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ISPRS Int. J. Geo-Inf. 2018, 7(7), 234; https://doi.org/10.3390/ijgi7070234

3-D Morphological Change Analysis of a Beach with Seagrass Berm Using a Terrestrial Laser Scanner

1
Department of Earth Sciences and the Environment, University of Alicante, 03690 Alicante, Spain
2
Department of Civil Engineering, University of Alicante, 03690 Alicante, Spain
3
Marine Science Degree, University of Alicante, 03690 Alicante, Spain
4
School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
Co-Fist Author.
*
Authors to whom correspondence should be addressed.
Received: 4 May 2018 / Revised: 30 May 2018 / Accepted: 18 June 2018 / Published: 21 June 2018
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Abstract

Along many Mediterranean coasts, the detached seagrass material of Posidonia oceanica creates seagrass berms that control the structure and morphodynamics of sandy beaches. Here, we show how Terrestrial Laser Scanner remote sensing data allows analyzing the 3-D morphologic change of beaches where this characteristic geomorphic structure is present. We propose a methodology for estimating accretion/erosion (almost −200 m3 in our study) by considering the sand dominated and seagrass berms as two independent elements. For this purpose, two different sampling dates (named scenarios A and B, before and after an erosive heavy storms period, respectively) recorded in a microtidal pocket-beach (300 m2) with these characteristic geomorphic structures have been modeled in 3-D. The present approach constitutes a cost-efficient, accurate, and quick tool to survey the sand volume in natural and artificial replenished beaches. The innovative approach, which can be considered as a conceptual and methodological starting point, can be useful to examine long-term and high-precision data sets in future studies of the morphodynamic evolution of these characteristic Mediterranean beaches. View Full-Text
Keywords: terrestrial laser scanner; coastal geomorphology; remote sensing; 3-D modeling; western Mediterranean terrestrial laser scanner; coastal geomorphology; remote sensing; 3-D modeling; western Mediterranean
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Corbí, H.; Riquelme, A.; Megías-Baños, C.; Abellan, A. 3-D Morphological Change Analysis of a Beach with Seagrass Berm Using a Terrestrial Laser Scanner. ISPRS Int. J. Geo-Inf. 2018, 7, 234.

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