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Diego Ramírez Islands
The Diego Ramírez Islands () are a small group of Chilean subantarctic islands located at the southernmost extreme of South America. History The islands were sighted on 12 February 1619 by the Spanish Garcia de Nodal expedition, and named after the cosmographer of the expedition, Diego Ramírez de Arellano. They were cited as the southernmost land mass plotted as of that time, and retained the distinction for 156 years, until the discovery of the South Sandwich Islands in 1775. In 1892, the Chilean government rented the islands to Pedro Pablo Benavides for fishing and on condition that a lighthouse, a port, and a school would be built. Later the rent was transferred to Koenigswerther and Pasinowich. The Chilean Navy established a meteorological station above Caleta Condell, a small cove on the northeastern side of Isla Gonzalo (Gonzalo Island), in 1957, and resupplies it several times each year. This is the southernmost inhabited outpost outside Antarctica. The next most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Hydrographic Office
The United States Hydrographic Office (USHO) prepared and published maps, charts, and nautical books required in navigation. The office was established by an act of 21 June 1866 as part of the Bureau of Navigation, Department of the Navy. It was transferred to the Department of Defense on 10 August 1949. The office was abolished on 10 July 1962, replaced by the Naval Oceanographic Office. Objectives Before the hydrographic office was established in 1866, U.S. navigators were almost entirely dependent on British charts. A few private enterprises had prepared and published charts, but had not been able to do so profitably. The Hydrographic Office was established "for the improvement of the means for navigating safely the vessels of the Navy and of the mercantile marine, by providing, under the authority of the Secretary of the Navy, accurate and cheap nautical charts, sailing directions, navigators and manuals of instructions for the use of all vessels of the United States, and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Horn
Cape Horn (, ) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and is located on the small Hornos Island. Although not the most southerly point of South America (which is Águila Islet), Cape Horn marks the northern boundary of the Drake Passage and marks where the Atlantic and Pacific Oceans meet. Cape Horn was identified by mariners and first rounded in 1616 by the Dutchmen Willem Schouten and Jacob Le Maire, who named it after the city of Hoorn in the Netherlands. For decades, Cape Horn was a major milestone on the clipper route, by which sailing ships carried trade around the world. The waters around Cape Horn are particularly hazardous, owing to strong winds, large waves, strong currents and icebergs. The need for boats and ships to round Cape Horn was greatly reduced by the opening of the Panama Canal in August 1914. Sailing around Cape Horn is still widely regarded as one of the major challenges in yachting. Thus, a few recreational ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding important sites for birds, maintaining and restoring key bird habitats, and empowering conservationists worldwide. It has a membership of more than 2.5 million people across List of BirdLife International national partner organisations, 116 country partner organizations, including the Royal Society for the Protection of Birds, the Wild Bird Society of Japan, the National Audubon Society, and American Bird Conservancy. BirdLife International has identified 13,000 Important Bird Area, Important Bird and Biodiversity Areas and is the official International Union for Conservation of Nature's IUCN Red List, Red List authority for birds. BirdLife International has established that 1,375 bird species (13% of the total) are threatened with extinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Important Bird Area
An Important Bird and Biodiversity Area (IBA) is an area identified using an internationally agreed set of criteria as being globally important for the conservation of bird populations. IBA was developed and sites are identified by BirdLife International. There are over 13,000 IBAs worldwide. These sites are small enough to be entirely conserved and differ in their character, habitat or ornithological importance from the surrounding habitat. In the United States the program is administered by the National Audubon Society. Often IBAs form part of a country's existing protected area network, and so are protected under national legislation. Legal recognition and protection of IBAs that are not within existing protected areas varies within different countries. Some countries have a National IBA Conservation Strategy, whereas in others protection is completely lacking. History In 1985, following a specific request from the European Economic Community, Birdlife International dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (temperate), ''D'' (continental), and ''E'' (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the ''E'' group are assigned a seasonal precipitation subgroup (the second letter). For example, ''Af'' indicates a tropical rainforest climate. The system assigns a temperature subgroup for all groups other than those in the ''A'' group, indicated by the third letter for climates in ''B'', ''C'', ''D'', and the second letter for climates in ''E''. Other examples include: ''Cfb'' indicating an oceanic climate with warm summers as indicated by the ending ''b.'', while ''Dwb'' indicates a semi-Monsoon continental climate, monsoonal continental climate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tundra Climate
