An Integrated GPS Monitoring System for Site Investigation of Nuclear Waste Disposal

Abstract

An integrated GPS monitoring system has been in operation in the about 10-km2 study area at Olkiluoto, Finland since October, 1994. The system includes a permanent GPS station and a local GPS monitoring network. The permanent station is used to investigate regional crustal deformations in Finnish territory, while the local monitoring network is used to monitor relative deformations within the study area. The analysis of 2.8 years of continuous GPS tracking data shows that the horizontal components of the regional crustal deformations are about 2 mm/yr, while the vertical component is about 8 mm/yr. The local GPS monitoring network has been measured six times at half-yearly intervals. The horizontal components of the local movements obtained from the repeated measurements are less than 1.0 mm/yr. The GPS result indicates that the investigation area at Olkiluoto is rather stable.KeywordsInvestigation AreaPermanent StationNuclear Waste DisposalCurrent Plate MotionFinnish Geodetic InstituteThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.