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2011–12 El Hierro Eruption
The 2011–2012 El Hierro eruption occurred just off the island of El Hierro, the smallest and farthest south and west of the Canary Islands (an autonomous community of Spain), in the Atlantic Ocean off the coast of Africa. The island is also the youngest in the volcanic chain. The October 2011 – March 2012 eruption was underwater, with a fissure of vents located approximately to the south of the fishing village of La Restinga on the southern coast of the island. Increased seismicity in June 2012 to the north-west of the vent did not result in another phase of eruptive activity. Until the 2021 La Palma eruption, which started on 19 September 2021, this was the last volcanic eruption in Spain. Earthquakes Beginning on 17 July 2011, increased seismic activity was detected by the Instituto Vulcanológico de Canarias (Volcanological Institute of the Canary Islands) and National Geographic Institute's seismic monitoring station located in Valverde. The seismic monitoring net ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Balloon
A lava balloon is a gas-filled bubble of lava that floats on the sea surface. It can be up to several metres in size. When it emerges from the sea, it is usually hot and often steaming. After floating for some time it fills with water and sinks again. Lava balloons can form in lava flows entering the sea and at volcanic vents, but they are not common. They have been observed in the Azores, Canary Islands, Hawaii, Japan, Mariana Islands and Mexico. Apparently, they are generated when gases trapped within magma form large bubbles that eventually rise to the sea surface. In the Canary Islands, balloons containing sediments were used to infer the age of the basement on which the volcano is constructed; these sediments were also at first misinterpreted as evidence of an impending large explosive eruption. Appearance Lava balloons are gas-filled bubbles surrounded by a crust formed by lava; their gas content allows them to float on the sea surface. Observed sizes range from at El H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instituto Geográfico Nacional (Spain)
The ''Instituto Geográfico Nacional'' (''IGN''), or National Geographic Institute is a Spanish government agency, dependent on the Spanish Ministry of Public Works. It is the national mapping agency for Spain, together with the Centro Nacional de Información Geográfica (CNIG). Since 2015, most of its products (including ''MTN50'' and ''MTN25'' topographic maps, and ''PNOA'' aerial photographies) are freely available online, and licensed under a CC-BY-4.0-like license, as ''FOM/2807/2015'' decree requires its products must be released under a free license. Roles The IGN is responsible for: # Astronomic observations and research # Observation and maintenance of the national geodetic networks # Making and updating the cartography for the country (including official National Topographic Maps, called MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale)) # Making and maintaining the IDEE or Infraestructura de Datos Espaciales de España, the Spanish Spatial Data Infrastructure # ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emissions Of Tagoro Submarine Volcano Near El Hierro In Canary Islands
Emission may refer to: Chemical products * Emission of air pollutants, notably: **Flue gas, gas exiting to the atmosphere via a flue ** Exhaust gas, flue gas generated by fuel combustion ** Emission of greenhouse gases, which absorb and emit radiant energy within the thermal infrared range * Emission standards, limits on pollutants that can be released into the environment * Emissions trading, a market-based approach to pollution control Electromagnetic radiation * Emission spectrum, the frequencies of electromagnetic radiation generated by molecular electrons making transitions to lower energy states * Thermal emission, electromagnetic radiation generated by the thermal motion of particles in matter * List of light sources, including both natural and artificial processes that emit light * Emission (radiocommunications), a radio signal (usually modulated) emitted from a radio transmitter * Emission coefficient, a coefficient in the power output per unit time of an electromagnetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most on Earth. Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in ancient India, ancient Greece, China, and ancient Egypt. Historically and in literature sulfur is also called brimstone, which means "burning stone". Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere The greatest commercial use of the element is the production o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Dioxide
Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.04% by volume (as of May 2022), having risen from pre-industrial levels of 280 ppm. Burning fossil fuels is the primary cause of these increased CO2 concentrations and also the primary cause of climate change.IPCC (2022Summary for policy makersiClimate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA Carbon dioxide is soluble in water and is found in groundwater, lakes, ice caps, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanganasoga
Tanganasoga is the main volcano of El Hierro's El Golfo area in the Canary Islands, consisting of a cinder cone. The volcano is part of a much larger shield volcano system. The volcano El Hierro is a 278.5 km2 island, formed approx 1.2 million year agoJuan Carlos Carracedo, Simon Day: ''Canary Islands. Classic Geology in Europe 4.'' Harpenden, Terra, 2002, Page 2 after three successive eruptions, the island emerged from the ocean as a triangle of basaltic dykes topped with a volcanic cone more than 2,000 metres high. With continued activity resulting in the island expanding to have the largest number of volcanoes in the Canaries (over 500 cones, another 300 covered by more recent deposits), together with approximately 70 caves and volcanic galleries, including the Cueva de Don Justo whose collection of channels is over 6 km in length. Landslides have reduced the size and height of the island. Tanganasoga is now the main volcano on the island. Landslides There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El País
