Analysis of non-tidal ocean loading for gravitational potential observations in northern Europe
- authored by
- L. Leßmann, J. Müller
- Abstract
With the progress in clock technology heading towards a relative clock accuracy of 10−18, geodetic applications become feasible, such as determining gravity potential differences over large distances at the level of 0.1 m2 s−2. In this context, the effect of temporal gravity field variations on the new observable has to be considered. This paper studies non-tidal ocean loading effects on the gravitational potential around the North Sea with respect to signal strength and temporal behavior. Ten years of gravitational potential variations caused by non-tidal ocean loading are calculated for five locations in Germany and France using the Green's function approach. The potential variations are discussed with respect to a static gravity field, the effect of different measurement durations and the differences between two locations. The gravitational potential variations reach values of 0.2–0.5 m2 s−2 in coastal areas and decrease with increasing distance from the coast. Analyzing the potential variations for increasing measurement durations from 1 h to 48 h shows a decrease in magnitude. All investigated locations are strongly correlated. They differ mostly due to different magnitudes of the gravitational potential variations.
- Organisation(s)
-
Institute of Geodesy
- Type
- Article
- Journal
- Journal of geodynamics
- Volume
- 119
- Pages
- 23-28
- No. of pages
- 6
- ISSN
- 0264-3707
- Publication date
- 29.05.2018
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Geophysics, Earth-Surface Processes
- Electronic version(s)
-
https://doi.org/10.1016/j.jog.2018.05.008 (Access:
Closed)
-
Details in the research portal "Research@Leibniz University"