MAPPING OF COASTAL AND SUBMARINE MORPHOLOGICAL LANDFORMS USING UNMANNED AERIAL SYSTEMS AND ECHO SOUNDING DATA, CASE STUDY: BULGARIAN BLACK SEA COASTAL SECTOR BETWEEN CAPE SIVRIBURUN AND CAPE KALIAKRA

DOI: 10.5593/sgem2021/2.1/s11.86 Publication Date: 2022-03-21T12:44:21Z