- Outlining the areas at risk of marine abrasion
- Preparing experts opinions on the degree of earth fall, slope waste and landslide hazard.
- ROCKFALLS which tend to be formed on cliffs made of boulder clay
- DEBRIS FALLS are to be found on cliffs built of sandy sediments
- LANDSLIDES are formed on cliffs of a complex structure, particularly where clay deposits create a potential sliding plane; they represent the most dangerous phenomenon, and many times they can stretch up to a few hundred metres deep into land, unlike rockfalls and debris falls which are to be observed mainly within a few-meter zone at the junction of a cliff and beach.
- Monitoring of coastal erosion for its geological conditioning with ground laser scanning, seismic refraction and geological drillings.
Monitoring of landslides and sea cliffs by the ground laser scanning enables it to register changes of the following:
- location of selected points on a landslide
- location and shape of the surface of a landslide of cliff
- location of building walls, road pavements, etc.
- location and contour of linear elements (edges of buildings, roads, etc.)
- location and the shape of bodies, e.g. of buildings
- Analysis and prognosis for the coast development
- Preparing a map of the areas at risk of landslides and mass movements
What the Project is basically aimed at is exploration, documentation and presentation on a map at a scale of 1: 10,000 all landslides, rockfalls, debris falls and potentially hazardous areas for mass movements in Poland and establishing a deep and surface monitoring system on some selected landslides.
The PGI-NRI has made pilot maps of landslides at a scale of 1:10,000 for the commune of Władysławowo. Maps of landslides and hazardous areas for mass movements at a scale of 1:10,000 are the basic source of information on geohazards which is necessary for optimal spatial planning.
- Drawing up registration and documentation cards of landslides
- Evaluation of possible stabilization of cliff slopes
- Selection a method of protecting a cliff and its enclosure
- Drafting a project of cliff slope stabilization monitoring
- Training of local government staff in using the SOPO Project database
- Exploratory and documentation work on sea sands to be used for artificial feeding of beaches and preparing recommendations on the method of exploitation of the sands
Exploration of the Baltic Sea bed deposits carried out so far, including the thickness of the sand layer, proves that in some regions there is not enough sands suitable to feed beaches. Therefore, it is necessary to take up additional exploratory work and detailed studies of sand deposit prospective areas on the sea bed which are well above 600 square kilometres.
- Control of the beaches artificial feeding effectiveness
- RIEGL VZ-400 ground laser scanner
- NIKON D700 still camera with NIKKOR 14 mm f/2.8D and 50 mm f/1.8D lenses
- GPS system Trimble R8 GNSS
- TERRALOCK MK6 24-channel measuring system with geophones type L-B10 and a rotary percussion hammer drill bit percussive device PEG40
- GEOPROBE drill rig
- LANDROVER all-terrain vehicle
- RIEGL RiSCAN PRO
- ASCAN manufactured by ASTRAGIS and supported by the Microstation environment
- REFLEXW made by SAND MEIER
Leszek Jurys, MSc Eng.
Marine Geology Branch
tel. +48 58 554 29 09, +48 58 554 31 35
fax +48 58 554 29 10
Justyna Relisko-Rybak, MSc
tel. +48 91 43 23 435
Dariusz Grabowski, Dr
tel. +48 22 45 92 322
Zbigniew Frankowski, Dr
Geological Engineering Laboratory
tel. +48 22 45 03 620