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Współczesne procesy osuwiskowe na klifie w Jastrzębiej Górze

Zabuski Lesław, Kulczykowski Marek

Przegląd Geologiczny

2020

Vol. 68, Nr 9

682--690

The paper describes the geomorphological and geological structure of the cliff Baltic bank in Jastrzębia Góra. The detailed description and analysis of the landslide developed in the selected cross-section of the cliff is provided. Extensive complex investigations involving multiple techniques are described. These methods include the borehole drilling and inspection of the soils composing the slope, laboratory tests of the shear strength parameters by the triaxial compression method, slope stability calculations basing on the finite difference method and inclinometric measurements of the displacements in the borehole performed on the slope. The results prove that the extent of the landslide is limited to the upper part of the slope. The stability factor lower than 1.0 and the continuous displacements measured in the borehole indicate the recent cliff instability. Therefore the works for slope stabilization are strongly recommended.

A new approach of coastal cliff monitoring using mobile laser scanning

Ossowski R., Tysiąc P.

Polish Maritime Research

2018

nr 2

140--147

The article proposes a new approach of coastal cliff monitoring which bases on a new comprehensive monitoring system, being a combination of mobile scanning from the sea with the geotechnical stability analysis. Mobile laser scanning is an innovative solution for 3D data collection which allows the monitored object geometry to be precisely measured, thus providing opportunities for series of analyses contributing to the development of an improved monitoring system. The authors present selected cliff profiles obtained from mobile scanning in the area of Jastrzebia Gora, complemented by relevant geotechnical analyses. The analysis of current cliff geometry is accompanied by calculations of hypothetical cliff profile changes resulting from possible action of nature forces. Finally, a comprehensive strategy for coastal cliff monitoring is proposed.