The elusive topic of rainfall-induced surge waves in rivers: lessons from canyon accidents

Viggiani, Giuseppe

doi:10.1080/15715124.2020.1760291

Cited by 1 publication

(1 citation statement)

References 31 publications

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“…It may be informative at this point to reflect on the representation of key controls on AWFs in theoretical models. Viggiani (2020) analysed the physical mechanism of development and propagation of surge waves (equivalent to AWF) or 'instant floods', with faster evolution than common flash floods. Differences in wave celerity are recognised as the basis for surge wave development, so that there is a tendency for the rising limb of the hydrograph to steepen because higher flows correspond to deeper and faster waves.…”

Section: Modelling Of Awf Events For Forecasting and Warningmentioning

confidence: 99%

Gauged and historical abrupt wave front floods (‘walls of water’) in Pennine rivers, northern England

Archer,

Watkiss,

Warren

et al. 2024

J Flood Risk Management

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Extremely rapid rates of rise in level and discharge in a subset of flash floods (‘abrupt wave front floods’, AWF) are separate hazards from peak level. Such flood events are investigated for Pennine catchments in northern England using both gauged and historical information. Gauged level and flow digital records at 15‐min intervals provide recent data. Historical information for 122 AWF events is extracted from a chronology of flash floods for Britain. Historical AWF events are mapped and found to occur on every major Pennine catchment; catchment descriptors are derived as a basis for assessing catchment vulnerability. We discuss the disputed origin of AWF. Using gauged data, we contrast the rising limb of AWF and ‘normal’ floods. We investigate time series of historical AWF, noting a puzzling peak in the late 19th century. Current rainfall and river monitoring does not provide a reliable basis for understanding AWF processes or for operational response and we suggest improvements. Similarly, current models for design flood estimation and forecasting do not generate the observed rapid increase in level in AWF floods.

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Section: Modelling Of Awf Events For Forecasting and Warningmentioning

confidence: 99%