''El País'' (; ) is a Spanish-language daily newspaper in Spain. ''El País'' is based in the capital city of Madrid and it is owned by the Spanish media conglomerate PRISA. It is the second most circulated daily newspaper in Spain . ''El País'' is the most read newspaper in Spanish online and one of the Madrid dailies considered to be a national newspaper of record for Spain (along with '' El Mundo'' and ''ABC)''. In 2018, its number of daily sales were 138,000. Its headquarters and central editorial staff are located in Madrid, although there are regional offices in the principal Spanish cities (Barcelona, Seville, Valencia, Bilbao, and Santiago de Compostela) where regional editions were produced until 2015. ''El País'' also produces a world edition in Madrid that is available online in English and in Spanish (Latin America). History ''El País'' was founded in May 1976 by a team at PRISA which included Jesus de Polanco, José Ortega Spottorno and Carlos Mendo. The p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magma
Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle or the crust in various tectonic settings, which on Earth include subduction zones, continental rift zones, mid-ocean ridges and hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal-rich mush zones. During magma's storage in the crust, its composition may be modified by fractional crystallization, contamination with crustal melts, magma mixing, and degassing. Following its ascent through the crust, magma may feed a volcano and be extruded as lava, or it may solidify underground to form an intrusion, such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harmonic Tremor
A harmonic tremor is a sustained release of seismic and infrasonic energy typically associated with the underground movement of magma, the venting of volcanic gases from magma, or both. It is a long-duration release of seismic energy, with distinct spectral lines, that often precedes or accompanies a volcanic eruption. More generally, a volcanic tremor is a sustained signal that may or may not possess these harmonic spectral features. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquakes and explosions. The relation between long-period events and an imminent eruption was first observed by Bernard Chouet, a volcanologist who was working at the United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Hierro Eruption MODIS 20111023
EL, El or el may refer to: Religion * El (deity), a Semitic word for "God" People * EL (rapper) (born 1983), stage name of Elorm Adablah, a Ghanaian rapper and sound engineer * El DeBarge, music artist * El Franco Lee (1949–2016), American politician * Ephrat Livni (born 1972), American street artist Arts, entertainment, and media Fictional entities * El, a character from the manga series ''Shugo Chara!'' by Peach-Pit * El, short for Eleven, a fictional character in the TV series ''Stranger Things'' * El, family name of Kal-El (Superman) and his father Jor-El in ''Superman'' *E.L. Faldt, character in the road comedy film ''Road Trip'' Literature * ''Él'', 1926 autobiographical novel by Mercedes Pinto * ''Él'' (visual novel), a 2000 Japanese adult visual novel Music * Él Records, an independent record label from the UK founded by Mike Alway * ''Él'' (Lucero album), a 1982 album by Lucero * "Él", Spanish song by Rubén Blades from ''Caminando'' (album) * "Él" (Luc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estudios Geológicos
''Estudios Geológicos'' is a peer-reviewed open access scholarly journal publishing research articles and reviews in Earth Sciences. It is a journal operated by the Spanish National Research Council (CSIC), with the Geosciences Institute at the Complutense University of Madrid The Complutense University of Madrid ( es, Universidad Complutense de Madrid; UCM, links=no, ''Universidad de Madrid'', ''Universidad Central de Madrid''; la, Universitas Complutensis Matritensis, links=no) is a public research university loca .... The current executive editor is Jose María Cebriá Gómez. Abstracting and indexing The journal is abstracted and indexed in: References External links * Open access journals Publications established in 1945 Spanish-language journals Geology journals {{Geology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontera, Santa Cruz De Tenerife
La Frontera (Spanish for "the border") is a municipality in the northwestern part of the island El Hierro, Santa Cruz de Tenerife, Canary Islands, Spain. In 2007, the southern part of the territory of La Frontera was split off to form the new municipality of El Pinar. Sites of interest * Punta de la Orchilla – the lighthouse west of the municipality; after building taken to be the prime meridian, being the westernmost point of the known world – identified with the island at large by Ptolemy in the 2nd century AD. It was taken as one of two prime meridians by Richelieu and hence scientists and cartographers under Louis XIII of France in 1634. Many 16th and 17th century international maps noted a co- or nominal only prime meridian here, among other contenders such as Rome or Paris. In 1884 the International Meridian Conference agreed to use the meridian of the Greenwich Royal Observatory as the standard prime meridian, which institution had carried out major work on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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