted to form a motorised sledge or "air-tractor", but it proved to be of very limited use.
The expedition was organised into three bases: one on the sub-Antarctic Macquarie Island and two on the Antarctic mainland. The main base, under Mawson's command, was set up at Cape Denison, about 480 kilometres (300 mi) west of Cape Adare, and a western base under Frank Wild was established on the Shackleton Ice Shelf, more than 2,410 kilometres (1,500 mi) west of Cape Denison. Activities at both mainland bases were hampered by extreme winds, which often made outside work impossible. (Full article...)
Grand Teton National Park is an American national park in northwestern Wyoming. At approximately 310,000 acres (480 sq mi; 130,000 ha; 1,300 km2), the park includes the major peaks of the 40-mile-long (64 km) Teton Range as well as most of the northern sections of the valley known as Jackson Hole. Grand Teton National Park is only 10 miles (16 km) south of Yellowstone National Park, to which it is connected by the National Park Service–managed John D. Rockefeller Jr. Memorial Parkway. Along with surrounding national forests, these three protected areas constitute the almost 18,000,000-acre (7,300,000 ha) Greater Yellowstone Ecosystem, one of the world's largest intact mid-latitude temperate ecosystems.
The human history of the Grand Teton region dates back at least 11,000 years, when the first nomadic hunter-gatherer Paleo-Indians began migrating into the region during warmer months pursuing food and supplies. In the early 19th century, the first white explorers encountered the eastern Shoshone natives. Between 1810 and 1840, the region attracted fur trading companies that vied for control of the lucrative beaver pelt trade. U.S. Government expeditions to the region commenced in the mid-19th century as an offshoot of exploration in Yellowstone, with the first permanent white settlers in Jackson Hole arriving in the 1880s. (Full article...)
The German Empire from 1871–1918
The Unification of Germany into the German Empire, a Prussia-dominated nation state with federal features, officially occurred on 18 January 1871 at the Versailles Palace's Hall of Mirrors in France. Princes of the German states gathered there to proclaim King Wilhelm I of Prussia as Emperor of the German Empire during the Franco-Prussian War.
A confederated realm of German princedoms had been in existence for over a thousand years, dating to the Treaty of Verdun in 843. However, there was no German national identity in development as late as 1800, mainly due to the autonomous nature of the princely states; most inhabitants of the Holy Roman Empire, outside of those ruled by the emperor directly, identified themselves mainly with their prince, and not with the Empire as a whole. This became known as the "practice of kleinstaaterei", or "practice of small-statery". By the 19th century, transportation and communications improvements brought these regions closer together. The Empire was dissolved in 1806 with the abdication of Emperor Francis II during the Napoleonic Wars. Despite the legal, administrative, and political disruption caused by the dissolution, the German-speaking people of the old Empire had a common linguistic, cultural and legal tradition. European liberalism offered an intellectual basis for unification by challenging dynastic and absolutist models of social and political organization; its German manifestation emphasized the importance of tradition, education, and linguistic unity. Economically, the creation of the Prussian Zollverein (customs union) in 1818, and its subsequent expansion to include other states of the German Confederation, reduced competition between and within states. Emerging modes of transportation facilitated business and recreational travel, leading to contact and sometimes conflict between and among German-speakers from throughout Central Europe. (Full article...)
Chad (/tʃæd/ (listen); Arabic: تشاد Tšād, Arabic pronunciation: [tʃaːd]; French: Tchad, pronounced [tʃa(d)]), officially known as the Republic of Chad (Arabic: جمهورية تْشَاد Jumhūriyyat Tšād; French: République du Tchad), is a landlocked country in north-central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon to the south-west, Nigeria to the southwest (at Lake Chad), and Niger to the west. It has a population of 16 million, of which 1.6 million live in the capital and largest city N'Djamena.
Chad has several regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanian Savanna zone in the south. Lake Chad, after which the country is named, is the second-largest wetland in Africa. Chad's official languages are Arabic and French. It is home to over 200 different ethnic and linguistic groups. Islam (51.8%) and Christianity (44.1%) are the main religions practiced in Chad. (Full article...)
