Details
| Original language | English |
|---|---|
| Pages (from-to) | 23-28 |
| Number of pages | 6 |
| Journal | Journal of geodynamics |
| Volume | 119 |
| Publication status | Published - 29 May 2018 |
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.
Keywords
- Gravitational potential, Non-tidal ocean loading, North Sea, Relativistic geodesy
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Earth-Surface Processes
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In: Journal of geodynamics, Vol. 119, 29.05.2018, p. 23-28.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Analysis of non-tidal ocean loading for gravitational potential observations in northern Europe
AU - Leßmann, L.
AU - Müller, J.
N1 - Funding information: The authors would like to thank the DFG Collaborative Research Center CRC-1128 Relativistic Geodesy and Gravimetry with Quantum Sensors (geo-Q) for financial support. We want to thank the reviewer for the valuable comments.
PY - 2018/5/29
Y1 - 2018/5/29
N2 - 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.
AB - 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.
KW - Gravitational potential
KW - Non-tidal ocean loading
KW - North Sea
KW - Relativistic geodesy
UR - http://www.scopus.com/inward/record.url?scp=85048147097&partnerID=8YFLogxK
U2 - 10.1016/j.jog.2018.05.008
DO - 10.1016/j.jog.2018.05.008
M3 - Article
AN - SCOPUS:85048147097
VL - 119
SP - 23
EP - 28
JO - Journal of geodynamics
JF - Journal of geodynamics
SN - 0264-3707
ER -