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Taal Caldera
Taal Lake ( tl, Lawa ng Taal, ), formerly known as Bombón Lake, is a freshwater caldera lake in the province of Batangas, on the island of Luzon in the Philippines. The lake fills Taal Volcano, a large volcanic caldera formed by very large eruptions between 500,000 and 100,000 years ago. It is the country's third-largest lake, after Laguna de Bay and Lake Lanao. Volcano Island, the location of Taal Volcano's historical eruptions and responsible for the lake's sulfuric content, lies near the center of the lake. Up until the 2020 eruption of Taal Volcano there was a crater lake on Volcano Island. It was known as Yellow Lake and Main Crater Lake and contained its own small island, Vulcan Point. Vulcan Point was thought to be one of few third-order islands in the world. Protected area and management The Taal Lake basin was first declared as a national park, known as the Taal Volcano National Park, by Proclamation No. 235 on July 22, 1967, covering . Under Repu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batangas
Batangas, officially the Province of Batangas ( tl, Lalawigan ng Batangas ), is a province in the Philippines located in the Calabarzon region on Luzon. Its capital is the city of Batangas, and is bordered by the provinces of Cavite and Laguna to the north, and Quezon to the east. Across the Verde Island Passages to the south is the island of Mindoro and to the west lies the South China Sea. Poetically, Batangas is often referred to by its ancient name Kumintáng. Batangas is one of the most popular tourist destinations near Metro Manila. It is home to the well-known Taal Volcano, one of the Decade Volcanoes, and Taal Heritage town, a small town that has ancestral houses and structures dating back to the 19th century. The province also has numerous beaches and diving spots including Anilao in Mabini, Sombrero Island in Tingloy, Ligpo Island and Sampaguita Beach in Bauan, Matabungkay in Lian, Punta Fuego in Nasugbu, Calatagan and Laiya in San Juan. All of the mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caldera Lake
A volcanic crater lake is a lake in a crater that was formed by explosive activity or a collapse during a volcanic eruption. Formation Lakes in calderas fill large craters formed by the collapse of a volcano during an eruption. Lakes in maars fill medium-sized craters where an eruption deposited debris around a vent. Crater lakes form as the created depression, within the crater rim, is filled by water. The water may come from precipitation, groundwater circulation (often hydrothermal fluids in the case of volcanic craters) or melted ice. Its level rises until an equilibrium is reached between the rates of incoming and outgoing water. Sources of water loss singly or together may include evaporation, subsurface seepage, and, in places, surface leakage or overflow when the lake level reaches the lowest point on its rim. At such a saddle location, the upper portion of the lake is contained only by its adjacent natural volcanic dam; continued leakage through or surface outflow acr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inlet
An inlet is a (usually long and narrow) indentation of a shoreline, such as a small arm, bay, sound, fjord, lagoon or marsh, that leads to an enclosed larger body of water such as a lake, estuary, gulf or marginal sea. Overview In marine geography, the term "inlet" usually refers to either the actual channel between an enclosed bay and the open ocean and is often called an "entrance", or a significant recession in the shore of a sea, lake or large river. A certain kind of inlet created by past glaciation is a fjord, typically but not always in mountainous coastlines and also in montane lakes. Multi-arm complexes of large inlets or fjords may be called sounds, e.g., Puget Sound, Howe Sound, Karmsund (''sund'' is Scandinavian for "sound"). Some fjord-type inlets are called canals, e.g., Portland Canal, Lynn Canal, Hood Canal, and some are channels, e.g., Dean Channel and Douglas Channel. Tidal amplitude, wave intensity, and wave direction are all factors that in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park
A national park is a nature park, natural park in use for conservation (ethic), conservation purposes, created and protected by national governments. Often it is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Although individual nations designate their own national parks differently, there is a common idea: the conservation of 'wild nature' for posterity and as a symbol of national pride. The United States established the first "public park or pleasuring-ground for the benefit and enjoyment of the people", Yellowstone National Park, in 1872. Although Yellowstone was not officially termed a "national park" in its establishing law, it was always termed such in practice and is widely held to be the first and oldest national park in the world. However, the Tobago Main Ridge Forest Reserve (in what is now Trinidad and Tobago; established in 1776), and the area surrounding Bogd Khan Mountain, Bogd Khan Uul Mountain (Mongolia, 1778), wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recursive Islands And Lakes
A recursive island or lake is an island or a lake that lies within a lake or an island. For the purposes of defining recursion, small continental land masses such as Madagascar and New Zealand count as islands, while large continental land masses do not. Islands found within lakes in these countries are often recursive islands because the lake itself is located on an island. Recursive islands Islands in lakes Only a few notable examples are given. Islands in lakes on islands There are nearly 1,000 islands in lakes on islands in Finland alone. Islands in lakes on islands in lakes Islands in lakes on islands in lakes on islands Until 2020, Vulcan Point was an island that existed in Main Crater Lake on Volcano Island in Lake Taal on Luzon in the Philippines. Main Crater Lake evaporated during the 2020 Taal Volcano eruption, but the water in Taal Lake has returned and has a new island. Vulcan Point became a peninsula. Islands in lakes on islands in lake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taal Volcano Main Crater Lake
