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1953 North Kyushu Flood
The 1953 North Kyushu flood was a flood which hit Northern Kyushu, Japan (Fukuoka Prefecture, Saga Prefecture, Kumamoto Prefecture and Ōita Prefecture) in June 1953. The flood was caused by cloudbursts and prolonged rain from the Meiyu rain front which dropped 1,000 mm (3.3 ft.) of rain over Mount Aso and Mount Hiko. This downpour resulted in the overflow of many of the surrounding rivers, such as the Chikugo River. The flood was a major disaster with 771 people dead or missing, 450,000 houses flooded, and about 1 million people affected. Due to the severity of the disaster, flood control measures along rivers in Northern Kyushu were fundamentally revised, with many of the changes still in place. The flood was not given an official name by the Japan Meteorological Agency which has resulted in it being referred to differently in a variety of sources. In Kumamoto Prefecture, In reference to the ''Shirakawa'' river which flows down from Mount Aso. or 6.26 refers to the 26 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fukuoka
is the sixth-largest city in Japan, the second-largest port city after Yokohama, and the capital city of Fukuoka Prefecture, Japan. The city is built along the shores of Hakata Bay, and has been a center of international commerce since ancient times. The area has long been considered the gateway to the country, as it is the nearest point among Japan's main islands to the Asian mainland. Although humans occupied the area since the Jomon period, some of the earliest settlers of the Yayoi period arrived in the Fukuoka area. The city rose to prominence during the Yamato period. Because of the cross-cultural exposure, and the relatively great distance from the social and political centers of Kyoto, Osaka, and later, Edo (Tokyo), Fukuoka gained a distinctive local culture and dialect that has persisted to the present. Fukuoka is the most populous city on Kyūshū island, followed by Kitakyushu. It is the largest city and metropolitan area west of Keihanshin. The city was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitakyushu
is a city located in Fukuoka Prefecture, Japan. As of June 1, 2019, Kitakyushu has an estimated population of 940,978, making it the second-largest city in both Fukuoka Prefecture and the island of Kyushu after the city of Fukuoka. It is one of Japan's 20 designated cities, one of three on Kyushu, and is divided into seven wards. Kitakyushu was formed in 1963 from a merger of municipalities centered on the historic city of Kokura, and its name literally means "North Kyushu City" in Japanese. It is located at the northernmost point of Kyushu on the Kanmon Straits, separating the island from Honshu, across from the city of Shimonoseki. Kitakyushu and Shimonoseki are connected by numerous transport links including the Kanmon Bridge and the Kanmon Tunnels. Kitakyushu's Urban Employment Area forms part of the Fukuoka-Kitakyushu Greater Metropolitan Region, which, with a population of 5,738,977 (2005-2006), is the largest metropolitan area in Japan west of the Keihanshin regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shirakawa River (Kumamoto)
The is a first-class river that runs down from Mount Aso through Kumamoto. In the past the Shirakawa River has overflowed and led to severe flooding such as during the 1953 North Kyushu flood The 1953 North Kyushu flood was a flood which hit Northern Kyushu, Japan (Fukuoka Prefecture, Saga Prefecture, Kumamoto Prefecture and Ōita Prefecture) in June 1953. The flood was caused by cloudbursts and prolonged rain from the Meiyu rain .... References Rivers of Kumamoto Prefecture Rivers of Japan {{Japan-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are simi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (slope)
The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which ''run'' is the horizontal distance (not the distance along the slope) and ''rise'' is the vertical distance. Slopes of existing physical features such as canyons and hillsides, stream and river banks and beds are often described as grades, but typically grades are used for human-made surfaces such as roads, landscape grading, roof pitches, railroads, aqueducts, and pedestrian or bicycle routes. The grade may refer to the longitudinal slope or the perpendicular cross slope. Nomenclature There are several ways to express slope: # as an ''angle'' of i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debris Flow
Debris flows are geological phenomena in which water-laden masses of soil and fragmented rock rush down mountainsides, funnel into stream channels, entrain objects in their paths, and form thick, muddy deposits on valley floors. They generally have bulk densities comparable to those of rock avalanches and other types of landslides (roughly 2000 kilograms per cubic meter), but owing to widespread sediment liquefaction caused by high pore-fluid pressures, they can flow almost as fluidly as water. Debris flows descending steep channels commonly attain speeds that surpass 10 m/s (36 km/h), although some large flows can reach speeds that are much greater. Debris flows with volumes ranging up to about 100,000 cubic meters occur frequently in mountainous regions worldwide. The largest prehistoric flows have had volumes exceeding 1 billion cubic meters (i.e., 1 cubic kilometer). As a result of their high sediment concentrations and mobility, debris flows can be very de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticyclone
