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
-
Publisher
Bundesamt für Landestopografie swisstopo
Contact points
milan.beres@swisstopo.ch
Languages
  • English
  • German
  • French
  • Italian
Further information
Landing page
https://shop.swisstopo.admin.ch/de/karten/geologische-karten/geokarten-500000
Documentation
Temporal coverage
-
Spatial coverage
Landeskarte 1:500'000
Update interval
Irregular
Metadata Access
API (JSON) Download XML

Got questions?

Ask the publisher directly

milan.beres@swisstopo.ch