Absolute gravity values in Norway

Auteur(s) et Affiliation(s)

BREILI, K.

Geodetic Inst., Honefoss, Norvege

GJEVESTAD, J.G.

Dep. of Mathematical Sciences and Technology, Norwegian Univ. of Life Sciences (UMB), Ås, Norvege

LYSAKER, D.I.

Geodetic Inst., Honefoss, Norvege

DAHL OMANG, C.

Geodetic Inst., Honefoss, Norvege

PETTERSEN, B.R.

Dep. of Mathematical Sciences and Technology, Norwegian Univ. of Life Sciences (UMB), Ås, Norvege

Description :
In this paper, the first gravity values at 16 Norwegian stations measured by a modern absolute gravimeter of the FG5 type are presented. The gravity observations were corrected for Earth tides, varying atmospheric pressure, polar motion, and ocean tide loading. The ocean tide loading corrections were subject to special attention. A model based on locally observed ocean tides was applied at some of the stations. The authors estimated the total uncertainties of the gravity values to range from 3 to 4 ϻgal.These errors are of magnitude one order less than previously presented absolute gravity values from Norway. The final gravity values are time tagged and will change due to postglacial rebound.

Type de document :
Article de périodique

Source :
Norsk geografisk tidsskrift, issn : 0029-1951, 2010, vol. 64, n°. 2, p. 79-84, nombre de pages : 6, Références bibliographiques : 23 ref.

Date :
2010

Editeur :
Pays édition : Norvege, Oslo, Norske geografiske selskab ; Universitetsforlaget

Langue :
Anglais