Taal Volcano Main Crater Lake (; or simply Main Crater Lake), historically known as Yellow Lake, is a lake inside the main crater of Taal Volcano. The origin of the lake is uncertain but is thought to have formed by rainwater. The lake briefly disappeared after the 2020 eruption of Taal Volcano. There is an island inside of Main Crater Lake, called Vulcan Point. History Disappearance After the January 12, 2020, eruption of Taal Volcano, satellite images showed that the water in Main Crater Lake had disappeared. Although the main cause of its disappearance is unknown, it is suggested that the water must have dried up due to the fissures that formed after the eruption. The lava beneath the volcano may also have contributed to the evaporation of the lake. After Taal Volcano calmed down, a series of typhoons allowed rain to re-accumulate and reform Main Crater Lake. Geography Vulcan Point ''Vulcan Point Island'', or simply ''Vulcan Point'', is a small rocky island insid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2020–2021 Taal Volcano Eruptions
The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the endash , generally longer than the hyphen but shorter than the minus sign; the emdash , longer than either the en dash or the minus sign; and the horizontalbar , whose length varies across typefaces but tends to be between those of the en and em dashes. History In the early 1600s, in Okes-printed plays of William Shakespeare, dashes are attested that indicate a thinking pause, interruption, mid-speech realization, or change of subject. The dashes are variously longer (as in King Lear reprinted 1619) or composed of hyphens (as in Othello printed 1622); moreover, the dashes are often, but not always, prefixed by a comma, colon, or semicolon. In 1733, in Jonathan Swift's ''On Poetry'', the terms ''break'' and ''dash'' are attested for and marks: Blot out, correct, insert, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Lanao
Lake Lanao (Maranao: ''Ranao'' or ''Ranaw'') is a large ancient lake in the province of Lanao del Sur, Philippines. With a surface area of , it is the largest lake in Mindanao, and the second largest lake in the Philippines and counted as one of the 15 ancient lakes in the world. Scholars have been pushing for the lake's inclusion in the UNESCO World Heritage List. History In 1965, Lake Lanao was renamed to ''Lake Sultan Alonto'' by Republic Act No. 4260, which was later repealed by Republic Act No. 6434 in 1972. Lake Lanao was proclaimed as a watershed reservation in 1992 by President Corazon Aquino through Presidential Proclamation No. 971 to ensure protection of forest cover and water yield for hydropower, irrigation and domestic use. Section 22 of Article XIII of the Bangsamoro Organic Law does not include this lake as being under the jurisdiction of the Bangsamoro Autonomous Region in Muslim Mindanao; certain sectors of the Maranao people had sought the inclusion of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laguna De Bay
Laguna de Bay (Spanish language, Spanish for "Lagoon/Lake of Bay, Laguna, Bay"; tl, Lawa ng Bay, ), also known as Laguna Lake, is the List of lakes of the Philippines, largest lake in the Philippines. It is located southeast of Metro Manila, between the Provinces of the Philippines, provinces of Laguna (province), Laguna to the south and Rizal to the north. A freshwater lake, it has a surface area of 911–949 km² (352–366 sq mi), with an average depth of about and an elevation of about one meter above sea level. The lake is shaped like a crow's foot, with two peninsulas jutting out from the northern shore and filling the large volcanic Laguna Caldera. In the middle of the lake is the large island of Talim Island, Talim. The lake is one of the primary sources of freshwater fish in the country. Its water drains to Manila Bay via the Pasig River. Environmental issues in the Philippines, Environmental issues such as water quality problems created by population pressure an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lakes Of The Philippines
The origin of most of the lakes in the Philippines is closely related to volcanic and tectonic activity. A number of smaller lakes occupy the craters of extinct volcanoes. Some lake basins are developed by subsidence due to tectonic or volcanic activity. Others owe their existence to obstruction of drainage courses by landslides, lava flows and by fragmental volcanic ejecta. Among the lakes which are known in the Philippines only three, namely, Laguna de Bay in Luzon, Taal Lake in Luzon, and Lake Lanao in Mindanao, stand out prominently because of their size or economic importance. List The following is a partial alphabetical listing of permanent lakes (''excluding flood plains'') in the Philippines. Gallery Largest and deepest lakes File:LagunaCaldera04.jpg, Laguna de Bay, the largest lake in the Philippines File:Lake Lanao zoom.jpg, Lake Lanao, second File:Taal View from Tagaytay 2010.JPG, Taal Lake, third File:Lake Mainit Surigao del Norte sunset.JPG, Lake Mai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Eruption
Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—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 different types of eruptions: * Magmatic eruptions are the most well-observed type of eruption. They 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 erup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is gone. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a Volcanic crater, crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur each century, the formation of a caldera is a rare event, occurring only a few times per century. Only seven caldera-forming collapses are known to have occurred between 1911 and 2016. More recently, a caldera collapse occurred at Kīlauea, Hawaii in 2018. Etymology The term ''caldera'' comes from Spanish language, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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