青龙河土门子站冰期流量日周期规律分析

Analysis on Periodic Variation of the Daily Stream Flow of the Tamenzi Hydrologic Station on the Qinlonghe River in the Ice Age

北方河流在冬季受日温差影响，河道流量随着气温的变化呈现出周期性变化，通过对土门子水文站冰实测的日周期流量资料进行分析，试图找出其变化规律，并进一步分析出能代表日平均流量的最佳实测时间点。对于提高水文测验精度和资料质量，减少测站职工的工作强度，具有重要的意义。

As the river easily influenced by temperature difference in winter, the river channel flow changes periodically with the temperature change in northern areas In this paper, by collecting and analyzing information of daily stream flow of the Turnenzi hydrologic station on the Oinlonghe River in the ice age, we try to find out the varying law and the best measuring time of representative for the daily stream flow. It is of significance to improving meas-uring accuracy and data quality, saving time and reducing workload.