A Gis method for geodetic applications: the central Apennine Geodetic Network (GeoNetGis)

Abstract

To geophysical research and monitor crustal deformation in seismic and volcanic areas, a Geodetic Geographical Information System has been developed (GeoNetGIS). We applied our geodetic oriented GIS to a new GPS network recently set up and surveyed in the Central Apennine region. The Central Apennine Geodetic Network (CA-GeoNet) consists in 130 stations with an average grid of 5 km, covering the main seismogenetic structures of the area. Management and mapping GPS networks with large multi-scaled data set, geographically referenced and with continuous or discrete coverage, required a multidisciplinary approach. GeoNetGIS, allow us, to analyze in three and four dimensions GPS sources, improve crustal deformation analysis and tectonic structure interpretation. Thematic Layers can be set up by many different databases such as Geodesy, Topography, Seismicity, Geology, Geography and Raster Images. GPS site displacements, velocity vectors and strain rate maps, gained by numerical and spatial analysis, can be showed by GeoNetGIS.