Estimation of instantaneous peak flows from maximum mean daily flows using the HBV hydrological model

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• 作者：J. Ding ; M. Wallner ; H. Mü ; ller and U. Haberlandt
• 关键词：model calibration ; instantaneous peak flow (IPF) ; maximum mean daily flow (MDF) ; hydrological modelling ; rainfall disaggregation model ; Aller-Leine catchment ; Germany
• 刊名：Hydrological Processes
• 出版年：2016
• 出版时间：30 April 2016
• 年：2016
• 卷：30
• 期：9
• 页码：1431-1448
• 全文大小：3801K
• ISSN：1099-1085

文摘

The record length and quality of instantaneous peak flows (IPFs) have a great influence on flood design, but these high resolution flow data are not always available. The primary aim of this study is to compare different strategies to derive frequency distributions of IPFs using the Hydrologiska Byråns Vattenbalansavdelning (HBV) hydrologic model. The model is operated on a daily and an hourly time step for 18 catchments in the Aller-Leine basin, Germany. Subsequently, general extreme value (GEV) distributions are fitted to the simulated annual series of daily and hourly extreme flows. The resulting maximum mean daily flow (MDF) quantiles from daily simulations are transferred into IPF quantiles using a multiple regression model, which enables a direct comparison with the simulated hourly quantiles. As long climate records with a high temporal resolution are not available, the hourly simulations require a disaggregation of the daily rainfall. Additionally, two calibrations strategies are applied: (1) a calibration on flow statistics; (2) a calibration on hydrographs.