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Metis Shoal
Metis Shoal, also known as Lateiki Island, is a volcanic island at the top of a submarine volcano in Tonga, located between the islands of Kao and Late. The current island formed in October 2019, when a smaller island disappeared after 24 years. History The shoal was named by the captain of the HMS ''Metis'' in 1875, who found a small volcanic island protruding from the ocean. The island was reported as being 200m long and 37m high by HMS ''Sappho'' in 1878, and as 480m high in 1890, but had eroded away completely by 1898, leaving a shoal covered by 4m of water. Eruptions and short-lived islands have been reported as far back as 1781, according to the Global Volcanism Program. In December 1967 an eruption produced another short-lived island, which disappeared by the end of 1968. An eruption in 1979 discharged large amounts of pumice, and formed an island 16km in diameter. The new island was named "Lateiki" ("lies besides Late") and claimed by Tonga in a flag-raising ceremony, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metis Shoal
Metis Shoal, also known as Lateiki Island, is a volcanic island at the top of a submarine volcano in Tonga, located between the islands of Kao and Late. The current island formed in October 2019, when a smaller island disappeared after 24 years. History The shoal was named by the captain of the HMS ''Metis'' in 1875, who found a small volcanic island protruding from the ocean. The island was reported as being 200m long and 37m high by HMS ''Sappho'' in 1878, and as 480m high in 1890, but had eroded away completely by 1898, leaving a shoal covered by 4m of water. Eruptions and short-lived islands have been reported as far back as 1781, according to the Global Volcanism Program. In December 1967 an eruption produced another short-lived island, which disappeared by the end of 1968. An eruption in 1979 discharged large amounts of pumice, and formed an island 16km in diameter. The new island was named "Lateiki" ("lies besides Late") and claimed by Tonga in a flag-raising ceremony, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Volcanoes In Tonga ...
This is a list of active and extinct volcanoes in Tonga. References * See especiallFigure 1 * D. Stanley; South Pacific handbook * Government of Tonga, official 1962 land survey {{reflist Tonga Volcanoes A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Tonga
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Volcanoes
Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for 75% of the magma output on Earth.Martin R. Speight, Peter A. Henderson, "Marine Ecology: Concepts and Applications", John Wiley & Sons, 2013. . Although most submarine volcanoes are located in the depths of seas and oceans, some also exist in shallow water, and these can discharge material into the atmosphere during an eruption. The total number of submarine volcanoes is estimated to be over 1 million (most are now extinct) of which some 75,000 rise more than 1 km above the seabed. Only 119 submarine volcanoes in Earth's oceans and seas are known to have erupted during the last 11,700 years. Hydrothermal vents, sites of abundant biological activity, are commonly found near submarine volcanoes. Eff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcanoes
An active volcano is a volcano which is either erupting or is likely to erupt in the future. An active volcano which is not currently erupting is known as a dormant volcano. Overview Tlocene Epoch. Most volcanoes are situated on the Pacific Ring of Fire. An estimated 500 million people live near active volcanoes. ''Historical time'' (or recorded history) is another timeframe for ''active''. However, the span of recorded history differs from region to region. In China and the Mediterranean, it reaches back nearly 3,000 years, but in the Pacific Northwest of the United States and Canada, it reaches back less than 300 years, and in Hawaii and New Zealand it is only around 200 years. The incomplete ''Catalogue of the Active Volcanoes of the World'', published in parts between 1951 and 1975 by the International Association of Volcanology, uses this definition, by which there are more than 500 active volcanoes. , the Smithsonian Global Volcanism Program recognizes 560 volcanoes with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 In Tonga
Events in the year 2019 in Tonga. Incumbents * Monarch: Tupou VI * Prime Minister: ʻAkilisi Pōhiva (until 12 September), Semisi Sika (acting, from 12 September until 8 October), Pohiva Tuʻiʻonetoa (from 8 October) Events October * Metis Shoal, a volcanic island at the top of a submarine volcano between Kao and Late disappears during an eruption which is first reported on the morning of 14 October. A new and bigger island appears nearby. Deaths *12 September – ʻAkilisi Pōhiva, Prime Minister (b. 1941). Radio New Zealand, 12 September 2019 References {{Oceania topic, 2019 in[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 In Science
A number of significant scientific events occurred in 2019. Events January *1 January The ''New Horizons'' space probe flies by Kuiper belt object 486958 Arrokoth (nicknamed ''Ultima Thule''), the outermost close encounter of any Solar System object. *2 January A study finds that tons of methane, a greenhouse gas, are released into the atmosphere by melting ice sheets in Greenland. *3 January **China's National Space Administration (CNSA) achieves the first soft landing on the far side of the Moon with its Chang'e 4 mission. **Scientists report the engineering of crops with a photorespiratory "shortcut" to boost plant growth by 40% in real-world agronomic conditions. *4 January **Researchers at Ecole polytechnique fédérale de Lausanne (EPFL) report a way to control properties of excitons and change the polarisation of light they generate, which could lead to transistors that undergo less energy loss and heat dissipation. **Researchers design an inhalable form of messenger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1995 In Tonga
