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Surtsey
Surtsey ("Surtr's island" in Icelandic, ) is an uninhabited volcanic island located in the Vestmannaeyjar archipelago off the southern coast of Iceland. At Surtsey is the southernmost point of Iceland. It was formed in a volcanic eruption which began below sea level, and reached the surface on 14 November 1963. The eruption lasted until 5 June 1967, when the island reached its maximum size of . Since then, wave erosion has caused the island to steadily diminish in size: , its surface area was . The most recent survey (2007) shows the island's maximum elevation at above sea level. The new island was named after Surtr, a fire ''jötunn'' or giant from Norse mythology. It was intensively studied by volcanologists during its eruption, and afterwards by botanists and other biologists as life forms gradually colonised the originally barren island. The undersea vents that produced Surtsey are part of the Vestmannaeyjar submarine volcanic system, part of the fissure of the sea floo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Eruption
A volcanic eruption occurs when material is expelled from a volcanic vent or fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three main types of volcanic eruptions. Magmatic eruptions involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma. This type exhibits no magmatic release, instead causing the granulation of existing rock. Phreatomagmatic eruptions are driven by the direct interaction of magma and water, as opposed to phreatic eruptions, where no fresh magma reaches the surface. Within these broad eruptive types are several subtypes. The we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surtseyan Eruption
A Surtseyan eruption is a type of explosive eruption that takes place in shallow seas or lakes when rapidly rising and fragmenting hot magma interacts explosively with water and with water-steam- tephra slurries. The eruption style is named after an eruption off the southern coast of Iceland in 1963 that caused the emergence of a new volcanic island, Surtsey. Surtseyan eruptions are phreatomagmatic (also known as ''hydromagmatic'') eruptions, in that they are violently explosive as a result of vigorous interaction between rising magma and lake or sea water. The magma is commonly basaltic and fragments into small pyroclasts (known as ' ash' and ' lapilli'), and these accumulate around the crater to form a small cone or ring-shaped heap. Volcanoes of this type are known as ' tuff cones' and ' tuff rings' because the volcanic ash of which they are made soon solidifies by chemical reaction into a hard rock known as ' tuff'. Surtseyan eruptions are characteristically unsteady, wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jólnir
Jólnir () was formerly a volcanic island south of Iceland. It was a former vent of Surtsey, along with Syrtlingur and Surtla. It emerged from the ocean as a result of active plate tectonics between December, 1965 and July, 1966. Oceanic erosion cyclically wore down the new lava as it formed, and the island sank below the surface several times.Brief description from Dartmouth , (at the end of the report) /ref> It was named for Jólnir, a Norse god (usually identified as a second na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extreme Points Of Iceland
This is a list of the extreme points of Iceland, the points that are farther north, south, east or west than any other location. Iceland (country) * Northernmost point — Kolbeinsey, Eyjafjörður () * Northernmost settlement — Grímsey, Eyjafjörður () * Southernmost point — Surtsey, Vestmannaeyjar () * Southernmost settlement (farm) — Garðar, Vestur-Skaftafellssýsla (63°24'N, 019°03'W) * Southernmost settlement (town) — Vík, Vestur-Skaftafellssýsla (63°25'N, 019°01'W) * Westernmost point — Bjargtangar, Vestur-Barðastrandarsýsla () * Westernmost settlement (farm) — Hvallátur, Vestur-Barðastrandarsýsla (65°32'N, 024°28'W) * Westernmost settlement (town) — Patreksfjörður, Vestur-Barðastrandarsýsla (65°35'N, 23°59'W) * Easternmost point — Hvalbakur, Suður-Múlasýsla () * Easternmost settlement (farm) — Sandvík (Iceland), Sandvík, Suður-Múlasýsla (65°06'N, 013°33'W) * Easternmost settlement ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestmannaeyjar
Vestmannaeyjar (, sometimes anglicized as Westman Islands) is a municipality and archipelago off the south coast of Iceland. The largest island, Heimaey, has a population of 4,414, most of whom live in the archipelago's main town, Vestmannaeyjabær. The other islands are uninhabited, although six have single hunting cabins. Vestmannaeyjar came to international attention in 1973 with the eruption of Eldfell volcano, which destroyed many buildings and forced a month-long evacuation of the entire population to mainland Iceland. Approximately one-fifth of the town was destroyed before the lava flow was halted by application of 6.8billion litres of cold sea water. Geography The Vestmannaeyjar archipelago is young in geological terms. The islands lie in the Southern Icelandic Volcanic Zone and have been formed by eruptions over the past 10,000–12,000 years. The volcanic system consists of 70–80 volcanoes both above and below the sea. Vestmannaeyjar comprises the following isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the region's westernmost and most list of countries and dependencies by population density, sparsely populated country. Its Capital city, capital and largest city is Reykjavík, which is home to about 36% of the country's roughly 380,000 residents (excluding nearby towns/suburbs, which are separate municipalities). The official language of the country is Icelandic language, Icelandic. Iceland is on a rift between Plate tectonics, tectonic plates, and its geologic activity includes geysers and frequent Types of volcanic eruptions, volcanic eruptions. The interior consists of a volcanic plateau with sand and lava fields, mountains and glaciers, and many Glacial stream, glacial rivers flow to the sea through the Upland and lowland, lowlands. Iceland i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surtr
