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Hydrological model parameter spatial scale effect analysis method

A hydrological model and parameter space technology, applied in special data processing applications, ICT adaptation, climate change adaptation, etc., can solve problems such as the research on the spatial scale effect of parameters of few hydrological models, and achieve the effect of strong engineering significance

Active Publication Date: 2019-03-19
HOHAI UNIV
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Problems solved by technology

[0004] However, it is worth noting that most of the above research is on the scale of hydrological variables, and there are few studies on the spatial scale effect of hydrological model parameters.

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  • Hydrological model parameter spatial scale effect analysis method
  • Hydrological model parameter spatial scale effect analysis method
  • Hydrological model parameter spatial scale effect analysis method

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[0034] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0035] Below in conjunction with example the present invention will be further described.

[0036] The 5-year daily rainfall, daily evaporation, daily discharge and other data of each rainfall station and hydrological station in a certain watershed, taking the Xin'anjiang model as an example, according to the method of the present invention, the process of analyzing the spatial scale effect of the Xin'anjiang model parameters in this watershed is as follows:

[0037] (1) The Xin'anjiang model parameters are mainly composed of four parts. The evapotranspiration calculation model parameters include KC (watershed evapotranspiration conversion coefficient), WUM (upper layer tension water capacity), WLM (lower layer tension water capacity), C (d...

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Abstract

The invention provides a hydrological model parameter spatial scale effect analysis method, and belongs to the field of hydrological data analysis. The method comprises the following specific steps: selecting a research area, and selecting a research sub-basin in the research area; collecting and arranging DEM data and hydrometeorological data of the sub-basins, constructing a basin hydrological model, and calibrating model parameters of the sub-basins; calculating the variance of each sub-basin model parameter, and selecting a space sensitive parameter according to the variance; drawing a relation curve of the space sensitive parameters and the basin area, selecting an appropriate line type according to relation curve characteristics, and finding out a quantitative relation between the space sensitive parameters and the basin area; and judging whether the space sensitive parameter has scale invariance along with the change of the space scale according to the quantitative relationshipbetween the space sensitive parameter and the basin area. According to the method, the spatial scale effect of hydrological model parameters is analyzed, support can be provided for solving the problem of hydrological model parameter determination in a data-free area, and the engineering significance is high.

Description

technical field [0001] The invention belongs to the field of hydrological data analysis, in particular to a method for analyzing the spatial scale effect of hydrological model parameters. Background technique [0002] Hydrological phenomena may show different characteristics on different temporal and spatial scales, and there is often a unified regularity hidden behind them. Studying this regularity and establishing the conversion relationship between different scales can not only deepen the understanding of hydrological processes It can also solve the problem of transferring hydrological information from areas with data to areas without data, and from one scale to another. Therefore, the study of hydrological scale has important theoretical significance and practical value. [0003] At present, there are many studies on hydrological scale issues, such as the scale analysis of the annual maximum flood peak, the scale analysis of rainfall intensity, and the scale analysis of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02A90/10
Inventor 李彬权朱畅畅梁忠民胡义明王军
Owner HOHAI UNIV
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