曹娥江径流特性及其对河口冲淤的影响

Runoff characteristics of Cao'e River and its effect on processes of the estuary.

曹娥江径流具有浙闽山溪性强潮河口的若干特征 ,径流年际、年内变幅较大 ,洪水暴涨暴落 ,洪枯比极大 ,年内存在两个汛期 ,即梅汛期和台风汛期 .根据曹娥江径流特性 ,本文讨论了曹娥江河口河床洪冲枯淤变化特性 。

As other hilly macro tidal estuaries located in Zhejiang and Fujiang Provinces, the runoff of the Cao'e River shows some characteristics, e.g.,it varies greatly yearly and monthly, flood level rapidly rises and drops, the ratio of peak discharge and dry discharge is quite large, and there are two flood seasons, namely the seasons of plum rains and typhoon. Based on runoff characteristics of the river, this paper discussed the feature of erosion in flood season and deposition in dry season in the Cao'e estuary, the indirect effect of the runoff on tide, and the effect of the runoff on the outlet orientation in the outside area of the estuary.