Colton Point State Park is a 368-acre (149 ha) Pennsylvania state park in Tioga County, Pennsylvania, in the United States. It is on the west side of the Pine Creek Gorge, also known as the Grand Canyon of Pennsylvania, which is 800 feet (240 m) deep and nearly 4,000 feet (1,200 m) across at this location. The park extends from the creek in the bottom of the gorge up to the rim and across part of the plateau to the west. Colton Point State Park is known for its views of the Pine Creek Gorge, and offers opportunities for picnicking, hiking, fishing and hunting, whitewater boating, and camping. Colton Point is surrounded by Tioga State Forest and its sister park, Leonard Harrison State Park, on the east rim. The park is on a state forest road in Shippen Township 5 miles (8 km) south of U.S. Route 6.
Pine Creek flows through the park and has carved the gorge through five major rock formations from the Devonian and Carboniferous periods. Native Americans once used the Pine Creek Path along the creek. The path was later used by lumbermen, and then became the course of a railroad from 1883 to 1988. Since 1996, the 62-mile (100 km) Pine Creek Rail Trail has followed the creek through the gorge. The Pine Creek Gorge was named a National Natural Landmark in 1968 and is also protected as a Pennsylvania State Natural Area and Important Bird Area, while Pine Creek is a Pennsylvania Scenic and Wild River. The gorge is home to many species of plants and animals, some of which have been reintroduced to the area. (Full article...)
Cerro Azul (Spanish pronunciation: [ˈsero aˈsul], blue hill in Spanish), sometimes referred to as Quizapu, is an active stratovolcano in the Maule Region of central Chile, immediately south of Descabezado Grande. Part of the South Volcanic Zone of the Andes, its summit is 3,788 meters (12,428 ft) above sea level, and is capped by a summit crater that is 500 meters (1,600 ft) wide and opens to the north. Beneath the summit, the volcano features numerous scoria cones and flank vents.
Cerro Azul is responsible for several of South America's largest recorded eruptions, in 1846 and 1932. In 1846, an effusive eruption formed the vent at the site of present-day Quizapu crater on the northern flank of Cerro Azul and sent lava flowing down the sides of the volcano, creating a lava field 8–9 square kilometres (3–3.5 square miles) in area. Phreatic and Strombolian volcanism between 1907 and 1932 excavated this crater. In 1932, one of the largest explosive eruptions of the 20th century occurred at Quizapu Crater and sent 9.5 cubic kilometers (2.3 cu mi) of ash into the atmosphere. The volcano's most recent eruption was in 1967. (Full article...)
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In this month
- 3 August 1958 – First naval vessel to reach the North Pole, the USS Nautilus
- 13 August 1935 – Formation of the Geographic Institute Agustín Codazzi
- 13 August 1894 – Incorporation of Morrison, Oklahoma
- 30 August 1844 – Birth of Friedrich Ratzel (pictured), German geographer and ethnographer
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Vital article
Vital articles to understand Geography.
Asia (/ˈeɪʒə, ˈeɪʃə/ (
.svg)
listen)) is Earth's largest and most populous continent, located primarily in the Eastern and Northern Hemispheres. It shares the continental landmass of Eurasia with the continent of Europe and the continental landmass of Afro-Eurasia with both Europe and Africa. Asia covers an area of 44,579,000 square kilometres (17,212,000 sq mi), about 30% of Earth's total land area and 8.7% of the Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.5 billion people () constitute roughly 60% of the world's population. (Full article...)Other vital articles
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Selected pictures
Map: Strebe, using GeocartThe van der Grinten projection is a compromise map projection that is neither equal-area nor conformal. It projects the entire Earth into a circle, though the polar regions are subject to extreme distortion. The projection was the first of four proposed by Alphons J. van der Grinten in 1904, and, unlike perspective projections, is an arbitrary geometric construction on the plane. It was adopted as the National Geographic Society's reference map of the world from 1922 until 1988.
