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Lake Towada
is the largest crater lake in Honshū island, Japan. Located on the border between Aomori and Akita prefectures, it lies 400 meters (1,800 ft) above sea level and is 327 m (1,073 ft) deep, drained by the Oirase river. With a surface area of 61.1 km², Towada is Japan's 12th largest lake, its bright blue color is due to its great depth. The lake is roughly circular, with two peninsulas extending from its southern shore approximately one-third into the center of the lake. The lake is a popular tourist destination. Location Lake Towada is located approximately northeast of Tokyo, divided between the municipalities of Towada, Aomori and Kosaka, Akita. It forms part of the northern section of Towada-Hachimantai National Park Geology Lake Towada occupies the caldera of a stratovolcano still regarded as an active volcano. This volcano became active around 200,000 years ago, and through repeated eruptions and pyroclastic flows, especially 55,000 and 36,000 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honshū
, historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island separates the Sea of Japan, which lies to its north and west, from the North Pacific Ocean to the south and east. It is the seventh-largest island in the world, and the second-most populous after the Indonesian island of Java. Honshu had a population of 104 million , constituting 81.3% of the entire population of Japan, and is mostly concentrated in the coastal areas and plains. Approximately 30% of the total population resides in the Greater Tokyo Area on the Kantō Plain. As the historical center of Japanese cultural and political power, the island includes several past Japanese capitals, including Kyōto, Nara and Kamakura. Much of the island's southern shore forms part of the Taiheiyō Belt, a megalopolis that spans several of the Japanese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcano
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] |
Kamakura
is a city in Kanagawa Prefecture, Japan. Kamakura has an estimated population of 172,929 (1 September 2020) and a population density of 4,359 persons per km² over the total area of . Kamakura was designated as a city on 3 November 1939. Kamakura was the ''de facto'' capital of Japan from 1185 to 1333 as the seat of the Kamakura shogunate, and became the nation's most populous settlement during the Kamakura period. Kamakura is a popular domestic tourist destination in Japan as a coastal city with a high number of seasonal festivals, as well as ancient Buddhist and Shinto shrines and temples. Geography Surrounded to the north, east, and west by hills and to the south by the open water of Sagami Bay, Kamakura is a natural fortress. Before the construction of several tunnels and modern roads that now connect it to Fujisawa, Ofuna ( ja) and Zushi, on land it could be entered only through narrow artificial passes, among which the seven most important were called , a name some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Ash
Volcanic ash consists of fragments of rock, mineral crystals, and volcanic glass, created during volcano, volcanic eruptions and measuring less than 2 mm (0.079 inches) in diameter. The term volcanic ash is also often loosely used to refer to all explosive eruption products (correctly referred to as ''tephra''), including particles larger than 2 mm. Volcanic ash is formed during explosive volcanic eruptions when dissolved gases in magma expand and escape violently into the atmosphere. The force of the gases shatters the magma and propels it into the atmosphere where it solidifies into fragments of volcanic rock and glass. Ash is also produced when magma comes into contact with water during phreatomagmatic eruptions, causing the water to explosively flash to steam leading to shattering of magma. Once in the air, ash is transported by wind up to thousands of kilometres away. Due to its wide dispersal, ash can have a number of impacts on society, including animal a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tōhoku Region
The , Northeast region, or consists of the northeastern portion of Honshu, the largest island of Japan. This traditional region consists of six prefectures (''ken''): Akita, Aomori, Fukushima, Iwate, Miyagi, and Yamagata. Tōhoku retains a reputation as a remote, scenic region with a harsh climate. In the 20th century, tourism became a major industry in the Tōhoku region. History Ancient & Classical period In mythological times, the area was known as Azuma (吾妻, あづま) and corresponded to the area of Honshu occupied by the native Emishi and Ainu. The area was historically the Dewa and the Michinoku regions, a term first recorded in (654). There is some variation in modern usage of the term "Michinoku". Tōhoku's initial historical settlement occurred between the seventh and ninth centuries, well after Japanese civilization and culture had become firmly established in central and southwestern Japan. The last stronghold of the indigenous Emishi on Honshu and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lahar
A lahar (, from jv, ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water. The material flows down from a volcano, typically along a river valley. Lahars are extremely destructive: they can flow tens of metres per second, they have been known to be up to deep, and large flows tend to destroy any structures in their path. Notable lahars include those at Mount Pinatubo and Nevado del Ruiz, the latter of which killed thousands of people in the town of Armero. Etymology The word ''lahar'' is of Javanese origin. Berend George Escher introduced it as a geological term in 1922. Description The word ''lahar'' is a general term for a flowing mixture of water and pyroclastic debris. It does not refer to a particular rheology or sediment concentration. Lahars can occur as normal stream flows (sediment concentration of less than 30%), hyper-concentrated stream flows (sediment concentration between 30 and 60% ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyroclastic Flow
