Examination on Temporal Monitoring of Landslides with Geoelectric and Geodetic Measurements

In this study, a series of field study, data evaluation and modelling had been implemented as part of a joint work of geodesy and geophysics for the purpose of examining an active landslide in an area near ？anakkale Onsekiz Mart University Terzio？lu Campus. With the advance in GPS technology, systems that give the most accurate location in real time are being used with the help of code and phase evaluation that are gathered in real time in the receivers that are spreaded from satellites. It is commonly used in multiple fields including earth sciences because the locating is fast, efficient and economic unlike the terrestrial evaluating methods. With the geodetic GPS method, landslide movement on earth had been defined with high accuracy and with one of the geophysics method electric resistivity method, underground changes and sub-surface geometry of sliding landslide had been analized by examining and mechanism and impact of landslide had been determined. Within the scope of the study, two phased evaluation had been obtained. Seasonal impacts had been considered in planning evaluations."Dipole-Dipole" electrode array had been used and measurements had been made on a line in the direction of slip of the landslide. These measurements had been interpreted with the support of the programs. As a result of the study, position of the slip plane of the landslide and the relation of all these parameters had been revealed as well as the direction and magnitude of the current movement of the landslide area with the geodetic and geophysical models obtained from the campaign type measurements. When the electric resistivity data that were obtained in the beginning of the summer were interpreted, slides in cm size had been established in the area and they had been confirmed by ground- surface relation. It was concluded that multiple electrode DCR measurements that were used in this study might have given useful results to predict undersoil lithology and to establish to the location of the sliding base