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A river mouth is the part of a river that flows into a lake, reservoir or ocean ==Water motion== The water from a river can enter the receiving body in a variety of different ways.〔Hogg C.A.R. (2014), The flow of rivers into lakes:experiments and models PhD thesis. University of Cambridge url: https://www.repository.cam.ac.uk/handle/1810/245315〕 The motion of the river mainly depends on the relative density of the river compared to the receiving water and any ambient motion in the receiving water, such as tides or seiches. If the river water is denser than the surface of the receiving water, the river water will plunge below the surface at the plunge curve. The river water will then either form an underflow or an interflow within the lake. If the river water is lighter than the receiving water, as is typically the case when fresh river water flows into the sea, the river water will float along the surface of the receiving water as an overflow. Alongside these advective transports, inflowing water will also diffuse. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「river mouth」の詳細全文を読む スポンサード リンク
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