Crustal Structure in Southeastern Norway from Seismic Refraction Measurements,
Abstract
A seismic refraction profile was carried out in Southeastern Norway in 1969 as a part of the Trans-Scandinavian Seismic Project. The explosions were also recorded at NORSAR. The data suggests a three layered crust with seismic velocities of 6.2, 6.55 and 7.1-7.3 km/sec. The upper mantle velocity of 8.20 km/sec agrees with values found previously in Scandinavia. The mean depths to the discontinuities within the crust were determined to be 17 and 26 km. The depth to the Moho discontinuity varies from about 32 km in the southern part of the profile to 41 km in the central part of the profile. Under NORSAR, the depth to Moho varied from 31.5 km in the central part to 38 km under the C-ring. A linear relationship can be observed between the depth of the mantle and the surface elevation and between the depth of the mantle and the Bouguer anomaly. The density contrast between the crust and mantle was determined to be 0.50 g/cu cm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1971
- Accession Number
- AD0729216
Entities
People
- Kristen Haugland
- Reidar Kanestroem
Organizations
- University of Bergen