…When a river with a strong erosive power continues to erode its valley head, crosses the watershed and invades the neighboring watershed, reaching its course, the neighboring river upstream from that point will flow into the river valley that it invaded. This phenomenon is called river capture piracy. River capture brings about a sudden watershed shift, completely changing the conditions of the river course downstream of the captured point. … *Some explanations of terms that mention "piracy" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…浸食力の大きい河川が谷頭浸食を続け,それまでの分水界を越えて隣の流域に侵入し,その流路に達した場合,その地点より上流の隣の河流は,侵入してきた河谷へと注ぐことになる。このような現象を河川の争奪piracyと呼ぶ。河川の争奪は急激な分水界の移動をもたらし,争奪された地点より下流側の流路の状況を一変させる。… ※「piracy」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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