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ABSTRACT
The present project is aiming at the prevention of natural disasters that may occur in case of inadequate checking of the deformation and displacement of the artificial and natural dams. The kinematic and dynamic modelling of hydrotechnical dams is based on the integration of the information gathered by measuring the variation in space and time of the coordinates of fixed markers (permanent G.P.S. stations) as a reference, for a detailed recording of the displacements on some parts of the dam or of the whole system, and higher detailed by measurements in non-permanent stations during G.P.S. campaigns organized once or twice in a month. The integration of the results together with seismological information becomes crucial for the creation of a dynamic and kinematic model of such structures. Compression and rotation are representing the main types of mechanisms that are generating displacements on crustal blocks in this area, as it became known from stress determinations measured in hydrocarbon exploration wells. By the present activity generated by the Danube and by other rivers on which hydrotechnical constructions were made, the process of erosion and sediment transportation, greater socio-economical implication by the existence of hydroenergetic systems, the risk of a disasterís occurrence has increased in those areas, if they are not kept under permanent surveillance by modern methods and technologies. The displacements are very dangerous for these areas by the gathering of enormous forces which are released during seismic events. The seismological studies have confirmed the existence of a closed relationship between seismic activity and the structural settlement and the kinematics of great geological units. For the communities in the area as for the roads and natural details as rivers and lakes, they could become a great catastrophe. The purpose of the study is the determination of high risk areas, and their speed and acceleration. To be complete, the study must consider all factors that could lead to displacements of earthís crust: local geological structure, lithology, etc. This is the reason why the data processing will be done in many ways considering the elements that come into calculus. There will be used acceleration and displacement data, that together with the information provided by the high precision G.P.S. recorders (under 1 mm) will give us a better image of the deformation and displacements that could lead to a catastrophe.
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