Map credit: Robert WilkinsonAn 18th century map of the Iberian Peninsula illustrating various topographic features of the land. The Iberian Peninsula, or Iberia, is located in the extreme southwest of Europe, and includes modern day Spain, Portugal, Gibraltar and Andorra.
Photograph: Maull & Fox; restoration: Adam CuerdenFanny Bullock Workman (1859–1925) was an American geographer, cartographer, explorer, travel writer, and mountaineer. Together with her husband, William Hunter Workman, she traveled by bicycle through Switzerland, France, Italy, Spain, Algeria and India; after taking up climbing in the Himalayas, she set a women's altitude record on Pinnacle Peak, reaching 23,000 feet (7,000 m). She published eight travel books, with particular focus on the lives of women in the countries she visited, and championed women's rights and women's suffrage.
Map credit: Lencer and NordNordWestA general map, showing the geography of Germany, the seventh largest country in Europe and the second most populous. Located in Central Europe, Germany is second only to Russia in the number of borders it shares with other European countries (9).
A satellite image of the Sahara, the world's largest hot desert and second largest desert after Antarctica at over 9,000,000 km² (3,500,000 mi²), almost as large as the United States. The Sahara is located in Northern Africa and is 2.5 million years old.
Map: Strebe, using GeocartThe Aitoff projection is a modified azimuthal map projection first proposed by David A. Aitoff in 1889. Based on the equatorial form of the azimuthal equidistant projection, Aitoff halved longitudes from the central meridian, projected by the azimuthal equidistant, and then stretched the result horizontally into a 2:1 ellipse.
Photo: NASAA composite satellite image of the geography of Africa, the Earth's second-largest continent, and its adjacent islands. Separated from Europe by the Mediterranean Sea and from much of Asia by the Red Sea, Africa is joined to Asia at its northeast extremity by the Isthmus of Suez. For geopolitical purposes, the Sinai Peninsula – east of the Suez Canal – is often considered part of Africa, although geographically it belongs in Asia. Africa can be divided into a number of geographic zones: The Atlas Mountains in the north, the Sahara, the coastal plains, and the inner plateaus.
Map: Jorge de AguiarA portolan chart from 1492, the oldest known signed and dated chart of Portuguese origin. Cartography technologies greatly advanced during the Age of Discovery. Iberian mapmakers in particular focused on practical charts to use as navigational aids. Unlike Spanish maps which were regarded as state secrets, Portuguese ones were used by other countries, and Portuguese cartographers drew upon the skill and knowledge of other cultures as well.
Map credit: Abraham CresquesThe Catalan Atlas is a medieval map in the Catalan language, created in 1375. Described as "the zenith of medieval map-work", it is the earliest known chart to use a compass rose. It was produced by the Majorcan cartographic school and is attributed to Abraham Cresques, a Jewish book illuminator described by a contemporary as a master of mappae mundi. It has been in the royal library of France (now the Bibliothèque nationale de France) since the time of King Charles V. The atlas originally consisted of six vellum leaves, each about 64.5 by 50 cm (25.4 by 19.7 in), folded vertically and painted in various colours including gold and silver. This picture is a montage of eight pages (four leaves) of the atlas, depicting Europe, northern Africa and Asia.
Map: Strebe, using GeocartThe Craig retroazimuthal is a modified cylindrical map projection created by James Ireland Craig in 1909. It preserves the direction from any place to one other, predetermined place while avoiding some of the distortion of the Hammer retroazimuthal projection. This projection is sometimes known as the Mecca projection because Craig, who had worked in Egypt as a cartographer, created it to help Muslims find the qibla.
Photo credit: NASAAntarctica, the continent surrounding the Earth's South Pole, is the coldest place on earth and is almost entirely covered by ice. Antarctica was discovered in late January 1820. Too cold and dry to support virtually any vascular plants, Antartica's flora presently consists of around 250 lichens, 100 mosses, 25-30 liverworts, and around 700 terrestrial and aquatic algal species.
