Last updated
December 31, 1979
Terms of use
Open use. Must provide the source. Use for commercial purposes requires permission of the data owner.

Description

Gravitational acceleration or gravity depends on the location of the measuring point and the mass distribution in the subsurface structure. A Bouguer anomaly is the difference between the gravity measured at a particular point on the Earth's surface and the gravity value expected at the same point for an Earth model with a homogeneous crust. Bouguer anomalies are calculated using the International Gravity Formula of 1967. Topographic effects are taken into account using a constant density of 2670 kg/m3 to a depth of 167 km (Hayford Zone O2). The map highlights, on the one hand, the regional negative gravity anomalies along the Alps and, on the other hand, the positive anomalies in the Sesia-Finero zone, which signify a mass excess in the Earth's interior. By E. Klingelé & R. Olivier, 1979. New edition: R. Olivier, B. Dumont & E. Klingelé, 2008.

Resources

Additional information

Identifier
618c9697-129f-47c7-830a-7a256b4c2499@bundesamt-fur-landestopografie-swisstopo
Issued date
December 31, 1979
Modified date
-
Publishers
Bundesamt für Landestopografie
Contact points
info@swisstopo.ch
Languages
Language independent
Further information
Geologischer Datenviewer
Landing page
https://shop.swisstopo.admin.ch/de/products/maps/geology/GK500/GK500_PAPER
Temporal coverage
-
Update interval
Irregular
Metadata Access
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