有回流的河流。它被称为[怒潮][1],例如(亚马逊河)[2]的入口。[![河口高潮][3]][3][1]:https://en.wikipedia.org/wiki/Tidal_bore [2]: https://en.wikipedia.org/wiki/Amazon_River [3]: http://i.stack.imgur.com/xPFpP.png