UNIGRACE COPERNICUS Programme Progress Report 1999 for Slovenia

In the seventies, seismological studics in Slovenia were complcmented by geodetic measurements. The measuring inslruments, measuring methods and data-processing algorithms employcd have enabled conclusions on the stability or nonstability of a specific area in sometimes a relative short time periods. Geodetic networks havc bccn set up along tectonic faults and arę locatcd in the most interesting parts of Slovene territory. Changes in the positions of nctwork points arę determincd on the basis of terrestrial measuremenls perfomied in selected time intervals. Recently, thcsc standard measurements have been joined and complemented by GPS measurements.This contnbution presents the dcvelopment of geodetic measurcments of tectonic movemcnts in Slovenia from 1977 to the present. Extremely prccise measurements, which frcquently do no receive sufficicnL (financial) support, arc ablc lo confirm the stability or nonstabilily of an observed area and complement seismological (geological) hypotheses and theorics.