File:1995 Events Collage V2.png, From left, clockwise: O.J. Simpson is acquitted of the murders of Nicole Brown Simpson and Ronald Goldman from the year prior in "The Trial of the Century" in the United States; The Great Hanshin earthquake strikes Kobe, Japan, killing 5,000-6,000 people; The Unabomber Manifesto is published in several U.S. newspapers; Gravestones mark the victims of the Srebrenica massacre near the end of the Bosnian War; Windows 95 is launched by Microsoft for PC; The first exoplanet, 51 Pegasi b, is discovered; Space Shuttle Atlantis docks with the Space station Mir in a display of U.S.-Russian cooperation; The Alfred P. Murrah Federal Building in Oklahoma City is bombed by domestic terrorists, killing 168., 300x300px, thumb rect 0 0 200 200 O. J. Simpson murder case rect 200 0 400 200 Kobe earthquake rect 400 0 600 200 Unabomber Manifesto rect 0 200 300 400 Oklahoma City bombing rect 300 200 600 400 Srebrenica massacre rect 0 400 200 600 Space Shuttle Atlanti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1995 In Science
The year 1995 in science and technology involved many significant events, listed below. Astronomy and space exploration * February – Project Phoenix begins looking for extraterrestrial transmissions using the Parkes Observatory radio telescope in New South Wales, Australia, the largest telescope in the Southern Hemisphere. * February 8 – Asteroid 6349 Acapulco is discovered by Masahiro Koishikawa. * March 22 – Cosmonaut Valeri Polyakov returns after setting a record for 438 days in space. * July 23 – Comet Hale–Bopp is discovered by Alan Hale and Thomas Bopp independently. * October 6 – 51 Pegasi b: Didier Queloz and Michel Mayor of the University of Geneva at the Observatoire de Haute-Provence announce the first definitive detection of an extrasolar planet orbiting an ordinary main sequence star (51 Pegasi) and the first "hot Jupiter". * The "Big Ear" at the Ohio State University Radio Observatory ends its full-time search for extraterrestrial intelligence radio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of New Islands
Below is a list of new islands created since the beginning of the 20th century by volcanism, erosion, Retreat of glaciers since 1850, glacial retreat, or other mechanisms. One of the most famous new volcanic islands is the small island of Surtsey, located in the Atlantic Ocean south of Iceland. It first emerged from the ocean surface in 1963. Two years later, Surtsey was declared a nature reserve for the study of ecological succession; plants, insects, birds, seals, and other forms of life have since established themselves on the island. Another noted new island is Anak Krakatau (the so-called "child of Krakatoa", which formed in the flooded caldera of that notorious volcano in Indonesia), which emerged only in 1930. Ample rainforests have grown there, although they are often destroyed by frequent volcano, eruptions. A population of many wild animals, including insects, birds, humanborne rats, and even monitor lizards, have also settled there. Didicas Volcano off the northern co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air New Zealand
Air New Zealand Limited () is the flag carrier airline of New Zealand. Based in Auckland, the airline operates scheduled passenger flights to 20 domestic and 30 international destinations in 18 countries, primarily around and within the Pacific Rim. The airline has been a member of the Star Alliance since 1999. Air New Zealand succeeded Tasman Empire Airways Limited on 1 April 1965. The airline served only international routes until 1978, when the government merged it and the domestic New Zealand National Airways Corporation (NAC) into a single airline under the Air New Zealand name. Air New Zealand was privatised in 1989, but returned to majority government ownership in 2001 after near bankruptcy due to a failed tie up with Australian carrier Ansett Australia. In the 2017 financial year to June, Air New Zealand carried 15.95 million passengers. Air New Zealand's route network focuses on Australasia and the South Pacific, with long-haul flight services to eastern Asia and Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Island
Geologically, a high island or volcanic island is an island of volcanic origin. The term can be used to distinguish such islands from low islands, which are formed from sedimentation or the uplifting of coral reefs (which have often formed on sunken volcanos). Definition and origin There are a number of "high islands" that rise no more than above sea level, often classified as "islets or rocks", while some low islands, such as Banaba, Henderson Island, Makatea, Nauru, and Niue, as uplifted coral islands, rise over above sea level. The two types of islands are often found in proximity to each other, especially among the islands of the South Pacific Ocean, where low islands are found on the fringing reefs that surround most high islands. Volcanic islands normally arise above a hotspot. Habitability High islands above a certain size usually have fresh groundwater Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
