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Magnitude and frequency controlling fluvial sedimentary systems; issues, contributions and challenges



Magnitude and frequency controlling fluvial sedimentary systems; issues, contributions and challenges



IAHS-AISH Publication 276(Pages 355-362



This paper reviews the theme entitled "Variability: magnitude and frequency: controlling sedimentary systems. Understanding the effects of temporal and spatial variation on our river systems is key to their management." The paper considers the magnitude-frequency concept in the light of the theoretical problems with defining "important" flows. These are related to conventional wisdom where work is defined as long-term sediment transport and/or "irreparable" modifications to the landscape, and where hydrological seasonality of rivers means that rivers adjust to multi-scale discharges. It is argued that the magnitude-frequency debate is a useful tool around which the issue of "important" flows can move forward. These concepts are related to the 10 papers presented in this theme which are used to provide the context for demonstrating that it is only by adopting a scale-sensitive approach may we adequately assess the effects of spatial and temporal variations on our river systems that are key to their management.

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Accession: 019361349

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