Design method for high-resolution fully distributed hydrological model TOPX

A fully distributed, hydrological model technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as large data volume, crash, large number of DEM grids, etc.

Inactive Publication Date: 2012-06-20
NANJING UNIV
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Problems solved by technology

This model can easily and efficiently process DEM data, improve the efficiency of topographic index, and solve the problem of TOPX model in the case of high-resolution research watersheds. The number of DEM grids is large, the amount of dat

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  • Design method for high-resolution fully distributed hydrological model TOPX
  • Design method for high-resolution fully distributed hydrological model TOPX
  • Design method for high-resolution fully distributed hydrological model TOPX

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Embodiment

[0096] Linyi River Basin, longitude 117.35°~118.74°, latitude 34.98°~36.30°. The terrain is undulating and the altitude spans from 57m to 1125m. The climate of Linyi Basin belongs to the typical warm temperate continental monsoon climate. Winter is cold, dry and windy, with little precipitation; summer is hot and rainy under the influence of subtropical high pressure; spring and autumn are mild. According to statistics for many years, the average temperature in the basin is 11.8°C to 13.3°C, the average annual evaporation is 839mm, and the average annual precipitation is 830mm. The annual precipitation is mainly concentrated in summer, and there are many and strong rainstorms. It is one of the rainstorm centers in Shandong Province. , with large interannual variations. The annual average natural river runoff is about 3.016 billion cubic meters. The mountains, hills, and plains of the basin each account for one-third of the total area. Soil types mainly include leached cinn...

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Abstract

The invention discloses a design method for a high-resolution fully distributed hydrological model TOPX, which belongs to the field of design methods for fully distributed hydrological models. The design method is combined with a new topologic index computational method, and has a topologic index scale transform mechanism. The design method includes steps of A), preparing data of a TOPX model of the high-resolution fully distributed hydrological model; B), computing topologic indexes of the high-resolution fully distributed hydrological model TOPX; C), computing runoff generation of the TOPX model of the high-resolution fully distributed hydrological model; D),computing soil humidity of the TOPX model of the high-resolution fully distributed hydrological model; E), computing confluence of the TOPX model of the high-resolution fully distributed hydrological model; and F), obtaining testing results of the TOPX model of the high-resolution fully distributed hydrological model and analysis of the testing results. The design method has the advantages that DEM (digital evaluation model) data can be simply and effectively processed, topologic index efficiency is improved, and applicability of the TOPX model in a high-resolution DEM field can be effectively enhanced.

Description

technical field [0001] The invention relates to a fully distributed hydrological model design method combined with a new topographic index, specifically a TOPX model that considers the concept of topographic index and the water balance idea of ​​the Xin'anjiang model, combined with the calculation of the new topographic index The method is to establish a design method for a high-resolution fully distributed hydrological model TOPX coupled with a new topographic index calculation method with a topographic index scale conversion mechanism. Background technique [0002] The hydrological process is a very complex circulation phenomenon of the atmosphere, land surface and groundwater, and the watershed hydrological model is an effective tool for hydrological scientific research. The so-called watershed hydrological model is the process of describing and simulating the hydrological cycle with mathematical methods, that is, the watershed is generalized into a system, the precipitat...

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Application Information

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IPC IPC(8): G06F17/50
CPCY02A10/40
Inventor 张万昌雍斌邵月红
Owner NANJING UNIV
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