Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Coastal Boulder Dynamics Inferred from Multi-Temporal Satellite Imagery, Geological and Meteorological Investigations in Southern Apulia, Italy

Version 1 : Received: 24 June 2021 / Approved: 25 June 2021 / Online: 25 June 2021 (10:12:06 CEST)

How to cite: Delle Rose, M.; Martano, P.; Orlanducci, L. Coastal Boulder Dynamics Inferred from Multi-Temporal Satellite Imagery, Geological and Meteorological Investigations in Southern Apulia, Italy. Preprints 2021, 2021060614 (doi: 10.20944/preprints202106.0614.v1). Delle Rose, M.; Martano, P.; Orlanducci, L. Coastal Boulder Dynamics Inferred from Multi-Temporal Satellite Imagery, Geological and Meteorological Investigations in Southern Apulia, Italy. Preprints 2021, 2021060614 (doi: 10.20944/preprints202106.0614.v1).

Abstract

Boulder dynamics may provide essential data for the coastal evolution and hazards assessment and can be focused as a proxy for the onshore effect of intense storm waves. In this work, detailed observations of currently available satellite imagery of the Earth surface allowed to identify several coastal boulders displacements in the Southern Apulia coast (Italy), in a period between July 2018 and June 2020. Field surveys confirmed the displacements of several dozens of boulders up to several meters in size, also allowing the determination of the initial position for many of them. Archive weather analyses identified two possible causative storms during the same period, and calculations based on analytical equations are found in agreement with the displacement by storm waves for most of the observed boulders. The results help to give insights about the onshore effect of high storm waves on the coastal hydrodynamics and the possible future flooding hazard in the studied coast.

Subject Areas

marine weather; characteristic wave height; storm surge; shore platform; overtopping wave; hydrodynamics equation; flooding hazard

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