A PSEUDO VALIDATION ALGORITHM FOR HYDROLOGICAL MODEL RELIABILITY ASSESSMENT

• CHIANG Shen

  Dept. of Civil Eng., Kyoto University

• TACHIKAWA Yasuto

  DPRI, Kyoto University

• TAKARA Kaoru

  DPRI, Kyoto University

Abstract

A pseudo validation algorithm, which is capable of identifying the prediction uncertainty through recognizing and quantifying the different uncertainty sources in a hydrologic model, is manipulated as an instrument for hydrological model reliability assessment. For implementation, the pseudo validation algorithm is manipulated in order to compare TOPMODEL with different vertical flux calculation components, which have been applied to two Japanese basins. An index, which originates from the Nash-Sutcliffe efficiency, named Model Structure Indicating Index (MSII), is used to quantify the model reliability under different magnitudes of input uncertainty. The results show that within a small magnitude of input uncertainty, the reliability of a five parameter TOPMODEL is worse than a six parameter TOPMODEL. However, within larger magnitudes of the input uncertainty, the reliability of the five parameter TOPMODEL is better than that of the six parameter TOPMODEL, this shows that the pseudo validation algorithm can be used as a reference for hydrological modeling.

Journal

• PROCEEDINGS OF HYDRAULIC ENGINEERING

  PROCEEDINGS OF HYDRAULIC ENGINEERING 50 103-108, 2006

  Japan Society of Civil Engineers

Keywords

• prediction uncertainty
• model validation
• TOPMODEL
• hydrologic modeling

Details

• CRID: 1390282680146283520
• NII Article ID: 130004043742
• DOI: 10.2208/prohe.50.103
• ISSN: 18849172
• ISSN: 09167374
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed