Abstract: GIS as a Planning Tool for Land 3D Seismic in a Densely Populated Area

GRAF, RENE and PETER KUHN

For planning and permitting purposes of a land 3D seismic campaign by the National Cooperative for the Disposal of Radioactive Waste (Nagra) all relevant topographic, infrastructural and regional planning data were incorporated into a geographical information system (GIS).

Digital orthophotos with a ground resolution of 50 cm were acquired to receive up-to-date topographic information. Digital land use maps and a digital terrain model were used as additional raster overlays.

Maps of all buried cables and pipes as well as regional planning data were digitized and inserted into the GIS database. To avoid potential damages to infrastructure, eco-systems and groundwater resources, buffer zones were defined and strictly honoured while positioning the more than 9000 shotpoints.

A close cooperation with the permitting crew and the seismic contractor was endeavored to take full advantage of the GIS dataset.

It is demonstrated that the use of a GIS is a highly efficient method to store, retrieve and update all necessary information for the permitting crew and similarly for the optimisation of acquisition parameters.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria