Seasonal variation characteristics and causes of sediment concentration in Qiantang River estuary

Seasonal variation characteristics of sediment concentration in Qiantang River estuary: sediment concentration increases in spring and summer, and decreases in autumn and winter.

Reason: The river has a large amount of water in spring and summer, and there are flood seasons, so the sediment concentration will also increase. In autumn and winter, the water flow is small, there is no flood season and the sediment concentration is small.

Knowledge extension: Qiantang River is the largest river in Zhejiang Province, the source of naming Liangzhe Road in Song Dynasty, and the source of Zhejiang's provincial name when it was established in the early Ming Dynasty. It starts from Xin 'anjiang in the north, with a total length of 588.73 kilometers; It starts from Ma Jinxi in the upper reaches of Qujiang River in the south, with a total length of 522.22 kilometers. From the source, it flows through southern Anhui Province and Zhejiang Province, with a drainage area of 55,058 square kilometers, and flows into the East China Sea via Hangzhou Bay.

Hope to adopt!