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MORPHOLOGY OF THE STRANDZHA COASTAL ZONE, SOUTHERN BULGARIAN BLACK SEA COAST

Bogdan Prodanov, Lyubomir Dimitrov

Abstract

The study of the specific nature of the coastal zone requires a combination of a wide range of data from multi-beam and single-beam echosounding, LiDAR scanning, unmanned aerial vehicles, and generation of accurate high-resolution digital terrain models. In recent years, the development of seabed mapping technology has allowed for more precise mapping of the coastal zone. The complex analysis of data on relief, morphostructural units, contemporary tectonic deformations, geological and lithostratigraphical structure, morpho-hydrographic, topography, and lithological variates allows for a more detailed morphological study of the Strandzha costal sector. As a result of an in-depth GIS-based morphometric analysis, the spatial borders of the coastal structural blocks and its morphological elements of the terrestrial and marine parts were investigated. The morphologically expressed components of the relief that affect the contemporary structural forms in the coastal zone were mapped and traced underwater. The generation of very high-resolution (VHR) orthophoto mosaics (OMs) of the Strandzha coast allowed to digitize shoreline in scale 1:1,000. Based on a detailed DSM morphometric analysis, the geomorphic landforms were mapped and divided into cliffed and rocky coast and depositional coast.

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DOI resolver: doi.org/10.5593/sgem2020/1.1/s01.024

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