Watershed hydrological model design method based on storage capacity curve and TOPMODEL

A water storage capacity and design method technology, applied in calculation, special data processing applications, instruments, etc., can solve the inability to accurately describe the hydrological process of the land surface and shallow surface, uneven soil moisture space, and parameterized schemes for flow generation and confluence too simple

Inactive Publication Date: 2011-04-27
NANJING UNIV
View PDF2 Cites 69 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a series of problems arise: spatial differences in precipitation, underlying surface conditions, topography, etc. cannot be reflected in hydrological responses
Compared with the TOPMODEL and Xin'anjiang (or VIC) models, SWB has in common that it can describe the spatial heterogeneity of soil...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Watershed hydrological model design method based on storage capacity curve and TOPMODEL
  • Watershed hydrological model design method based on storage capacity curve and TOPMODEL
  • Watershed hydrological model design method based on storage capacity curve and TOPMODEL

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0122] The catchment area of ​​Youshui Street in the small watershed is about 908km 2 , which is located in the central part of southern Shaanxi, at the border of Ankang and Hanzhong in Shaanxi Province. The control station is located at the Youshui Street Hydrological Station (33°17′N, 107°46′E) in the Youshui River Basin, a tributary of the Han River. The landform conditions in the basin are complex, the climate changes are diverse, and the vertical differences are obvious. It is a typical subtropical humid climate zone, with an average temperature change between 7.7-15.7°C and annual precipitation changes between 730-1230mm. The soil type is relatively simple, mainly including yellow-cinnamon soil and yellow-brown soil, etc. The soil texture is mainly mountainous soil with large particles. The altitude range of the study area is 425-2960m, and there are many types of plants. The distribution of plants is dominated by temperate components. It has the natural characteristics...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a watershed hydrological model design method based on a storage capacity curve and a TOPMODEL, which comprises the following steps: calculating surface runoff yield; calculating subsurface runoff yield; calculating evapotranspiration; applying a water balance equation; establishing a convergence mechanism; generating isochrones; dynamically and visually expressing soil moisture; and coupling with a Noah land surface model (Noah LSM). The method has a high simulation deterministic coefficient, is advantageous over a semi-distributed model TOPMODEL, a Xinanjiang model and distributed hydrological models such as an engineering and science summer institute (ESSI) model, a hydrologic engineering center hydrologic modeling system (HEC-HMS) model and a soil and water assessment tool (SWAT) model in the simulation of a daily runoff process and the simulation of a flood process, and overcomes the drawback that the conventional watershed hydrological model is usually inapplicable to hydrological process accurate simulation under large-scale, arid and semiarid conditions. The model of the invention can be successfully coupled with Noah LSM and improves the rainfall, soil moisture and runoff broadcasting capacity of a service weather research forecast mode, namely global/regional assimiliation prediction system (GRAPES)-mesoscale(MESO).

Description

technical field [0001] The design method of the semi-distributed hydrological model of the present invention is more specifically the design method of the watershed hydrological model based on the water storage capacity curve and TOPMODEL. Background technique [0002] TOPMODEL is a terrain-based semi-distributed hydrological model proposed by Beven and Kirkby in 1979. Its main feature is to use the watershed terrain index (lnα / tanβ) as an index of hydrological similarity. points, have the same hydrological response to rainfall. As a result of this assumption, the topography of a watershed can be represented by the spatial distribution of topographic indices. Points with larger Topographic Index values ​​will be the first to saturate, thus implying areas of potential surface and subsurface runoff production. The change of runoff area caused by wet or dry watershed can be represented by the spatial distribution of topographic index. [0003] Topography is a very important ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
CPCY02A10/40
Inventor 张万昌徐精文
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap