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Mount Iriga
Mount Iriga, also known as Mount Asog, is an active stratovolcano in the province of Camarines Sur, in the Philippines. It is a stratovolcano about a kilometer from Lake Buhi. It rises with a base diameter of . It has a large crater formed due to a debris avalanche. Mount Iriga, generally known for its phreatic explosions, erupted in 1628 and 1642. After these eruptions, it remained dormant. Gallery File:Mr. Asog 2.JPG, View from San Ramon, Iriga File:Iriga Rice farming WTR.JPG, View from San Jose, Iriga File:Mt. asog view at perpetual help gawad kalinga.JPG, View from Perpetual Help, Iriga File:Iriga Central Terminal WTR.jpg, View from Iriga Central Terminal See also * List of potentially active volcanoes in the Philippines * List of inactive volcanoes in the Philippines * Philippine Institute of Volcanology and Seismology * Iriga City Iriga, officially the City of Iriga ( Rinconada Bikol: ''Syudad ka Iriga''; bcl, Siyudad nin Iriga; fil, Lungsod ng Iriga), is comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Active Volcanoes In The Philippines
This is a list of active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Volcanoes in the country have erupted within the last 600 years, with accounts of these eruptions documented by humans; or have erupted within the last 10,000 years (Holocene). As of 2018, PHIVOLCS has listed 24 volcanoes as Volcano#Active, active in the Philippines, 21 of which have had historical eruptions. The three exceptions are Cabalian, which is a strongly Fumarole, fumarolic volcano; Leonard Kniaseff, which was active 1,800 years ago (C14), and Mount Isarog, Isarog, which last erupted around 3500 BCE and 2374 BCE ± 87 based on radiocarbon dating There are 100 volcanoes in the Philippines listed by the Smithsonian Institution's Global Volcanism Program (GVP) at present, of which 20 are categorized as "historical" and 59 as "Holocene". The GVP lists volcanoes with historical, Holocene eruptions, or possibly older if strong signs of vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Buhi
Lake Buhi is a lake found in Buhi, Camarines Sur in the Philippines. It has an area of and has an average depth of . The lake lies in the valley formed by two ancient volcanoes, Mount Iriga (also known as ''Mount Asog'') and Mount Malinao. It was created in 1641, when an earthquake caused a side of Mount Asog to collapse. The resulting landslide created a natural dam that blocked the flow of nearby streams. Another theory suggests that it was created by the eruption of Mt. Asog, which is now dormant. The lake is famous since it is one of the few bodies of water that contains the ''sinarapan'' (''Mistichthys luzonensis'') which is the world's smallest commercially harvested fish. Aside from the ''sinarapan'', Lake Buhi is also home for other marine organisms such as the ''Irin-irin'' ('' Redigobius bikolanus''), ''Dalag'' (''Channa striata''), ''Puyo'' (''Anabas testudineus''), ''Kotnag'' ('' Hemiramphus sp.''), ''Burirawan'' (''Strophidon sathete'') and native catfish ('' Claria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcanoes Of The Philippines
This is a list of active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Volcanoes in the country have erupted within the last 600 years, with accounts of these eruptions documented by humans; or have erupted within the last 10,000 years (Holocene). As of 2018, PHIVOLCS has listed 24 volcanoes as active in the Philippines, 21 of which have had historical eruptions. The three exceptions are Cabalian, which is a strongly fumarolic volcano; Leonard Kniaseff, which was active 1,800 years ago (C14), and Isarog, which last erupted around 3500 BCE and 2374 BCE ± 87 based on radiocarbon dating There are 100 volcanoes in the Philippines listed by the Smithsonian Institution's Global Volcanism Program (GVP) at present, of which 20 are categorized as "historical" and 59 as "Holocene". The GVP lists volcanoes with historical, Holocene eruptions, or possibly older if strong signs of volcanism are still evident through the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Luzon
A volcano is a rupture in the Crust (geology), crust of a Planet#Planetary-mass objects, planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and volcanic gas, gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where list of tectonic plates, tectonic plates are divergent boundary, diverging or convergent boundary, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction Volcanoes
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex. The process of subduction has created most of the Earth's continental crust. Rates of subduction are typically measured in centimeters per year, with the average rate of convergence being approximately two to eight centimeters per year along most plate boundaries. Subduction is possible because the cold oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle underlying the cold, rigid lithosphere. Once initiated, stable subduction is driven mostly by the negative buoyancy of the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcanoes Of The Philippines
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of volcanoes, in contrast to the less common shield volcan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of The Philippines
