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Ichikawa, Chiba
240px, Ichikawa City Hall is a city in western Chiba Prefecture, Japan. , the city had an estimated population of 491,716 in 251,142 households and a population density of 8559 persons per km2. The total area of the city is . The city has a concentration of the wide-area traffic network that connects the center of Tokyo with many areas of Chiba Prefecture. Major rail routes and roads pass through the city. Geography Ichikawa is located in the northwestern part of Chiba prefecture, about 20 kilometers from the prefectural capital at Chiba and within 10 to 20 kilometers from the center of Tokyo. The western border of the city is separated from Edogawa Ward of Tokyo by the Edogawa River. The southern part of the city is an alluvial plain about two meters above sea level, and the northern part is part of the gentle Shimosa Plateau rising about 20 meters above sea level. The highest point is 30.1 meters in Satomi Park. Parts of the city are on reclaimed land at sea level. Surrou ...
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Cities Of Japan
A is a local administrative unit in Japan. Cities are ranked on the same level as and , with the difference that they are not a component of . Like other contemporary administrative units, they are defined by the Local Autonomy Law of 1947. City status Article 8 of the Local Autonomy Law sets the following conditions for a municipality to be designated as a city: *Population must generally be 50,000 or greater (原則として人口5万人以上) *At least 60% of households must be established in a central urban area (中心市街地の戸数が全戸数の6割以上) *At least 60% of households must be employed in commerce, industry or other urban occupations (商工業等の都市的業態に従事する世帯人口が全人口の6割以上) *Any other conditions set by prefectural ordinance must be satisfied (他に当該都道府県の条例で定める要件を満たしていること) The designation is approved by the prefectural governor and the Minister for Intern ...
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Population
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analysing, compiling, and publishing data regarding a population. Perspectives of various disciplines Social sciences In sociology and population geography, population refers to a group of human beings with some predefined criterion in common, such as location, Race (human categorization), race, ethnicity, nationality, or religion. Demography is a social science which entails the statistical study of populations. Ecology In ecology, a population is a group of organisms of the same species who inhabit the same particular geographical area and are capable of Sexual reproduction, interbreeding. The area of a sexual population is the area where interbreeding, inter-breeding is possible between any pai ...
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Stone Tool
A stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric (particularly Stone Age) cultures that have become extinct. Archaeologists often study such prehistoric societies, and refer to the study of stone tools as lithic analysis. Ethnoarchaeology has been a valuable research field in order to further the understanding and cultural implications of stone tool use and manufacture. Stone has been used to make a wide variety of different tools throughout history, including arrowheads, spearheads, hand axes, and querns. Stone tools may be made of either ground stone or knapped stone, the latter fashioned by a flintknapper. Knapped stone tools are made from cryptocrystalline materials such as chert or flint, radiolarite, chalcedony, obsidian, basalt, and quartzite via a process known as lithic reduction. ...
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Japanese Paleolithic
The is the period of human inhabitation in Japan predating the development of pottery, generally before 10,000 BC. The starting dates commonly given to this period are from around 40,000 BC; although any date of human presence before 35,000 BC is controversial, with artifacts supporting a pre-35,000 BC human presence on the archipelago being of questionable authenticity.
Charles T. Keally
The period extended to the beginning of the Mesolithic , or around 14,000 BC. The earliest human bones were discovered in the city of in

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Humid Subtropical Climate
A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° and are located poleward from adjacent tropical climates. It is also known as warm temperate climate in some climate classifications. Under the Köppen climate classification, ''Cfa'' and ''Cwa'' climates are either described as humid subtropical climates or warm temperate climates. This climate features mean temperature in the coldest month between (or ) and and mean temperature in the warmest month or higher. However, while some climatologists have opted to describe this climate type as a "humid subtropical climate", Köppen himself never used this term. The humid subtropical climate classification was officially created under the Trewartha climate classification. In this classification, climates are termed humid subtropical when th ...
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Edogawa, Tokyo
is a special ward located in Tokyo Metropolis, Japan. It takes its name from the Edo River that runs from north to south along the eastern edge of the ward. In English, it uses the name Edogawa City. The easternmost of the wards, it shares boundaries with the cities of Urayasu and Ichikawa in Chiba Prefecture (to the east) and with the wards of Katsushika (to the north), Sumida and Kōtō (to the west). It meets the city of Matsudo in Chiba at a point. Edogawa has a sister-city relationship with Gosford, New South Wales, Australia. Domestically, it has friendship ties with the cities of Azumino in Nagano Prefecture and Tsuruoka in Yamagata Prefecture. As of January 1, 2020, the ward has an estimated population of 695,797, and a population density of 13,925 persons per km². The total area is 49.90 km². History The ward was founded in 1937 with the merger of seven towns and villages in Minami-Katsushika District: the towns of Koiwa and Komatsugawa, and the villag ...
