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Estimation method of mean response time of watershed groundwater based on instantaneous unit line

A response time, unit line technology, applied in water conservancy projects, water conservancy engineering equipment, buildings, etc., can solve the problem of high cost

Active Publication Date: 2019-09-24
HOHAI UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to propose a method for estimating the average response time of water basin groundwater based on instantaneous unit lines, to overcome the shortcomings of the high cost of existing technologies, to improve the utilization efficiency of existing hydrological observation data, and to reduce the average response time of existing water basin hydrology The estimated cost of

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  • Estimation method of mean response time of watershed groundwater based on instantaneous unit line
  • Estimation method of mean response time of watershed groundwater based on instantaneous unit line
  • Estimation method of mean response time of watershed groundwater based on instantaneous unit line

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[0047] The technical solutions of the present invention will be further elaborated below according to the drawings and in conjunction with the embodiments.

[0048] figure 1 It is a flow chart of the method for estimating the mean response time of watershed groundwater based on the instantaneous unit line of the present invention, figure 2 For the relative position of the basin above the Sanguankou Hydrological Station and the Jinghe River Basin in the embodiment of the present invention, the basin above the Sanguankou Hydrological Station in the Jinghe River Basin is selected as an example. This basin is located in the upper reaches of the Jinghe River Basin, with a catchment area of ​​218km 2 , belonging to semi-humid-semi-arid climate, the average annual precipitation is 606 mm, and the annual precipitation distribution is uneven in time and space, among which the precipitation in the flood season (June to September) accounts for about 60% of the annual precipitation. The...

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Abstract

The invention discloses an estimation method of the average response time of basin underground water based on instantaneous unit hydrograph, and belongs to hydrological science of geophysical sciences. According to the estimation method, in order to solve the problems of high data collection and analysis cost, bad applicability and the like of an existing evaluation method of the average responsetime of basin water based on hydrochemical information, on the basis of conventional observation data of basins, under the estimation GLUE frame that the generalized likelihood is uncertain, combinedcalibration is performed on digital filter parameters for base flow separation and parameters for describing the instantaneous unit hydrograph of the base flow input / output response relation, and theaverage response time of the basin underground water is estimated by utilizing the first moment about the origin of the instantaneous unit hydrograph. The estimation method has the advantages of simplicity and high efficiency, the estimated cost of the average response time of the basin underground water is reduced, and the utilization efficiency of hydrological observation data is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrology branch under geophysics, and in particular relates to a method for estimating the average response time of watershed groundwater based on instantaneous unit lines. Background technique [0002] The average response time of groundwater in a watershed is one of the important parameters of the groundwater hydrological process, which indicates the time required for the precipitation recharge entering the watershed at a specific moment at different locations in the watershed to be responded to in the watershed outlet flow process. It comprehensively reflects the characteristics of water distribution, storage and release in the basin-scale hydrological process. Parameters are very important. At present, water chemical information such as isotopes in precipitation and runoff are mainly used, and changes in relevant tracers in input and output fluxes are used to estimate the average response time of run...

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Application Information

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IPC IPC(8): E02B1/00
Inventor 张润润陈喜张志才高满
Owner HOHAI UNIV
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