Map credit: Heinrich C. BerannYellowstone National Park is an American national park located mostly in Wyoming and extending into Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872. Yellowstone was the first national park in the U.S. and is also widely held to be the first national park in the world. The park is known for its wildlife and its many geothermal features, especially the Old Faithful geyser, one of its most popular landmarks. It has many types of ecosystems, but the subalpine forest is the most abundant. The park is part of the South Central Rockies forests ecoregion. In 1978, Yellowstone was named a World Heritage Site by UNESCO.
This picture is a stylized panoramic map of Yellowstone National Park as viewed from the northeast, created in 1991 by Austrian painter and cartographer Heinrich C. Berann for the National Park Service. Yellowstone Lake and the Grand Canyon of the Yellowstone are in the center, while Old Faithful is visible on the right, next to a brown building representing the Old Faithful Inn. Jackson Lake and the peaks of the Teton Range are depicted in the background.
Map: Diego Gutiérrez and Hieronymus CockAmericae Sive Quartae Orbis Partis Nova Et Exactissima Descriptio is an ornate geographical map of the Americas made in 1562 by Spanish cartographer Diego Gutiérrez and Flemish artist Hieronymus Cock. The map encompasses the eastern coast of North America, the whole of Central and South America, and parts of the western coasts of Europe and Africa. This is the earliest scale wall map of the New World and the first to use the name "California". Two extant copies are known.
Illustration credit: Joaquim Alves Gaspar, after Jorge de AguiarA compass rose, sometimes called a windrose or rose of the winds, is a figure on a compass, map, nautical chart, or monument used to display the orientation of the cardinal directions (north, east, south, and west) and their intermediate points. It is also the term for the graduated markings found on the traditional magnetic compass. Today, a form of compass rose is found on, or featured in, almost all navigation systems, including nautical charts, non-directional beacons, VHF omnidirectional range systems, GPS, and similar equipment.
This picture is an illustration of a compass rose, copied from a 1492 portolan chart by Portuguese navigator and cartographer Jorge de Aguiar, now in the Beinecke Rare Book & Manuscript Library.
Map: Strebe, using GeocartThe Littrow projection, created by Joseph Johann Littrow in 1838, is a conformal retroazimuthal map projection. It allows direct measurement of the azimuth from any point on the map to the center.
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Featured biography
Featured biography articles in geography
The title page of a 1634 version of Hues' Tractatus de globis in the collection of the Biblioteca Nacional de Portugal
Robert Hues (1553 – 24 May 1632) was an English mathematician and geographer. He attended St. Mary Hall at Oxford, and graduated in 1578. Hues became interested in geography and mathematics, and studied navigation at a school set up by Walter Raleigh. During a trip to Newfoundland, he made observations which caused him to doubt the accepted published values for variations of the compass. Between 1586 and 1588, Hues travelled with Thomas Cavendish on a circumnavigation of the globe, performing astronomical observations and taking the latitudes of places they visited. Beginning in August 1591, Hues and Cavendish again set out on another circumnavigation of the globe. During the voyage, Hues made astronomical observations in the South Atlantic, and continued his observations of the variation of the compass at various latitudes and at the Equator. Cavendish died on the journey in 1592, and Hues returned to England the following year.
In 1594, Hues published his discoveries in the Latin work Tractatus de globis et eorum usu (Treatise on Globes and Their Use) which was written to explain the use of the terrestrial and celestial globes that had been made and published by Emery Molyneux in late 1592 or early 1593, and to encourage English sailors to use practical astronomical navigation. Hues' work subsequently went into at least 12 other printings in Dutch, English, French and Latin. (Full article...)More featured biographies
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Did you know...
Did you know it about Geography?
- ... that the first known paravian dinosaurs were from China, but they now live on every continent?
- ... that during the collision of India with Asia, the southern part of the Tibetan Plateau achieved its high elevation before the northern part?
- ... that the dark and fatalistic humour of Canadian comedians has been attributed to the dangers of Canada's climate and geography?
- ... that although Constance Kies was a nutrition scientist, she majored in English, and minored in history, geography, library science, and home economics?
