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System approaches in fluvial geomorphology

Abstract

The fluvial system is a complex adaptive process‐response system with two main physical components, the morphological system and the cascading system. The fluvial system changes progressively through geological time, as a result of normal erosional and depositional processes. The hydrosystem integrity depends on the dynamic interactions of hydrological, geomorphological and biological processes acting in these three dimensions over a range of time‐scales. The fluvial anthroposystem theory, with human pressures ubiquitous for many centuries, rivers are reacting to multiple human pressures acting at different time‐scales and different locations within the basin. Similarity analysis and connectivity analysis are ways to study the fluvial system in a comparative manner, one focusing on single temporal and spatial‐scale components, the other on the links between components of different scales. This chapter talks about research on the Drome, the Roubion, the Eygues and the Bega river to understand the system evolution and to inform management decisions.
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halshs-01338492, version 1 (28-06-2016)

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Hervé Piégay. System approaches in fluvial geomorphology. M.G. Kondolf, H. Piégay. Tools in Fluvial Geomorphology, J. Wiley and Sons, pp.75-102, 2016, 9780470684054 / 9781118648551. ⟨10.1002/9781118648551.ch5⟩. ⟨halshs-01338492⟩
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