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Japan Median Tectonic Line
, also Median Tectonic Line (MTL), is Japan's longest Fault (geology), fault system. The MTL begins near Ibaraki Prefecture, where it connects with the Itoigawa-Shizuoka Tectonic Line (ISTL) and the Fossa Magna. It runs parallel to Japan's volcanic arc, passing through central Honshū to near Nagoya, through Mikawa Bay, then through the Seto Inland Sea, Inland Sea from the Kii Channel and Naruto Strait to Shikoku along the Sadamisaki Peninsula and the Bungo Channel and Hōyo Strait to Kyūshū. The sense of motion on the MTL is right-lateral strike-slip, at a rate of about 5–10 mm/yr.Okada, A., On the Quaternary faulting along the Median Tectonic Line, in ''Median Tectonic Line'' (in Japanese with English abstract), edited by R. Sugiyama, pp. 49–86, Tokai Univ. Press, Tokyo, 1973. This sense of motion is consistent with the direction of oblique convergence at the Nankai Trough. The rate of motion on the MTL is much less than the rate of convergence at the Nankai Trough, p ...
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Itoigawa-Shizuoka Tectonic Line
, also Ito Shizu Sen (糸静線) is a major fault zone on Honshu island running from Itoigawa, Niigata Prefecture, through Lake Suwa, and on to Shizuoka in Shizuoka Prefecture. It is often confused with the Fossa Magna ("great rift"), a geological feature it forms the western boundary of. Seismic activity Recent significant earthquakes on this tectonic line include: * M5.4; 30 June 2011; epicentre near Matsumoto, Nagano; 1 death, 17 injuries. * M6.7; 22 November 2014; epicentre near Hakuba, Nagano is a village located in Nagano Prefecture, Japan. As of April 1, 2019, the village had an estimated population of 9,007 in 4267 households, and a population density of 48 persons per km2. The total area of the village is . Hakuba is located i ...; 46 injuries. Japanese-language Wikipedia entry References Geology of Japan Seismic faults of Japan Geography of Niigata Prefecture Geography of Shizuoka Prefecture Geography of Nagano Prefecture {{tectonics-stub ...
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Kyūshū
is the third-largest island of Japan's four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa and the other Ryukyu (''Nansei'') Islands). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surrounding islands. Kyushu has a land area of and a population of 14,311,224 in 2018. In ancient times, there is a theory that Kyushu was home to its own independent dynasty, where a unique, southern-influenced culture and tradition distinct from that of Honshu flourished. In the 8th-century Taihō Code reforms, Dazaifu was established as a special administrative term for the region. Geography The island is mountainous, and Japan's most active volcano, Mount Aso at , is on Kyūshū. There are many other signs of tectonic activity, including numerous areas of hot springs. The most famous of these are in Beppu, on the east shore, and around Mt. Aso in central Kyūshū. The island is separated f ...
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Kantō Plain
The , in the Kantō region of central Honshu, is the largest plain in Japan. Its 17,000 km2 covers more than half of the region extending over Tokyo, Saitama Prefecture, Kanagawa Prefecture, Chiba Prefecture, Gunma Prefecture, Tochigi Prefecture, and Ibaraki Prefecture.Encyclopedia of Japan, Kōdansha Geography The northern limit borders on the Abukuma Highlands, Mount Yamizo, Yamizo Mountain Range, Ashio Mountain Range, and a volcanic field associated with the Nasu Volcanic Belt. The western coincides with the Kantō Mountains, Kantō Mountain Range, and the southern edge is defined by the Bōsō Peninsula, the Miura Peninsula, Miura Hills, Tokyo Bay, and Sagami Bay. The Kashima Sea and Kujūkuri Beach define the eastern end of the plain. Most of its rivers originate in the northern or western mountain ranges and flow east or southeast into the Pacific Ocean, Tokyo Bay, or Sagami Bay. In the central part of the plain is the Tone River; in the northern part the Watarase Riv ...
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Saitama Prefecture
is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (January 1, 2020) and has a geographic area of 3,797 Square kilometre, km2 (1,466 Square mile, sq mi). Saitama Prefecture borders Tochigi Prefecture and Gunma Prefecture to the north, Nagano Prefecture to the west, Yamanashi Prefecture to the southwest, Tokyo to the south, Chiba Prefecture to the southeast, and Ibaraki Prefecture to the northeast. Saitama, Saitama, Saitama is the capital and largest city of Saitama Prefecture, with other major cities including Kawaguchi, Saitama, Kawaguchi, Kawagoe, Saitama, Kawagoe, and Tokorozawa, Saitama, Tokorozawa. History of Kujiki According to ''Sendai Kuji Hongi'' (), Chichibu was one of 137 provinces during the reign of Emperor Sujin. Chichibu Province was in western Saitama. The area that would become Saitama Prefecture in the 19th century is part of Musashi Provinc ...
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Gunma Prefecture
is a landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of . Gunma Prefecture borders Niigata Prefecture and Fukushima Prefecture to the north, Nagano Prefecture to the southwest, Saitama Prefecture to the south, and Tochigi Prefecture to the east. Maebashi is the capital and Takasaki is the largest city of Gunma Prefecture, with other major cities including Ōta, Gunma, Ōta, Isesaki, Gunma, Isesaki, and Kiryū, Gunma, Kiryū. Gunma Prefecture is one of only eight landlocked prefectures, located on the northwestern corner of the Kantō Plain with 14% of its total land being designated as List of national parks of Japan, natural parks. History The ancient province of Gunma was a center of horse breeding and trading activities for the newly immigrated continental peoples (or Toraijin). The arrival of horses and the remains of horse tackle coinci ...
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Shimonita, Gunma
is a List of towns in Japan, town located in Gunma Prefecture, Japan. , the town had an estimated population of 7,058 in 3,292 households, and a population density of 37 persons per km2. The total area of the town is . Shimonita is famous for its konjac and Welsh onion. Geography Shimonita is located in southwestern Gunma Prefecture bordering on Nagano Prefecture to the west. Part of the town is within the borders of the Myōgi-Arafune-Saku Kōgen Quasi-National Park. Approximately 84% of the town's total area is covered by forests. * Mountains: Mount Arafune (1423 m), Mount Inafukumi, Mount Ōgeta, Ozawadake, Kanatake, Mount Nikkura, Mount Yotsumata, Mount Monogatari, Mount Midō, Mount Myogi, Mount Monomi * Rivers: Kabura River Surrounding municipalities Gunma Prefecture *Annaka, Gunma, Annaka * Fujioka, Gunma, Fujioka * Kanna, Gunma, Kanna * Kanra, Gunma, Kanra *Nanmoku, Gunma, Nanmoku * Tomioka, Gunma, Tomioka Nagano Prefecture * Karuizawa, Nagano, Karuizawa * Saku, N ...
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Nagano Prefecture
is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Chūbu region of Honshu. Nagano Prefecture has a population of 2,007,682 () and has a geographic area of . Nagano Prefecture borders Niigata Prefecture to the north, Gunma Prefecture to the northeast, Saitama Prefecture to the east, Yamanashi Prefecture to the southeast, Shizuoka Prefecture and Aichi Prefecture to the south, and Gifu Prefecture and Toyama Prefecture to the west. Nagano (city), Nagano is the capital and largest city of Nagano Prefecture, with other major cities including Matsumoto, Nagano, Matsumoto, Ueda, Nagano, Ueda, and Iida, Nagano, Iida. Nagano Prefecture has impressive highland areas of the Japanese Alps, including most of the Hida Mountains, Kiso Mountains, and Akaishi Mountains which extend into the neighbouring prefectures. The area's mountain ranges, natural scenery, and history has gained Nagano Prefecture international recognition as a winter sports tourist de ...
