... However, river mouth ports can have problems with shallowing due to sediment from the river, siltation of waterways making it difficult for large ships to use them, and dredging for maintenance is expensive, so there are many cases where modern ports are created by using the sediment and even mountain soil to reclaim land along the coast. Such ports are called reclaimed ports, and examples of this include Japan's major ports, such as Yokohama, Kobe, Nagoya, Chiba, Sakai-Senboku, and Kitakyushu, as well as the aforementioned Tokyo Port and Osaka Port. Reclaimed ports have the advantage that ports, cities, and industrial sites can be created entirely artificially so that the ports can fully function. ... *Some of the terminology used to refer to "reclaimed ports" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… しかし,河口港では河川の流下土砂によって水深が浅くなる問題が生ずることもあり,航路の埋没によって大型船の利用がむずかしくなり,かつ維持のための浚渫(しゆんせつ)の費用が大きいことから,これらの流下土砂や,さらには山土を用いて沿岸に新たに埋立地を造成して近代港湾をつくる例が多くなってきている。このような港を埋立港湾と呼び,日本の大港湾,すなわち横浜,神戸,名古屋,千葉,堺泉北,北九州の諸港や,前述の東京港,大阪港もこの例に入る。埋立港湾は港の機能を十分に発揮できるよう,まったく人工的に港と都市,さらに工場用地を造成できる利点がある。… ※「埋立港湾」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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