Chapitre 2 : régimes et hydrologie régionale = Chapter 2 : regimes and regional hydrology

Abstract

This chapter describes a number of research areas within the theme of regional hydrology, carried out in the FRIEND project. The first three papers come from the European FRIEND projects. Arnell and Shorthouse summarise research into spatial patterns in variability in European hydrological behaviour. Stanescu and Unguraneau build upon work described in the 1993 FRIEND report and elsewhere to characterise runoff regime types in central and southern Europe. Krasovskaia and Gottschalk extend their work on runoff regimes. The next three papers describe research undertaken in the African FRIEND projects. Servat et al focus on tropical regimes and climatic trends in west and central Africa. Mahé et al explore hydrological regionalisation in west and central Africa, at two scales. Laraque and Orange describe a study into variations in flows in major rivers in the Congo Zaire catchment. The last papers in the chapter take a more generic approach to regional hydrology, illustrating some regional hydrological annalysis methods with examples from Europe, and prepared inside the european FRIEND Groups (NEF and AMHY). Galea and Prudhomme describe a method for transferring information on hydrological variability from gauged to ungauged catchments across a region. Leblois and Sauquet present results from an investigation into techniques for mapping runoff in south east France. Finally, Van der Wateren de Hoog shows that the sensibility of a catchment to climatic variability is, for a given climate, dependant on catchment storage properties.