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Tianchi Eruption
The 946 eruption of Paektu Mountain in Korea and China, also known as the Millennium Eruption or Tianchi eruption, was one of the most powerful volcanic eruptions in recorded history and is classified as a VEI-7 event. The eruption resulted in a brief period of significant climate change in Manchuria. The year of the eruption has not been precisely determined, but a possible year is A.D. 946. The eruption ejected about of tephra and collapsed the mountain into a caldera, which now contains the crater lake named Heaven Lake. The eruption began with a strong Plinian column, and ended with voluminous pyroclastic flows. An average of of Plinian ashfall and co–ignimbrite ashfall covered about of the Sea of Japan and northern Japan. This ash layer has been named the "Baegdusan-Tomakomai ash" (B-Tm). It probably occurred in winter in late A.D. 946. This was one of the largest and most violent eruptions in the last 5,000 years, along with the Minoan eruption of Thera, the Hatepe e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paektu Mountain
Paektu Mountain (), also known as Baekdu Mountain and in China as Changbai Mountain ( zh, s=长白山, t=長白山; Manchu: Golmin Šanggiyan Alin), is an active stratovolcano on the Chinese–North Korean border. At , it is the highest mountain of the Baekdudaegan and Changbai ranges. Koreans assign a mythical quality to the volcano and its caldera lake, considering it to be their country's spiritual home. It is the highest mountain in North Korea and Northeast China. A large crater lake, called Heaven Lake, is in the caldera atop the mountain. The caldera was formed by the VEI 7 "Millennium" or "Tianchi" eruption of 946, which erupted about of tephra. This was one of the largest and most violent eruptions in the last 5,000 years (alongside the Minoan eruption, the Hatepe eruption of Lake Taupō in around AD 180, the 1257 eruption of Mount Samalas near Mount Rinjani and the 1815 eruption of Tambora). The mountain plays an important mythological and cultural and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heaven Lake
Heaven Lake (Korean: , ''Ch'ŏnji'' or ''Cheonji''; zh, 天池, ''Tiānchí''; Manchu: ''Tamun omo'' or ''Tamun juce'') is a crater lake on the border between China and North Korea. It lies within a caldera atop the volcanic Paektu Mountain, a part of the Baekdudaegan and Changbai mountain ranges. It is located partly in Ryanggang Province, North Korea, at , and partly in Jilin Province, northeastern China. Heaven Lake has been recognized as the highest volcanic lake in the world by the Shanghai Office of the ''Guinness Book of Records''. Geology and limnology The caldera which contains Heaven Lake was created by the 946 eruption of Paektu Mountain. The lake has a surface elevation of . The lake covers an area of with a south–north length of and an east–west length of . The average depth of the lake is and a maximum depth of . From mid-October to mid-June, it is typically covered with ice. History Names and legends In ancient Chinese literature, ' also refers to ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goryeosa
The ''Goryeosa'' (), or ''History of Goryeo'', is the main surviving historical record of Korea's Goryeo dynasty. It was composed nearly a century after the fall of Goryeo, during the reign of King Sejong, undergoing repeated revisions between 1392 and 1451. He ordered a committee of scholars led by Kim Jongseo and Jeong Inji to compile it, based on primary and secondary sources that are no longer extant. The ''Goryeo-sa'', written using Hanja script, consists of 139 volumes, 46 of which consist of chronicles, 39 of geography, 2 of Chronological tables, 50 of Biographies, and 2 of lists. The document has been digitized by the National Institute of Korean History and available online with Modern Korean translation in Hangul and original text in Hanja script. See also * Dongguk Tonggam * Samguk Sagi * Annals of the Joseon Dynasty * History of Korea References External links The official website showing the original text as well as the translation in Korean Hangul(Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiggle Matching
Wiggle matching, also known as ''carbon–14 wiggle-match dating'' (WMD) is a dating method that uses the non-linear relationship between 14C age and calendar age to match the shape of a series of closely sequentially spaced 14C dates with the 14C calibration curve. A numerical approach to WMD allows one to assess the precision of WMD chronologies. The method has both advantages and limitations vis-a-vis the calibration of individual dates. High-precision chronologies are needed for studies of rapid climate changes. Andrew Millard refers to wiggle matching as a way of dealing with the flat portion of the carbon 14 calibration graph that is known as the Hallstatt plateau, named after the Hallstatt culture The Hallstatt culture was the predominant Western Europe, Western and Central European Archaeological culture, culture of Late Bronze Age Europe, Bronze Age (Hallstatt A, Hallstatt B) from the 12th to 8th centuries BC and Early Iron Age Europe ... period in central Europ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1815 Eruption Of Mount Tambora
