Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for forecasting monthly runoff through secondary coupling under condition of data shortage

A runoff and data technology, applied in the field of secondary coupled monthly runoff forecasting, can solve problems such as inability to effectively predict basin hydrological data

Inactive Publication Date: 2014-02-12
HOHAI UNIV
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: The present invention provides a method for forecasting secondary coupling monthly runoff in the case of data shortage in view of the defect that the hydrological data of the basin cannot be effectively predicted in the case of data shortage in the prior art

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
  • Method for forecasting monthly runoff through secondary coupling under condition of data shortage
  • Method for forecasting monthly runoff through secondary coupling under condition of data shortage
  • Method for forecasting monthly runoff through secondary coupling under condition of data shortage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] The Heihe River Basin is the second largest inland watershed in Northwest my country, located in the middle of the Hexi Corridor, roughly between 98°-101°30′E, 38°-42°N. The Heihe River is 821 kilometers long from its source to Juyan Sea, spanning three different natural environment units, with a drainage area of ​​about 142,900 square kilometers. The upper reaches of the Heigan River above Yingluo Gorge are 313 km long and the drainage area is 10,000 km 2 , is the main flow-producing area of ​​the Heihe River, with an annual average temperature of 1.5-2°C, an annual precipitation of more than 200 mm, with a maximum of 700 mm, a relative humidity of about 60%, and an evaporation of about 700 mm. It is a transition zone from agriculture to animal husbandry. The middle reaches from Yingluo Gorge to Zhengyi Gorge, the river course is 183km long and the drainage area is 23,400km 2 , the area is rich in light and heat resources, but it is severely arid, relying on the Heihe...

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 discloses a method for forecasting monthly runoff through secondary coupling under the condition of data shortage. The number of structure parameters of a coupling model is small, the structure of the coupling model is simple, the computational process is not limited by the requirement for the accuracy of calculated length, topographic data and meteorological data of hydrologic data, the realness of a model system in simulating a real hydrologic process is guaranteed by carrying out model coupling on a GRNN model and other physical models, and errors caused by the adoption of a large number of empirical formulas and setup parameters are effectively avoided; a traditional time series ARMA model is modified, and a seasonal ARMA model is applied to an extension technology for hydrologic data series; data coupling is carried out on the coupling model and monthly runoff data extended through the seasonal ARMA model to determine the structure and the parameters of the coupling model so that a coupled GRNN model acquired after secondary coupling can still guarantee the accuracy in simulating the runoff of a drainage basin of which hydrologic data are relatively insufficient, and therefore the method has low dependency on the historical hydrologic data and can effectively guarantee the practicality and applicability of the coupling model system.

Description

technical field [0001] The invention belongs to the field of multiple coupling design methods for hydrological forecasting, and in particular relates to a secondary coupling monthly runoff forecasting method under the condition of data shortage. Background technique [0002] Hydrological forecasting is an important part of hydrology. It is a hydrological discipline based on the objective description of actual hydrological phenomena and using the measured data of hydrology and meteorology to predict the future changes of hydrological factors. Forecasting the inflow of water in the basin is a necessary work before the rational allocation of water resources in the basin and reservoirs. Reliable monthly runoff forecasting is particularly important for multi-functional scheduling of reservoirs. [0003] In the hydrological runoff forecasting model, according to different modeling methods, it can be divided into conceptual model, distributed model and black box model. The first t...

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): G06Q10/04G06Q50/02
CPCY02A90/10
Inventor 尹笋唐德善陈伟伟陆姗姗丁亿凡
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com