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Shizuoka Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūbu region of Honshu. Shizuoka Prefecture has a population of 3,555,818 and has a geographic area of . Shizuoka Prefecture borders Kanagawa Prefecture to the east, Yamanashi Prefecture to the northeast, Nagano Prefecture to the north, and Aichi Prefecture to the west. Shizuoka (city), Shizuoka is the capital and Hamamatsu is the largest city in Shizuoka Prefecture, with other major cities including Fuji, Shizuoka, Fuji, Numazu, and Iwata, Shizuoka, Iwata. Shizuoka Prefecture is located on Japan's Pacific Ocean coast and features Suruga Bay formed by the Izu Peninsula, and Lake Hamana which is considered to be one of Japan's largest lakes. Mount Fuji, the tallest volcano in Japan and cultural icon of the country, is partially located in Shizuoka Prefecture on the border with Yamanashi Prefecture. Shizuoka Prefecture has a significant Motor vehicle, motoring heritage as the founding location of Honda, Suzuki Motor C ...
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Nojima Fault
is a fault that was responsible for the Great Hanshin earthquake of 1995 (Kobe Quake). It cuts across Awaji Island, Japan and it is a branch of the Japan Median Tectonic Line which runs the length of the southern half of Honshu island. The fault line itself and part of the damage caused by the Great Hanshin earthquake is preserved within the Nojima Fault Preservation Museum. IUGS geological heritage site In respect of it being 'the fault that caused the 1995 Kobe earthquake', the International Union of Geological Sciences The International Union of Geological Sciences (IUGS) is an international non-governmental organization devoted to global cooperation in the field of geology. As of 2023, it represents more than 1 million geoscientists around the world. About Fo ... (IUGS) included the 'Nojima Fault' in its assemblage of 100 'geological heritage sites' around the world in a listing published in October 2022. The organisation defines an IUGS Geological Heritage Site as ' ...
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Great Hanshin Earthquake
The Great Hanshin Earthquake (, ) occurred on January 17, 1995, at 05:46:53 JST in the southern part of Hyōgo Prefecture, Japan, including the region of Hanshin. It measured 6.9 on the moment magnitude scale and had a maximum intensity of 7 on the JMA Seismic Intensity Scale (XI–XII on the Modified Mercalli intensity scale). The tremors lasted for approximately 20 seconds. The focus of the earthquake was located 17 km beneath its epicenter, on the northern end of Awaji Island, 20 km away from the center of the city of Kobe. At least 5,000 people died, about 4,600 of them from Kobe. Kobe, with its population of 1.5 million, was the closest major city to the epicenter and hit by the strongest tremors. It was Japan's second deadliest earthquake in the 20th century after the 1923 Great Kantō earthquake, in which more than 105,000 people died. Earthquake Most of the largest earthquakes in Japan are caused by subduction of the Philippine Sea plate or Pac ...
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Kongō Range
The is a mountain range on the borders of Nara Prefecture, Nara and Osaka Prefectures on the island of Honshū in the southwest of central Japan. The range separates the Osaka Plain and the Nara Basin, and forms a natural place for the boundary between the prefectures. The primary mountain in the range is Mount Kongō, and is contained within the Kongō-Ikoma-Kisen Quasi-National Park. The sutra mounds of the Katsuragi 28 Shuku are scattered throughout the Kongō Range. Geography The Kongō Range is about long, from the Yamato River in the north to the Kino River in the south. East to West, it averages about wide. The mountains in the range are from to in elevation. At Chihaya Pass, the ridgeline turns west and the Izumi Mountains begin at that point. They stretch along the border between Osaka and Wakayama Prefectures. Mountains in the range Listed in order of elevation. *Mount Kongō, *Mount Yamato Katsuragi, *Iwahashi Mountain, *Mount Nijō has two peaks: **Odake, ** ...
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Active Fault
An active fault is a fault that is likely to become the source of another earthquake sometime in the future. Geologists commonly consider faults to be active if there has been movement observed or evidence of seismic activity during the last 10,000 years. * Active faulting is considered to be a geologic hazard – one related to earthquakes as a cause. Effects of movement on an active fault include strong ground motion, surface faulting, tectonic deformation, landslides and rockfalls, liquefaction, tsunamis, and seiches. Quaternary faults are those active faults that have been recognized at the surface and which have evidence of movement during the Quaternary Period. Related geological disciplines for ''active-fault'' studies include geomorphology, seismology, reflection seismology, plate tectonics, geodetics and remote sensing, risk analysis, and others. Location Active faults tend to occur in the vicinity of tectonic plate boundaries, and active fault research h ...
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