The tundra climate is a polar climate sub-type located in high latitudes and high mountains. It is classified as ET according to the Köppen climate classification. It is a climate which at least one month has an average temperature high enough to melt snow (), but no month with an average temperature in excess of . If the climate occurs at high elevations, it is known as alpine climate. Despite the potential diversity of climates in the ''ET'' category involving precipitation, extreme temperatures, and relative wet and dry seasons, this category is rarely subdivided. Rainfall and snowfall are generally slight due to the low vapor pressure of water in the chilly atmosphere, but as a rule potential evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes. The amount of native tundra biomass depends more on the local temperature than the amount of precipitation. Tundra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), founded as the Geological Survey, is an government agency, agency of the United States Department of the Interior, U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from List of NASA missions, U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magallania
''Magallania'' is an academic journal published by the University of Magallanes. It focuses on articles in the fields of social sciences and humanities related to Patagonia, Tierra del Fuego, and Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. .... The journal was initially published annually from its establishment in 1970 until 2005 when it transitioned to being issued twice a year. Spanish-language journals Biannual journals Academic journals published by universities of Chile University of Magallanes Academic journals established in 1970 1970 establishments in Chile Latin American studies journals Open access journals {{area-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seamount
A seamount is a large submarine landform that rises from the ocean floor without reaching the water surface (sea level), and thus is not an island, islet, or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abruptly and are usually found rising from the seafloor to in height. They are defined by oceanographers as independent features that rise to at least above the seafloor, characteristically of conical form.IHO, 2008. Standardization of Undersea Feature Names: Guidelines Proposal form Terminology, 4th ed. International Hydrographic Organization and Intergovernmental Oceanographic Commission, Monaco. The peaks are often found hundreds to thousands of meters below the surface, and are therefore considered to be within the deep sea. During their evolution over geologic time, the largest seamounts may reach the sea surface where wave action erodes the summit to form a flat surface. After they have subsided and sunk below the sea surface, such flat-top ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sars Bank
Sars Bank (named for M. Sars and G. O. Sars) is located in the Drake Passage in between the southern tip of South America and Antarctica. The bank's coordinates are , about 350 km south of Diego Ramírez Islands and 500 km from the South Shetland Islands. The top of the bank lies a few hundred meters under sea level. The bank has been proposed by Chilean historian Mateo Martinic as the location of the phantom Elizabeth Island, seen by Francis Drake's expedition in 1578. If the Sars Bank was ever above sea level it may have had significant biogeographical importance as a "bridge" between South America and Antarctica. See also *Insular Chile *Peter I Island Peter I Island () is an uninhabited volcanic island in the Bellingshausen Sea, from continental Antarctica. It is territorial claims in Antarctica, claimed as a Dependent territory, dependency of Norway and, along with Bouvet Island and Queen Ma ... References Guyots Landforms of Magallanes Region Undersea banks o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Águila Islet
Águila Islet (, "Eagle Islet") is the Extreme points of the Americas, southernmost point of the Americas. It is part of the larger southern group of the Diego Ramírez Islands, about southwest of Cape Horn in the Drake Passage. The distance to the closest Antarctic lands (Greenwich Island (South Shetland Islands), Greenwich Island, South Shetland Islands) is about and to the mainland (Antarctic Peninsula) is about . See also * Extreme points of the Antarctic * List of Antarctic and sub-Antarctic islands * List of extreme points of Chile References {{DEFAULTSORT:Aguila Island Uninhabited islands of Chile Diego Ramírez Islands Islands of Magallanes Region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isla Gonzalo
Isla Gonzalo is a subantarctic island, uninhabited except for a weather and research station operated by the Chilean Navy. With an area of , it is the second largest of the Chilean Diego Ramírez Archipelago after Isla Bartolomé. The archipelago lies in the Drake Passage between the continents of South America and Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. .... It is an important breeding site for black-browed (over 6000 pairs) and grey-headed (over 4000 pairs) albatrosses, as well as for southern giant petrels. See also * List of islands of Chile * List of Antarctic and sub-Antarctic islands * List of fjords, channels, sounds and straits of Chile References External links Islands of Chile @ United Nations Environment Programme World island i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
