Gravity changes in Northern Europe as observed by GRACE

authored by: Jürgen Müller, M. Neumann-Redlin, F. Jarecki, H. Denker, O. Gitlein
Abstract: During the mission duration of GRACE (about five years), a temporal geoid change of about 3 mm is expected in the centre of the Fennoscandian land uplift area (the Bothnian Bay), corresponding to a gravity change of about 100 nm/s². The uplift effect reaches up to 11 mm/year at the Earth's surface. It can be observed geometrically by GPS, and gravitationally in space by GRACE as well as on the ground by absolute gravimetry. In this study, we determine gravity changes in Northern Europe from the monthly GRACE solutions as provided by CSR, University of Texas, and compare them with recent terrestrial gravity measurements carried out at some selected sites in the region. Each of the gravity data sets is affected by various geophysical processes such as atmospheric, oceanic and hydrological effects which conceal the uplift signal and therefore have to be removed. In this respect, also the processing and filtering of the various data sets is considered.
Organisation(s): Institute of Geodesy
Type: Conference contribution
Pages: 523-527
No. of pages: 5
Publication date: 01.12.2007
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computers in Earth Sciences, Geophysics
Electronic version(s): https://doi.org/10.1007/978-3-540-49350-1_76 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{79cb09a7e01b48538b22905d839e62e0,
title = "Gravity changes in Northern Europe as observed by GRACE",
abstract = "During the mission duration of GRACE (about five years), a temporal geoid change of about 3 mm is expected in the centre of the Fennoscandian land uplift area (the Bothnian Bay), corresponding to a gravity change of about 100 nm/s2. The uplift effect reaches up to 11 mm/year at the Earth's surface. It can be observed geometrically by GPS, and gravitationally in space by GRACE as well as on the ground by absolute gravimetry. In this study, we determine gravity changes in Northern Europe from the monthly GRACE solutions as provided by CSR, University of Texas, and compare them with recent terrestrial gravity measurements carried out at some selected sites in the region. Each of the gravity data sets is affected by various geophysical processes such as atmospheric, oceanic and hydrological effects which conceal the uplift signal and therefore have to be removed. In this respect, also the processing and filtering of the various data sets is considered.",
keywords = "Absolute gravimetry, GRACE, Postglacial rebound, Secular and periodic gravity changes",
author = "J{\"u}rgen M{\"u}ller and M. Neumann-Redlin and F. Jarecki and H. Denker and O. Gitlein",
year = "2007",
month = dec,
day = "1",
doi = "10.1007/978-3-540-49350-1_76",
language = "English",
isbn = "9783540493495",
series = "International Association of Geodesy Symposia",
pages = "523--527",
booktitle = "Dynamic Planet",
note = "IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools ; Conference date: 22-08-2005 Through 26-08-2005",
}