Mount Tambora is a volcano on the island of Sumbawa in present-day Indonesia, then part of the Dutch East Indies, and its 1815 eruption was the most powerful volcanic eruption in recorded human history. This volcanic explosivity index (VEI) 7 eruption ejected of material into the atmosphere, and was the most recent confirmed VEI-7 eruption. Although the Mount Tambora eruption reached a violent climax on 10 April 1815, increased steaming and small phreatic eruptions occurred during the next six months to three years. The ash from the eruption column dispersed around the world and lowered global temperatures in an event sometimes known as the Year Without a Summer in 1816. This brief period of significant climate change triggered extreme weather and harvest failures in many areas around the world. Several climate forcings coincided and interacted in a systematic manner that has not been observed after any other large volcanic eruption since the early Stone Age. Chronology of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rinjani
Mount Rinjani ( id, Gunung Rinjani) is an active volcano in Indonesia on the island of Lombok. Administratively the mountain is in the Regency of North Lombok, West Nusa Tenggara (Indonesian: ''Nusa Tenggara Barat'', NTB). It rises to , making it the second highest volcano in Indonesia. It is also the highest point in the Indonesian province of West Nusa Tenggara. Adjacent to the volcano is a caldera, which is filled partially by the crater lake known as Segara Anak or Anak Laut (''Child of the Sea''), due to the color of its water, as blue as the sea (''laut''). This lake is approximately above sea level and estimated to be about deep; the caldera also contains hot springs. Sasak tribe and Hindu people assume the lake and the mount are sacred and some religious activities are occasionally done in the two areas. UNESCO made Mount Rinjani Caldera a part of the Global Geoparks Network in April 2018. Geography Lombok is one of the Lesser Sunda Islands, a small archipelago ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1257 Samalas Eruption
In 1257, a catastrophic eruption occurred at the Samalas volcano on the Indonesian island of Lombok. The event had a probable Volcanic Explosivity Index of 7, making it one of the largest volcanic eruptions during the current Holocene epoch. It left behind a large caldera that contains Lake Segara Anak. Later volcanic activity created more volcanic centres in the caldera, including the Barujari cone, which remains active. The event created eruption columns reaching tens of kilometres into the atmosphere and pyroclastic flows that buried much of Lombok and crossed the sea to reach the neighbouring island of Sumbawa. The flows destroyed human habitations, including the city of Pamatan, which was the capital of a kingdom on Lombok. Ash from the eruption fell as far as away in Java; the volcano deposited more than of rocks and ash. The aerosols injected into the atmosphere reduced the solar radiation reaching the Earth's surface, causing a volcanic winter and cooling the atmospher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Taupo
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hatepe Eruption
The Hatepe eruption, named for the Hatepe Plinian pumice tephra layer, sometimes referred to as the Taupō eruption or Horomatangi Reef Unit Y eruption, is dated to 232 CE ± 10 and was Taupō Volcano's most recent major eruption. It is thought to be New Zealand's largest eruption within the last 20,000 years. The eruption ejected some of material, of which just over was ejected in a few minutes. This makes it one of the largest eruptions in the last 5,000 years, comparable to the Minoan eruption in the 2nd millennium BCE, the 946 eruption of Paektu Mountain, the 1257 eruption of Mount Samalas, and the 1815 eruption of Mount Tambora. Stages of the eruption The eruption went through several stages, with six distinct marker horizons identified. Despite the uniform composition of the erupted magma, a wide variety of eruptive styles were displayed, including weak phreatomagmatism, Plinian eruptions, and a huge pyroclastic flow. Rhyolitic lava domes were extruded some ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santorini
Santorini ( el, Σαντορίνη, ), officially Thira (Greek: Θήρα ) and classical Greek Thera (English pronunciation ), is an island in the southern Aegean Sea, about 200 km (120 mi) southeast from the Greek mainland. It is the largest island of a small circular archipelago, which bears the same name and is the remnant of a caldera. It forms the southernmost member of the Cyclades group of islands, with an area of approximately 73 km2 (28 sq mi) and a 2011 census population of 15,550. The municipality of Santorini includes the inhabited islands of Santorini and Therasia, as well as the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi and Christiana. The total land area is 90.623 km2 (34.990 sq mi). Santorini is part of the Thira regional unit. The island was the site of one of the largest volcanic eruptions in recorded history: the Minoan eruption (sometimes called the Thera eruption), which occurred about 3,600 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minoan Eruption
The Minoan eruption was a catastrophic Types of volcanic eruptions, volcanic eruption that devastated the Aegean Islands, Aegean island of Thera (also called Santorini) circa 1600 BCE. It destroyed the Minoan civilization, Minoan settlement at Akrotiri (prehistoric city), Akrotiri, as well as communities and agricultural areas on nearby islands and the coast of Crete with subsequent earthquakes and tsunamis. With a Volcanic Explosivity Index, VEI magnitude between 6 and 7, resulting in an ejection of approximately of dense-rock equivalent (DRE), the eruption was List of known large volcanic eruptions, one of the largest volcanic events on Earth in human history. Since tephra from the Minoan eruption serves as a marker horizon in nearly all archaeological sites in the Eastern Mediterranean, its precise date is of high importance and has been fiercely debated among archaeologists and volcanologists for decades, without coming to a definite conclusion. Although there are no clear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