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Kamagaya, Chiba
is a city located in Chiba Prefecture, Japan. , the city had an estimated population of 109,941 living in 50,485 households and a population density of 5200 persons per km². The total area of the city is . Geography Kamagaya is located in the northwestern corner of Chiba Prefecture, approximately 20 kilometers from the prefectural capital of Chiba. It is located on the Shimōsa Plateau, with an elevation of seven to thirty meters above sea level. The Otsu River, which flows into Lake Teganuma, is in the north, and the Okashiwa and Nego Rivers, and the tributaries of the Ebi River, flow into Tokyo Bay, to the south. The 140th east meridian line runs through the center of the city. Neighboring municipalities Chiba Prefecture *Kashiwa *Shiroi *Matsudo * Ichikawa *Funabashi Climate Kamagaya has a humid subtropical climate (Köppen ''Cfa'') characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Kamagaya is 15.0 °C. The a ...
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Matsudo, Chiba
260px, Matsudo City Hall is a city in Chiba Prefecture, Japan. , the city had an estimated population of 498,575 in 242,981 households and a population density of 8100 persons per km². The total area of the city is . Geography Matsudo is located in the far northwestern corner of Chiba Prefecture, about 20 to 30 kilometers from the prefectural capital at Chiba and 10 to 20 kilometers from downtown Tokyo. The western border of the city is the Edo River, which flows from north to south, and most of the city is on an alluvial plain with an elevation of only around four meters above sea level, with the eastern end rising to 20 to 30 meters on the Shimōsa Plateau. The city has the approximate dimensions of 11.4 kilometers from east-to-west and 11.6 kilometers from north-to-south. Neighboring municipalities Chiba Prefecture * Ichikawa *Kashiwa *Nagareyama *Kamagaya Saitama Prefecture * Misato Tokyo * Edogawa * Katsushika Climate Matsudo has a Humid subtropical climate (Köppen ''C ...
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Funabashi, Chiba
is a city located in Chiba Prefecture, Japan. , the city had an estimated population of 644,668 in 309,238 households and a population density of . The total area of the city is . It is the Greater Tokyo Area's 7th most populated city (after passing Kawaguchi, Hachioji and Chiba), and second largest in Chiba Prefecture. Geography Funabashi is located in northwestern Chiba Prefecture approximately 20 kilometers in either direction from the prefectural capital at Chiba and downtown Tokyo. The central area forms a flat diluvial upland of the Shimōsa Plateau. The city sits at an elevation of 20 to 30 meters above sea level, and is relatively flat. The highest point is 32.3 meters in Narashino 3-chome, and the lowest point is 0.2 meters in Minatomachi 1-chome. Funabashi is crossed by the Tone River, and the small Ebi River is located entirely within city limits. Funabashi formerly had wide, shallow beaches, but much of the coast has been industrialized and transformed by reclai ...
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Urayasu, Chiba
260px, old Urayasu is a city located in Chiba Prefecture, Japan. , the city had an estimated population of 170,533 in 81,136 households and a population density of . The total area of the city is . Urayasu is best known as the home of the Tokyo Disney Resort, which opened in April 1983, and the headquarters of The Oriental Land Company. History Early history The area around Urayasu was ''tenryō'' territory within Shimōsa Province controlled directly by the Tokugawa shogunate during the Edo period. Urayasu served as an important fishing village for the Edo capitol. Until the industrialization of the city it was a major center of production of ''nori'', an edible seaweed, ''hamaguri'', and ''asari'' clams. All three are important elements of the traditional Japanese diet. Modern history After the Meiji Restoration in 1868, the area became part of Chiba Prefecture. Urayasu Village was created on April 1, 1889 under Higashikatsushika District with the establishment of the mod ...
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Alluvial Plain
An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. A floodplain is part of the process, being the smaller area over which the rivers flood at a particular period of time, whereas the alluvial plain is the larger area representing the region over which the floodplains have shifted over geological time. As the highlands erode due to weathering and water flow, the sediment from the hills is transported to the lower plain. Various creeks will carry the water further to a river, lake, bay, or ocean. As the sediments are deposited during flood conditions in the floodplain of a creek, the elevation of the floodplain will be raised. As this reduces the channel floodwater capacity, the creek will, over time, seek new, lower paths, forming a meander (a curving sinuous path). The leftover higher locations, typically natural levees at the margins o ...
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