Physical Model and Revision of Theoretical Runup

Abstract

Several formulations deduced from empirical studies are available for runup estimation. Scattering is high when applied to practical cases. Through a state of the art best formulations are chosen. These equations are also studied in a physical model carried out in the Laboratory for Maritime Experimentation of CEDEX with three beaches with slopes 1/20, 1/30 and 1/50 and with sand bed. The performance of each formulation is discussed. A new formulation is proposed in order to give more weight to the beach slope thus reducing scatter.

A model chain approach for coastal inundation: Application to the bay of Alghero

“…Such procedure implies that wave conditions have to be first propagated towards the shore to evaluate shallow-water parameters and afterwards to compute runup accordingly, leading to more reliable runup expected value estimates in the case of extreme events (Di Risio et al, 2017;De Leo et al, 2018). In order to assess the potentially flooded areas related to specific storm conditions, the main parameter to be considered is the runup, defined as the seawater upper limit reached at a shoreline (de la Peña et al, 2012). Different approaches can be used for runup estimation.…”

Comparative Analysis of Coastal Flooding Vulnerability and Hazard Assessment at National Scale

“…The first empirical formulations rely on the hypothesis of regular waves impinging the shore (e.g., [23][24][25][26]), based on physical model tests. Afterwards, irregular wave runup was investigated in order to extend the formulation to real-world sea states and natural beaches (e.g., [27][28][29][30][31][32]). …”