Repository logo
  • Log In
    New user? Click here to register.Have you forgotten your password?
University College Dublin
  • Colleges & Schools
  • Statistics
  • All of DSpace
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. College of Engineering & Architecture
  3. School of Civil Engineering
  4. Civil Engineering Research Collection
  5. Coupling system model with fuzzy logic rules for use in runoff and total phosphorus load prediction in a catchment
 
  • Details
Options

Coupling system model with fuzzy logic rules for use in runoff and total phosphorus load prediction in a catchment

File(s)
FileDescriptionSizeFormat
Download 20.pdf83.96 KB
Author(s)
Nasr, Ahmed Elssidig 
Bruen, Michael 
Uri
http://hdl.handle.net/10197/2279
Date Issued
May 2007
Date Available
03T13:28:20Z August 2010
Abstract
Tackling the problem of eutrophication in fresh waters is at the top of the agenda for the implementation of the Water Framework Directive (WFD) in Europe. The problem is caused primarily by an increase in phosphorus loading from diffuse sources. Therefore there is a need to apply appropriate measures, which are able to reduce the phosphorus diffuse pollution, at a catchment scale in each River Basin District (RBD). As the implementation of such measures disturbs the existing system in the catchment it is important to be able to predict their impact and this requires a reliable mathematical model to represent the system. In this study, a new, lumped catchment, methodology to improve on an existing diffuse phosphorus pollution model, the Grid Oriented Phosphorus Component (GOPC) model, is proposed. This methodology consists of two elements; (i) the Soil Moisture Accounting and Routing (SMAR) hydrological model was used to provide the required hydrological variables to the GOPC model; and (ii) fuzzy logic rules were formulated with the notion that each rule corresponds to a sub-model representing a particular hydrological behaviour in the catchment and the combined results of all rules give the total response. Sixteen modelling cases, each of which uses different numbers of fuzzy sub-sets for the rainfall and the evaporation, were compared for their discharge and total phosphorus (TP) simulations in a catchment in Northern Ireland. The comparison was based on the validation results as they allow testing the applicability of the models for conditions different from those used in the calibration period. Using 2 fuzzy sub-sets for the rainfall and a single fuzzy sub-set for the evaporation produced the best simulation for the discharge whereas the best TP simulation was obtained from the case of 4 rainfall fuzzy sub-sets and 3 evaporation fuzzy sub-sets.
Sponsorship
Other funder
Other Sponsorship
Environmental Protection Agency
Type of Material
Conference Publication
Keywords
  • Runoff

  • Phosphorus

  • Modelling

  • GOPC

  • SMAR

  • Fuzzy rules

Subject – LCSH
Water--Phosphorus content
Runoff--Computer programs
Fuzzy logic
Hydrologic models
Language
English
Status of Item
Peer reviewed
Description
Presented at the 7th International Water Association Symposium on Systems Analysis and Integrated Assessment in Water Management, Washington, D.C., 7-9 May 2007
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-sa/1.0/
Owning collection
Civil Engineering Research Collection
Views
1898
Acquisition Date
Feb 5, 2023
View Details
Downloads
825
Last Month
762
Acquisition Date
Feb 5, 2023
View Details
google-scholar
University College Dublin Research Repository UCD
The Library, University College Dublin, Belfield, Dublin 4
Phone: +353 (0)1 716 7583
Fax: +353 (0)1 283 7667
Email: mailto:research.repository@ucd.ie
Guide: http://libguides.ucd.ie/rru

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement