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Bringing Bathymetry LiDAR to Coastal Zone Assessment: A Case Study in the Southern Baltic

Abstract

One of the major tasks in environmental protection is monitoring the coast for negative impacts due to climate change and anthropopressure. Remote sensing techniques are often used in studies of impact assessment. Topographic and bathymetric procedures are treated as separate measurement methods, while methods that combine coastal zone analysis with underwater impacts are rarely used in geotechnical analyses. This study presents an assessment of the bathymetry airborne system used for coastal monitoring, taking into account environmental conditions and providing a comparison with other monitoring methods. The tests were carried out on a section of the Baltic Sea where, despite successful monitoring, coastal degradation continues. This technology is able to determine the threat of coastal cliff erosion (based on the geotechnical analyses). Shallow depths have been reported to be a challenge for bathymetric Light Detection and Ranging (LiDAR), due to the difficulty in separating surface, water column and bottom reflections from each other. This challenge was overcome by describing the classification method used which was the CANUPO classification method as the most suitable for the point cloud processing. This study presents an innovative approach to identifying natural hazards, by combining analyses of coastal features with underwater factors. The main goal of this manuscript is to assess the suitability of using bathymetry scanning in the Baltic Sea to determine the factors causing coastal erosion. Furthermore, a geotechnical analysis was conducted, taking into account geometrical ground change underwater. This is the first study which uses a coastal monitoring approach, combining geotechnical computations with remote sensing data. This interdisciplinary scientific research can increase the awareness of the environmental processes.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
Remote Sensing no. 12,
ISSN: 2072-4292
Language:
English
Publication year:
2020
Bibliographic description:
Tysiąc P.: Bringing Bathymetry LiDAR to Coastal Zone Assessment: A Case Study in the Southern Baltic// Remote Sensing -Vol. 12,iss. 22 (2020), s.3740-
DOI:
Digital Object Identifier (open in new tab) 10.3390/rs12223740
Verified by:
Gdańsk University of Technology

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