ZASTOSOWANIE METODY NAZIEMNEGO SKANINGU LASEROWEGO DO OCENY GEODYNAMIKI WYBRZEŻA NA PRZYKŁADZIE KLIFU JASTRZĘBIEJ GÓRY

Abstract

TERRESTRIAL LASER SCANNING APPLICATION FOR COASTAL GEODYNAMICS ASSESSMENT: THE CASE OF JASTRZĘBIA GÓRA CLIFFAbstract. Since 2010, the Polish Geological Institute – National Research Institute has implemented the use of Terrestrial Laser Scanning (TLS) for geodynamical processes monitoring of backshore parts of the Polish coastal zone. This article describes the methodology of TLS surveying, using Riegl VZ-400 ground-based laser scanner. The analyzed data originates from Jastrzębia Góra cliff. Coastal surveying, launched in April 2010 (ended in March 2011), showed diverse erosion rates. Western part of the Massive Cliff Stabilization System had split from the cliff face and advanced ca. 1.2 m seawards, together with nearly 1 m vertical displacement. An active landslide in the central coast section, caused shore retreat by 10 m and land loss of 4000 m3. In the eastern part, within the macroscopically stable colluvium, a shift of the forest stand of approximately 1 m was detected. The obtained data forms the basis of the morphometric database acquired by TLS.