Basic flow segmentation method and device based on seasonal conductivity data correction

Abstract

The invention discloses a base flow segmentation method and device based on seasonal conductivity data correction, and the method comprises the steps: collecting data, including daily runoff and conductivity data; performing base flow segmentation by using a CMB method to obtain a day-based flow, and taking a segmentation result as a standard for subsequent ECK method parameter correction; correcting ECK method parameters year by year and season according to a CMB method segmentation result, taking day-based flow data obtained by the CMB method as a standard, searching an ECK method parameter combination enabling a basic flow calculation error to be minimum, and obtaining an optimal parameter combination in a wet season and a dry season; and carrying out base flow segmentation calculation by utilizing the corrected ECK method optimal parameter combination. According to the method, the advantages of the CMB method and the ECK method are fully utilized, the accuracy and reliability of the base flow segmentation result can be improved, the data sample requirement can be reduced, and the purposes of high resolution and low data are achieved.

Description

technical field [0001] The invention relates to the technical field of river base flow division, in particular to a base flow division method and device based on the correction of seasonal electrical conductivity data. Background technique [0002] The division of river base flow is to divide the river runoff by the proportion of surface runoff and base flow. The improvement and research of the base flow segmentation method has gradually become a hot topic in recent years. Continuously improving the convenience and accuracy of the base flow segmentation method, mastering the eigenvalues ​​of rivers and watersheds and the relationship between various hydrological elements is of great significance for the calculation of runoff and flow, hydrological simulation, etc. Agricultural water supply planning, water security, ecological environmental protection and other aspects are of great significance. [0003] At present, the main base flow segmentation methods are generally divi...

AI Technical Summary

Problems solved by technology

Its advantage is that the operation is relatively convenient, and the accuracy is within an acceptable range; the disadvantage is that the reliability of the theoretical basis of the segmentation method and the accuracy of the segmentation results need to be further improved

The CMB method has high segmentation accuracy and clear physical meaning of parameters, but the operation is difficult and costly

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