ISEMAR · Application of integrated sea-bottom exploration by hydro-acoustic methods: Forecast of marine aggregates resources in Lithuania
FP6 — Marie Curie Actions (Human Resources and Mobility)
- Duration
- 2006-04-01 → 2007-03-31
- EU contribution
- €40,000
- Participants
- 1
- Scheme
- ERG
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Results in brief
Final Activity Report Summary - ISEMAR (Application of Integrated Sea-Bottom Exploration by Hydro-acoustic Methods: Forecast of Marine Aggregates Resources in Lithuania)
The strategic objective of the three year duration project is to promote and adapt the state-of-the-art non-invasive hydro-acoustic marine floor research methods for marine sand aggregates exploration and beach nourishment purposes on strongly eroding South-East Baltic Sea coast, Lithuania. The main aims of the research project: - to promote the hydro-acoustic investigations in Lithuanian marine investigations; - map the morphology and lithology if the seabed; - marine aggregates forecast and exploration for the beach nourishment; - pre-evaluation of sediment dynamics and volumetric balance changes in the near-shore zone; - adapt the existing European regulations of marine aggregate extraction in Lithuania; Achieved results for the first research period (April 2006 - March 2007): The wide complex of the modern hydro-acoustic methods was used in the research, which includes: side scan sonar (acoustic picture of the seafloor), multi and single beam echo-sounders (accurate seabed morphology), sub-bottom profiler (shallow subbotom geology). Four pre-defined areas for marine sand extraction were pre-prospected and preliminary maps of seabed lithology and morphology were compiled. Two potential areas were chosen for complete investigation in order to calculate the possible amount and conditions of sand extraction and map of superficial sediments distribution, map and 3D seafloor morphology model, model of shallow sub-bottom geology were made according to hydro-acoustic survey data. According to the quality and quantity analysis of the potential sand deposits, the technical project for beach nourishment implementation and EIA study were prepared. The results of investigations have been presented in: - the Baltic Sea Science Congress at the University of Rostock, 19-23 March 2007; - the local scientific conference 'Sustainable development indicators for state of the coast evaluation', Palanga, Lithuania, 29-30 March 2007.
Data: CORDIS, © European Union
Project objective
The strategic objective of the project is to promote and adapt the state-of-the-art non-invasive hydro-acoustic marine floor research methods through the example of their implementation for marine sand aggregates exploration for beach nourishment purposes on strongly eroding East Baltic Sea coast. Progress in acoustic methods ensures good recognition and classification of the sea bottom surface and seabed morphology as well as its geological structure. Modern hydro-acoustic methods together with precise positioning system provide possibility of constant digital registration of the sea bottom development due to human impact or natural processes. Such approach allows predicting the sediment dynamics changes in the near-shore zone and evaluate coast development and possible erosion threat, which is extremely important for the actual and future costal management. The interpretations based on the physical seabed sampling determined that the major part of the seabed surface remains unrecognised but specified only by the means of interpolation. Modern acoustic equipment ensures complete seafloor covering and therefore maximum accurate and realistic results can be obtained.The original idea of the research project is to recognize and map the old (drowned) beach sediments of the offshore zone and evaluate their suitability for the actual beach nourishment activities. The complex geological history of the Baltic Sea has determined, that the prospecting of marine aggregates suitable for the beach protection/replenishment works is rather complicated business. During water level changes and shoreline migrations in Late Glacial and Early Holocene Pleistocene sediments were eroded and re-deposited. Namely former beach sediments should be studied as the 1st rank potential source material for the actual beach protection activities and actual beach replenishment works.
Original text from CORDIS.
Participants
- KLAIPEDA UNIVERSITY COASTAL RESEARCH AND PLANING INSTITUTE · KLAIPEDACoordinatorCity levelLithuania
Links
Data: CORDIS, © European Union