Qian Jiangchao water time

Qianjiang River is the mother river of Hangzhou, and it is also an important water source and traffic trunk line in Hangzhou. Tide in Qianjiang River is the periodic fluctuation of the water body in Qianjiang River under the action of tide, and the tidal change has an important influence on the hydrological environment, ecological environment and social and economic development of Qianjiang River Basin. Therefore, it is of great significance to monitor and forecast the tides in Qianjiang.

Pre-inspection method

Tidal monitoring in Qianjiang River is mainly realized by measuring the change of water level in Qianjiang River. Hangzhou Hydrological Bureau has set up two tidal stations in jiande city and Lin 'an in the upper reaches of Qianjiang River, namely Jiande Station and Lin 'an Station. At the same time, four tidal stations have been set up in Binjiang District, Jianggan District, Shangcheng District and Xiacheng District in the lower reaches of Qianjiang River, namely, Qianjiang No.1 Bridge Station, Qianjiang No.2 Bridge Station, Shangtang Station and Xiasha Station. These tide stations monitor the changes of the water level in Qianjiang River in real time through high-precision water level gauges, forming a real-time monitoring network for the tides in Qianjiang River.

data processing

In order to obtain useful tidal information, it is necessary to process the monitoring data of Qianjiang water level. The processing method mainly comprises the following steps:

1. Remove non-tidal components

The change of water level in Qianjiang River is not only affected by tides, but also by many factors such as meteorology, hydrology and topography. Therefore, it is necessary to remove non-tidal components by filtering and other methods to get pure tidal signals.

2. Analyze the tidal cycle

The period of Qian Jiangchao is mainly influenced by the gravity of the moon and the sun, which is generally about 12 hours and 25 minutes. However, due to the earth's rotation, topography and other factors, the actual tidal cycle may be biased. Therefore, it is necessary to analyze the period of Qian Jiangchao and get specific period parameters.

3. Predicting tidal changes

By analyzing the tidal period of Qianjiang River, we can get the future tidal variation law of Qianjiang River. On this basis, the tidal forecast of Qianjiang River can be carried out, which can provide reference for hydrological, ecological and socio-economic activities in Qianjiang River basin.

Application value

The monitoring and forecasting of water inflow time in Qian Jiangchao is of great significance to the hydrological environment, ecological environment and socio-economic development of Qianjiang River Basin. Specific application values include:

1. Hydrological environment

Tidal changes in the Qianjiang River have an impact on the hydrological environment in the Qianjiang River Basin. By monitoring and forecasting the tides in the Qianjiang River, the changes of the water level in the Qianjiang River can be grasped in time, which can provide reference for water conservancy projects such as flood control and drainage.

2. Ecological environment

Tidal changes in the Qianjiang River have an impact on the ecological environment of the Qianjiang River Basin. By monitoring and forecasting the tides in the Qianjiang River, we can grasp the changes of the water level in the Qianjiang River in time and provide reference for the ecological protection of the Qianjiang River basin.

3. Social and economic development

Tidal changes in the Qianjiang River have an impact on the socio-economic development of the Qianjiang River Basin. By monitoring and forecasting the tides in the Qianjiang River, we can grasp the changes of the water level in the Qianjiang River in time, and provide reference for the traffic, ports and industries along the Qianjiang River basin.