WorldCat Identities

Lagadec, Lilly-Rose

Works: 2 works in 2 publications in 2 languages and 4 library holdings
Roles: Author
Publication Timeline
Most widely held works by Lilly-Rose Lagadec
A method to use proxy data of runoff-related impacts for the evaluation of a model mapping intense storm runoff hazard: application to the railway context by Isabelle Braud( )

1 edition published in 2020 in English and held by 2 WorldCat member libraries worldwide

Evaluation et développement de la méthode IRIP de cartographie du ruissellement. Application au contexte ferroviaire by Lilly-Rose Lagadec( )

1 edition published in 2017 in French and held by 2 WorldCat member libraries worldwide

Surface runoff is the source of severe hazards such as floods, erosion or mudflows. Railways can disturb natural surface water flow path, which can generate accelerated deterioration of the infrastructure, or the destruction of railway elements, such as the roadbed or the embankments. The IRIP method 'Indicator of Intense Pluvial Runoff' (French acronym) allows mapping surface runoff through three maps, generation, transfer and accumulation. The IRIP method aims to be simple and reliable, in order to be used on all types of lands, without calibration stage. As for others surface runoff models, the IRIP method evaluation faces the lack of data. However, evaluation is a crucial stage for the development of models. In the perspective of an operational use, or simply for the model development, it is essential to estimate the value and the reliability of the model outputs. The thesis objective is to provide an evaluation method using surface runoff impacts on railways. Difficulties lie in the fact that data to be compared differ in terms of form and content. Moreover, the infrastructure vulnerability must be characterized. The proposed evaluation method is based on the computation of contingency tables and of verification indicators, together with detailed analysis of specific impacts. After an estimation of the IRIP method performance, further developments can be tested and evaluated thanks to the proposed evaluation method. Finally, maps comprehensibility is enhanced, while preserving satisfying performance scores. By applying the IRIP method to operational contexts, it has been shown how the IRIP method can be used as a tool in expert appraisals. Different tasks of the risk management process have been studied such as risk analysis on railways, post-event investigation or the realisation of regulatory zonings. More generally, this thesis contributes to improve knowledge about surface runoff and provide methods for improving the risk management
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