A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of but is capable of reaching speeds up to . The gases and tephra can reach temperatures of about . Pyroclastic flows are the most deadly of all volcanic hazards and are produced as a result of certain explosive eruptions; they normally touch the ground and hurtle downhill, or spread laterally under gravity. Their speed depends upon the density of the current, the volcanic output rate, and the gradient of the slope. Origin of term The word ''pyroclast'' is derived from the Greek (''pýr''), meaning "fire", and (''klastós''), meaning "broken in pieces". A name for pyroclastic flows which glow red in the dark is (French, "burning cloud"); this was notably used to describe the disastrous 1902 eruption of Mount Pelée on Martinique, a French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamato Takeru
, originally , was a Japanese semi-legendary prince of the Yamato dynasty, son of Emperor Keikō, who is traditionally counted as the 12th Emperor of Japan. His name written in kanji can vary, in the '' Nihon Shoki'' it is spelled 日本武尊 and in the ''Kojiki'' it is 倭建命. He was also the predecessor of Takeda ryu. The story of his life and death are told principally in the Japanese chronicles in the late 14th century ''Kojiki'' (712) and '' Nihon Shoki'' (720), but also mentioned in ''Kogo Shūi'' (807) and some histories like the (721). One of his sons became Emperor Chūai, the 14th Emperor of Japan. His history is uncertain but based on the chronicles his life can be calculated. He was born circa 72 and died in 114. Details are different between the two books, and the version in ''Kojiki'' is assumed to be loyal to the older form of this legend. Legendary narrative Prince Takeru slew his elder brother . His father, the emperor Keikō, feared his brutal temper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shinto Shrine
A is a structure whose main purpose is to house ("enshrine") one or more ''kami'', the deities of the Shinto religion. Overview Structurally, a Shinto shrine typically comprises several buildings. The '' honden''Also called (本殿, meaning: "main hall") is where a shrine's patron ''kami'' is/are enshrined.Iwanami Japanese dictionary The ''honden'' may be absent in cases where a shrine stands on or near a sacred mountain, tree, or other object which can be worshipped directly or in cases where a shrine possesses either an altar-like structure, called a ''himorogi,'' or an object believed to be capable of attracting spirits, called a ''yorishiro,'' which can also serve as direct bonds to a ''kami''. There may be a and other structures as well. Although only one word ("shrine") is used in English, in Japanese, Shinto shrines may carry any one of many different, non-equivalent names like ''gongen'', ''-gū'', ''jinja'', ''jingū'', ''mori'', ''myōjin'', ''-sha'', ''taisha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emishi
The (also called Ebisu and Ezo), written with Chinese characters that literally mean "shrimp barbarians," constituted an ancient ethnic group of people who lived in parts of Honshū, especially in the Tōhoku region, referred to as in contemporary sources. The first mention of the Emishi in literature that can be corroborated with outside sources dates to the 5th century AD, in which they are referred to as (毛人 - "hairy people") in Chinese records. Some Emishi tribes resisted the rule of various Japanese Emperors during the Asuka, Nara and early Heian periods (7th–10th centuries AD). The origin of the Emishi is disputed. They are often thought to have descended from some tribes of the Jōmon people. Some historians believe that they were related to the Ainu people, but others disagree with this theory and see them as a completely distinct ethnicity.Aston, W.G., trans. Nihongi: Chronicles of Japan from the Earliest Times to AD 697. Tokyo: Charles E.Tuttle Co., 1972 (r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sakanoue Tamuramaro
was a court noble, general and ''shōgun'' of the early Heian period of Japan. He served as Dainagon, Minister of War and ''Ukon'e no Taisho'' (Major Captain of the Right Division of Inner Palace Guards). He held the ''kabane'' of Ōsukune and the court rank of Junior Second Rank and was awarded the Order of Second Class. He was the son of Sakanoue no Karitamaro. Military career Serving Emperor Kanmu, Tamuramaro was appointed ''shōgun'' and given the task of conquering the Emishi (蝦夷征伐 ''Emishi Seibatsu''), a people native to the north of Honshū, which he subjugated. Recent evidence suggests that a migration of Emishi from northern Honshū to Hokkaidō took place sometime between the seventh and eighth centuries, perhaps as a direct result of this policy that pre-dated Tamuramaro's appointment. However, many Emishi remained in the Tōhoku region as subjects of the expanding Japanese Empire and later established independent Fushu domains. After Emperor Kanmu's death, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamato Period
The is the period of Japanese history when the Imperial court ruled from modern-day Nara Prefecture, then known as Yamato Province. While conventionally assigned to the period 250–710, including both the Kofun period (–538) and the Asuka period (538–710), the actual start of Yamato rule is disputed. The Yamato court's supremacy was challenged during the Kofun period by other polities centered in various parts of Japan. What is certain is that Yamato clans had major advantages over their neighbouring clans in the 6th century. This period is divided by the relocation of the capital to Asuka, in modern Nara Prefecture. However, the Kofun period is an archaeological period while the Asuka period is a historical period. Therefore, many think of this as an old division and this concept of period division is no longer applicable. At the era of Prince Shōtoku in the early 7th century, a new constitution was prescribed for Japan based on the Chinese model. After the fall of B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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