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Top 10 WikiProject Geography Popular articles of the month
This following Geography-related articles is a most visited articles of WikiProject Geography, See complete list at Wikipedia:WikiProject Geography/Popular pages.
- This article provides a general overview and documents the status of locations affected by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus which causes coronavirus disease 2019 (COVID-19) and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 were identified in Wuhan, the capital of the province of Hubei in China in December 2019. (Full article...)
The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. The 48 contiguous states and Washington, D.C., are in North America between Canada and Mexico, while Alaska is in the far northwestern part of North America and Hawaii is an archipelago in the mid-Pacific. Territories of the United States are scattered throughout the Pacific Ocean and the Caribbean Sea. (Full article...)- Millennials, also known as Generation Y or Gen Y, are the demographic cohort following Generation X and preceding Generation Z. Researchers and popular media use the early 1980s as starting birth years and the mid-1990s to early 2000s as ending birth years, with 1981 to 1996 being a widely accepted defining range for the generation. Most Millennials are the children of baby boomers and early Gen Xers; Millennials are often the parents of Generation Alpha. (Full article...)
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest of England and the Celtic Sea to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain, which lies in the North Atlantic, and includes over 100 smaller islands, such as the Isles of Scilly and the Isle of Wight. (Full article...)- Generation Z (or Gen Z for short), colloquially also known as zoomers, is the demographic cohort succeeding Millennials and preceding Generation Alpha. Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years. Most members of Generation Z are children of Generation X. (Full article...)
- Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It comprises the westernmost peninsulas of the continental landmass of Eurasia, and is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe is commonly considered to be separated from Asia by the watershed of the Ural Mountains, the Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterways of the Turkish Straits. Although much of this border is over land, Europe is generally accorded the status of a full continent because of its great physical size and the weight of its history and traditions. (Full article...)
This is a list of countries and dependencies by population. It includes sovereign states, inhabited dependent territories and, in some cases, constituent countries of sovereign states, with inclusion within the list being primarily based on the ISO standard ISO 3166-1. For instance, the United Kingdom is considered a single entity, while the constituent countries of the Kingdom of the Netherlands are considered separately. In addition, this list includes certain states with limited recognition not found in ISO 3166-1. Also given in percent is each country's population compared with the world population, which the United Nations estimates at 7.89 billion today. (Full article...)
London is the capital and largest city of England and the United Kingdom. The city stands on the River Thames in southeast England, at the head of its 50-mile (80 km) estuary leading to the North Sea. London has been a major settlement for two millennia, and was originally called Londinium, which was founded by the Romans. The City of London, London's ancient core and financial centre, an area of just 1.12 square miles (2.9 km2) and colloquially known as the Square Mile, retains boundaries that closely follow its medieval limits. The adjacent City of Westminster has for centuries been the location of much of the national government. Thirty-one additional boroughs north and south of the river also comprise modern London. The London region is governed by the mayor of London and the London Assembly. (Full article...)
Hong Kong (/ˈhɒŋkɒŋ/; Chinese: 香港, Cantonese: [hœ́ːŋ.kɔ̌ːŋ] (listen)), officially the Hong Kong Special Administrative Region of the People's Republic of China (HKSAR), is a metropolitan area and special administrative region of China on the eastern Pearl River Delta in South China. With over 7.5 million residents of various nationalities in a 1,104-square-kilometre (426 sq mi) territory, Hong Kong is one of the most densely populated places in the world. (Full article...)
Earth is the third planet from the Sun and the only astronomical object known to harbor and support life. About 29.2% of Earth's surface is land consisting of continents and islands. The remaining 70.8% is covered with water, mostly by oceans, seas, gulfs, and other salt-water bodies, but also by lakes, rivers, and other freshwater, which together constitute the hydrosphere. Much of Earth's polar regions are covered in ice. Earth's outer layer is divided into several rigid tectonic plates that migrate across the surface over many millions of years, while its interior remains active with a solid iron inner core, a liquid outer core that generates Earth's magnetic field, and a convective mantle that drives plate tectonics. (Full article...)
