ZASTOSOWANIE SATELITARNEJ INTERFEROMETRII RADAROWEJ DO IDENTYFIKACJI MOBILNOŚCI FORM SOLNYCH CENTRALNEJ POLSKI NA PRZYKŁADZIE WYSADU SOLNEGO INOWROCŁAW

Abstract

APPLICATION OF THE SAR INTERFEROMETRIC METHODS TO IDENTIFY THE MOBILITY OF THE SALT STRUCTURES IN CENTRAL POLAND ON THE EXAMPLE OF THE SALT DIAPIR IN INOWROCŁAWAbstract. The presence of salt structures in the Inowrocław area of the Kujawy region constitutes the geological setting, which is typical for lowlands of Central Poland. In the regional aspect salt structure in the Inowrocław area is genetically connected with block tectonic of the subsurface of Permian complex. It was one of the most important factor initiating uplift of the salt anticlines. Tectonic zones, rooted in the deep substratum show activity till the present times. This activity influences at the configuration of the terrain surface in the vicinity of the Inowrocław salt diapir. Persistent scatterer interferometry (PSI) method was applied for studying relationships between vertical movements of the earth surface and structural - geological development of the Inowrocław diapir as well as morphological surface of Quaternary substratum. These investigations were carried out in the local scale (around Inowrocław salt diapir) and regional (fragments of the salt anticlines of Inowrocław, Gopło, Barcin and Góra). Simple relationships were confirmed between shape of the terrain relief and Quaternary substratum and map of the distribution of the vertical movements. It is assumed that mechanism of the terrain mobility above Inowrocław salt diapir is connected with contemporary halotectonic activity. However, for the uplift and subsidence of this area are responsible many other factors. There are as follow: lithology (reactions between gypsum cap and groundwater of different horizons, leading to increase of rock volume or lose of moisture content of the gypsum complex, and finally - subsidence), tectonics (faults and haloctectonic phenomena), impact of mining exploitation and changes of groundwater levels. Results of analysis of PSI data show approximate values of ground movements in this area. Active tectonic zones determinated during detailed geological - structural analysis enabled to better understanding of teh character of ground movements. The relationship  between ground movements and contemporary halotectonic phenomena was observed, too. Presented data show big potential of the PSI radar satellite methodology for investigation and analysis of ground movements at the areas od salt structures.