The following is a partial list of mountains in the Philippines. Several of these are List of volcanoes in the Philippines, volcanoes, formed by subduction, subducting tectonic plates surrounding the archipelago. List This list contains most of the highest mountains in the country. It is limited to mountain Summit (topography), peaks with, if known, an elevation of at least above sea level, and may include those considered as hills. The distinction between a hill and a mountain in terms of elevation is unclear and largely subjective, but a hill is universally considered to be less tall and less steep than a mountain. * ''Name'': mountains are sorted according to ''only name''s (without the "Mount" prefix) for easier reference in name and spelling variants. Unnamed peaks are ''italicized''. ''(note: to minimize clutter, citations for names are limited only to mountains with Variant name (geography), variant names, spellings, and/or those that currently do not have elevation da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iriga City
Iriga, officially the City of Iriga (Rinconada Bikol: ''Syudad ka Iriga''; bcl, Siyudad nin Iriga; fil, Lungsod ng Iriga), is component city in the province of Camarines Sur, Philippines. According to the 2020 census, it has a population of 114,457 people. It is located about south-east of Manila, and about south of Naga, Camarines Sur. History Barely half a century after Ferdinand Magellan discovered the Philippines on March 16, 1521, Iriga, now a city, was only a visita of Nabua, Provincia de Ambos Camarines. Because of the disastrous floods that occur during rainy seasons in suburban Poblacion of Nabua, Father Felix de Huertas, the then parish priest, advised the farmers to move to I-raga (donde hay tierra or where there is land) where they can plant their crops without fear of being flooded. The flood victims of Nabua who moved earlier and followed the suggestions of their parish priest were the fortunate beneficiaries of the harvest of their agricultural plantation c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Institute Of Volcanology And Seismology
The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; tl, Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in support of economic, productivity, and sustainable development. It is one of the service agencies of the Department of Science and Technology. PHIVOLCS monitors volcano, earthquake, and tsunami activity, and issues warnings as necessary. It is mandated to mitigate disasters that may arise from such volcanic eruptions, earthquakes, tsunamis, and other related geotectonic phenomena. History This government organization was formed after a historical merging of official functions of government institutions. One of its first predecessors is the Philippine Weather Bureau created in 1901 when meteorological, seismological a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Inactive Volcanoes In The Philippines
This is a list of inactive volcanoes in the Philippines. Volcanoes with no record of eruptions are considered as extinct or inactive. Their physical form since their last activity has been altered by agents of weathering and erosion with the formation of deep and long gullies. Philippines Institute of Volcanology and Seismology. Retrieved on November 5, 2013. Inactive does not necessarily indicate the volcano will not erupt again. had no recorded historical eruption before its cataclysmic 1991 eruption [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Potentially Active Volcanoes In The Philippines
This is a list of potentially active volcanoes in the Philippines, as classified by the Philippine Institute of Volcanology and Seismology. List See also * List of active volcanoes in the Philippines * List of inactive volcanoes in the Philippines * List of mountains in the Philippines References Philippine Institute of Volcanology and Seismology (PHIVOLCS) Potentially Active Volcano list Philippine Institute of Volcanology and Seismology (PHIVOLCS) Active Volcano list Philippine Institute of Volcanology and Seismology (PHIVOLCS) Inactive Volcano list External links * {{Volcanoes of the Philippines 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 ... Philippines, potentially active *potentially Volcanism of the Philippines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phreatic
''Phreatic'' is a term used in hydrology to refer to aquifers, in speleology to refer to cave passages, and in volcanology to refer to a type of volcanic eruption. Hydrology The term phreatic (the word originates from the Greek , meaning "well" or "spring") is used in hydrology and the earth sciences to refer to matters relating to ground water (an aquifer) below the water table. The term 'phreatic surface' indicates the location where the pore water pressure is under atmospheric conditions (i.e. the pressure head is zero). This surface normally coincides with the water table. The slope of the phreatic surface is assumed to indicate the direction of ground water movement in an unconfined aquifer. The phreatic zone, below the phreatic surface where rock and soil is saturated with water, is the counterpart of the vadose zone, or unsaturated zone, above. Unconfined aquifers are also referred to as phreatic aquifers because their upper boundary is provided by the phreatic surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