An anticyclone is a weather phenomenon defined as a large-scale circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere as viewed from above (opposite to a cyclone). Effects of surface-based anticyclones include clearing skies as well as cooler, drier air. Fog can also form overnight within a region of higher pressure. Mid-tropospheric systems, such as the subtropical ridge, deflect tropical cyclones around their periphery and cause a temperature inversion inhibiting free convection near their center, building up surface-based haze under their base. Anticyclones aloft can form within warm-core lows such as tropical cyclones, due to descending cool air from the backside of upper troughs such as polar highs, or from large-scale sinking such as a subtropical ridge. The evolution of an anticyclone depends upon variables such as its size, intensity, and extent of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsushima Strait
or Eastern Channel (동수로 Dongsuro) is a channel of the Korea Strait, which lies between Korea and Japan, connecting the Sea of Japan, the Yellow Sea, and the East China Sea. The strait is the channel to the east and southeast of Tsushima Island, with the Japanese islands of Honshu to the east and northeast, and Kyushu and the Gotō Islands to the south and southeast. It is narrowest south-east of Shimono-shima, the south end of Tsushima Island proper, constricted there by nearby Iki Island, which lies wholly in the strait near the tip of Honshu. South of that point Japan's Inland Sea mingles its waters through the narrow Kanmon Strait between Honshu and Kyushu, with those of the Eastern Channel, making for some of the busiest sea lanes in the world. The Strait was the site of the decisive naval battle in the Russo-Japanese War, the Battle of Tsushima, between the Japanese and Russian navies in 1905; in which the Russian fleet was virtually destroyed.100 Battles, ''Decisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Pacific High
The North Pacific High is a semi-permanent, subtropical anticyclone located in the northeastern portion of the Pacific Ocean, located northeast of Hawaii and west of California. It is strongest during the northern hemisphere summer and shifts towards the equator during the winter, when the Aleutian Low becomes more active. It is responsible for California's typically dry summer and fall and typically wet winter and spring, as well as Hawaii's year-round trade winds. During the 2011–2017 California drought, the North Pacific High persisted longer than usual, due to a mass of warm water in the Pacific Ocean, resulting in the Ridiculously Resilient Ridge. This significantly limited the number of powerful winter storms that were able to reach California, resulting in historic drought conditions in that state for several years. See also * South Pacific High The South Pacific High is a semi-permanent subtropical anticyclone located in the southeast Pacific Ocean. The area of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakushima
is one of the Ōsumi Islands in Kagoshima Prefecture, Japan. The island, in area, has a population of 13,178. Access to the island is by hydrofoil ferry (7 or 8 times a day from Kagoshima, depending on the season), slow car ferry (once or twice a day from Kagoshima), or by air to Yakushima Airport (3 to 5 times daily from Kagoshima, once daily from Fukuoka and once daily from Osaka). Administratively, the whole island is the town of Yakushima. The town also serves neighbouring Kuchinoerabujima. The majority of the island is within the borders of the Kirishima-Yaku National Park. Yakushima's electricity is more than 50% hydroelectric, and surplus power has been used to produce hydrogen gas in an experiment by Kagoshima University. The island has been a test site for Honda's hydrogen fuel cell vehicle research. (There are no hydrogen cars stationed on the island but electric cars are run by the municipality.) World Heritage designation In 1980, an area of was designated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amami Ōshima
, also known as Amami, is the largest island in the Amami archipelago between Kyūshū and Okinawa. It is one of the Satsunan Islands. The island, 712.35 km2 in area, has a population of approximately 73,000 people. Administratively it is divided into the city of Amami, the towns of Tatsugō, Setouchi, and the villages of Uken and Yamato in Kagoshima Prefecture. Much of the island is within the borders of the Amami Guntō National Park. In 2021, it was listed as part of the serial UNESCO World Heritage Site of Amami-Ōshima Island, Tokunoshima Island, northern part of Okinawa Island, and Iriomote Island. History It is uncertain when Amami Ōshima was first settled. Stone tools indicate settlement in the Japanese Paleolithic period, and other artifacts, including pottery, indicate a constant contact with Jōmon, Yayoi and Kofun period Japan. The island is mentioned in the ancient Japanese chronicle '' Nihon Shoki'' in an entry for the year 657 AD. During the Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
