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Numer XXXIX (39)

Ian G. Littlewood 

Characterisation of river flow regimes for environmental and enginering hydrology: unit hydrographs for rainfall-streamflow modelling

Littlewood I.G., 2008, Characterisation of river flow regimes for environmental and enginering hydrology: unit hydrographs for rainfall-streamflow modelling, Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 5-36.

Słowa kluczowe (w języku angielskim): rainfall-streamflow modelling; unit hydrographs; regionalisation; ungauged basins; modelling time-step; base flow index (BFI); slow flow index (SFI); databases

Zarys treści w języku angielskim: Two rainfall-streamflow, unit hydrograph (UH) based, modelling methods are compared, one primarily for flood event engineering hydrology and the other mainly for time series environmental hydrology. The latter method is employed to illustrate the often-overlooked sensitivity of calibrated model parameters to data time-step. It is argued that the parameter values of other rainfall-streamflow models are similarly sensitive to data time-step, causing some of the uncertainty in model parameter regionalisation schemes. An empirical method of estimating data time-step-independent parameters is demonstrated for the time series UH-based model. Sensitivities to data time-step are compared for a well-known base flow index (BFI) and an analogous slow flow index (SFI) generated by the time series UH-based method. The impact of researchers' limited ready-access to some types of hydrometeorological data is discussed. Suggestions are made for future work.

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Zbigniew W. Kundzewicz 

Hydrological extremes in the changing world

Kundzewicz Z.W., 2008, Hydrological extremes in the changing world, Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 37-52.

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Maciej Zalewski 

Ecohydrology - framework for implementation of ecological biotechnologies in integrated water resources management (IRWM)

Zalewski M., 2008, Ecohydrology - framework for implementation of ecological biotechnologies in integrated water resources management (IRWM), Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 53-62.

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Ladislav Holko 

Hydrological characteristics of snow cover in the Western Tatra Mountains in winters 1987-2008

Holko L., 2008, Hydrological characteristics of snow cover in the Western Tatra Mountains in winters 1987-2008, Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 63-77.

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Jolanta Święchowicz 

Soil erosion on cultivated foothill slopes during extreme rainfall events in the WiŚnicz Foothills of Southern Poland

Święchowicz J., 2008, Soil erosion on cultivated foothill slopes during extreme rainfall events in the WiŚnicz Foothills of Southern Poland, Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 79-93.

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Jozef Minár 

Impact of a catastrophic wind on various types of site in the Tatra National Park

Minár J., 2008, Impact of a catastrophic wind on various types of site in the Tatra National Park, Folia Geographica ser. Geographica-Physica, vol. XXXIX (39): 95-106.

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Folia Geographica, Uniwersytet Jagielloński, Instytut Geografii i Gosopdarki Przestrzennej, ul. Gronostajowa 7, 30-387 Kraków