In Norse mythology, Surtr (Old Norse "black"Orchard (1997:154). or more narrowly "swart",Simek (2007:303–304) Surtur in modern Icelandic language, Icelandic), also sometimes written Surt in English, is a jötunn; he is the greatest of the fire giants and further serves as the guardian of Muspelheim, which is one of the only two realms to exist before the beginning of time, alongside Niflheim. Surtr is attested in the ''Poetic Edda'', compiled in the 13th century from earlier traditional sources, and the ''Prose Edda'', written in the 13th century by Snorri Sturluson. In both sources, Surtr is foretold as being a major figure during the events of Ragnarök; carrying his Flaming sword (mythology)#Germanic mythology, bright sword, he will go to battle against the Æsir, he will battle the major god Freyr, and afterward the List of mythological objects#Substances from Norse mythology, flames that he brings forth will engulf the Earth. In a book from the ''Prose Edda'' additional inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phreatic Eruption
A phreatic eruption, also called a phreatic explosion, ultravulcanian eruption or steam-blast eruption, occurs when magma heats ground water or surface water. The extreme temperature of the magma (anywhere from ) causes near-instantaneous evaporation of water to steam, resulting in an explosion of steam, water, ash, rock, and volcanic bombs. At Mount St. Helens in Washington state, hundreds of steam explosions preceded the 1980 Plinian eruption of the volcano. A less intense geothermal event may result in a mud volcano. Phreatic eruptions typically include steam and rock fragments; the inclusion of liquid lava is unusual. The temperature of the fragments can range from cold to incandescent. If molten magma is included, volcanologists classify the event as a phreatomagmatic eruption. These eruptions occasionally create broad, low-relief craters called '' maars''. Phreatic explosions can be accompanied by carbon dioxide or hydrogen sulfide gas-emissions. Carbon diox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norse Mythology
Norse, Nordic, or Scandinavian mythology, is the body of myths belonging to the North Germanic peoples, stemming from Old Norse religion and continuing after the Christianization of Scandinavia as the Nordic folklore of the modern period. The North Germanic languages, northernmost extension of Germanic mythology and stemming from Proto-Germanic folklore, Norse mythology consists of tales of various deities, beings, and heroes derived from numerous sources from both before and after the pagan period, including medieval manuscripts, archaeological representations, and folk tradition. The source texts mention numerous gods such as the thunder-god Thor, the Huginn and Muninn, raven-flanked god Odin, the goddess Freyja, and List of Germanic deities, numerous other deities. Most of the surviving mythology centers on the plights of the gods and their interaction with several other beings, such as humanity and the jötnar, beings who may be friends, lovers, foes, or family members of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reykjavík
Reykjavík is the Capital city, capital and largest city in Iceland. It is located in southwestern Iceland on the southern shore of Faxaflói, the Faxaflói Bay. With a latitude of 64°08′ N, the city is List of northernmost items, the world's northernmost capital of a sovereign state. Reykjavík has a population of around 139,000 as of 2025. The surrounding Capital Region (Iceland), Capital Region has a population of around 249,000, constituting around 64% of the country's population. Reykjavík is believed to be the location of the first permanent settlement in Iceland, which, according to , was established by Ingólfr Arnarson, Ingólfur Arnarson in 874 Anno Domini, AD. Until the 18th century, there was no urban development in the city location. The city was officially founded in 1786 as a trading town and grew steadily over the following decades, as it transformed into a regional and later Country, national centre of commerce, population, and governmental activities. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Ocean
The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe). Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse colonization of North America, Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be the most consequential. Columbus's expedition ushered in an Age of Discovery, age of exploration and colonization of the Americas by European powers, most notably Portuguese Empire, Portugal, Spanish Empire, Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
