Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Storm-Induced Boulder Displacements: Inferences from Field Survey and Hydrodynamic Equations

Version 1 : Received: 29 August 2020 / Approved: 30 August 2020 / Online: 30 August 2020 (15:53:07 CEST)

A peer-reviewed article of this Preprint also exists.

Delle Rose, M.; Fidelibus, C.; Martano, P.; Orlanducci, L. Storm-Induced Boulder Displacements: Inferences from Field Surveys and Hydrodynamic Equations. Geosciences 2020, 10, 374. Delle Rose, M.; Fidelibus, C.; Martano, P.; Orlanducci, L. Storm-Induced Boulder Displacements: Inferences from Field Surveys and Hydrodynamic Equations. Geosciences 2020, 10, 374.

Journal reference: Geosciences 2020, 10, 374
DOI: 10.3390/geosciences10090374

Abstract

The storm of November 12th-13th, 2019 provoked the displacements of boulders in a central Mediterranean rocky coast; with reference to a selected area, prone to the boulder production and geomorphologically monitored for years, a field-oriented study approach was applied for the phenomenon, by collating data concerning pre-storm locations and kinematics of these boulders. The number of displaced boulders is 11, that is, in terms of morphological imprint of a specific storm, one of the major study cases for the Mediterranean. In addition, based on widely used hydrodynamic equations, the minimum wave height required to displace the boulders is assessed. The values conform with the expected values for the wave climate dominating during the causative meteorological event and give a measure of the energy of the storm slamming the coast. Boulder dislodgements usually have plays a key role in determining the rate of the coastal recession, likely also in the investigated area. In view of an adverse climate evolution with a possible increase of energy and frequency of severe storms, the results deriving from the study of this morphodynamics should be considered for the hazard assessment and coastal management.

Subject Areas

wave impact assessment; characteristic wave height; Salento peninsula; Taranto Gulf; Mediterranean Sea; November 2019 storm

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