Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 35 |
| Fachzeitschrift | Journal of geodesy |
| Jahrgang | 96 |
| Ausgabenummer | 5 |
| Publikationsstatus | Veröffentlicht - 30 Apr. 2022 |
| Extern publiziert | Ja |
Abstract
We employ the barotropic, data-unconstrained ocean tide model TiME to derive an atlas for degree-3 tidal constituents including monthly to terdiurnal tidal species. The model is optimized with respect to the tide gauge data set TICON-td that is extended to include the respective tidal constituents of diurnal and higher frequencies. The tide gauge validation shows a root-mean-square (RMS) deviation of 0.9–1.3 mm for the individual species. We further model the load tide-induced gravimetric signals by two means (1) a global load Love number approach and (2) evaluating Greens-integrals at 16 selected locations of superconducting gravimeters. The RMS deviation between the amplitudes derived using both methods is below 0.5nGal (1nGal =0.01nms2) when excluding near-coastal gravimeters. Utilizing ETERNA-x, a recently upgraded and reworked tidal analysis software, we additionally derive degree-3 gravimetric tidal constituents for these stations, based on a hypothesis-free wave grouping approach. We demonstrate that this analysis is feasible, yielding amplitude predictions of only a few 10 nGal, and that it agrees with the modeled constituents on a level of 63–80% of the mean signal amplitude. Larger deviations are only found for lowest amplitude signals, near-coastal stations, or shorter and noisier data sets.
ASJC Scopus Sachgebiete
- Erdkunde und Planetologie (insg.)
- Computer in den Geowissenschaften
- Erdkunde und Planetologie (insg.)
- Geochemie und Petrologie
- Erdkunde und Planetologie (insg.)
- Geophysik
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in: Journal of geodesy, Jahrgang 96, Nr. 5, 35, 30.04.2022.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Modeling gravimetric signatures of third-degree ocean tides and their detection in superconducting gravimeter records
AU - Sulzbach, Roman
AU - Wziontek, Hartmut
AU - Hart-davis, Michael
AU - Dobslaw, Henryk
AU - Scherneck, Hans-georg
AU - Van Camp, Michel
AU - Omang, Ove Christian Dahl
AU - Antokoletz, Ezequiel D.
AU - Voigt, Christian
AU - Dettmering, Denise
AU - Thomas, Maik
N1 - Funding information: We thank an anonymous reviewer and the editor Michael Schindelegger for thoroughly reviewing the article and helpful suggestions. Special thanks go to Richard Ray who did not only provide a constructive review of this article but also valuable and comprehensive advice for understanding the phase conventions of the tide. We extend our gratitude to the hosts of the data services of IGETS. R.S., M.H.-D., D.D. and M.T. acknowledge funding by TIDUS project within the NEROGRAV research unit (DFG Research Unit 2736, Grants: TH864/15-1, DE2174/12-1). H.D. has been supported by Deutsche Forschungsgemeinschaft within the Collaborative Research Centre TerraQ (Project ID 434617780 - SFB 1464). This work used resources of the Deutsches Klimarechenzentrum (DKRZ) granted by its Scientific Steering Committee (WLA) under project ID 499 for the simulation of ocean tide solutions.
PY - 2022/4/30
Y1 - 2022/4/30
N2 - We employ the barotropic, data-unconstrained ocean tide model TiME to derive an atlas for degree-3 tidal constituents including monthly to terdiurnal tidal species. The model is optimized with respect to the tide gauge data set TICON-td that is extended to include the respective tidal constituents of diurnal and higher frequencies. The tide gauge validation shows a root-mean-square (RMS) deviation of 0.9–1.3 mm for the individual species. We further model the load tide-induced gravimetric signals by two means (1) a global load Love number approach and (2) evaluating Greens-integrals at 16 selected locations of superconducting gravimeters. The RMS deviation between the amplitudes derived using both methods is below 0.5nGal (1nGal =0.01nms2) when excluding near-coastal gravimeters. Utilizing ETERNA-x, a recently upgraded and reworked tidal analysis software, we additionally derive degree-3 gravimetric tidal constituents for these stations, based on a hypothesis-free wave grouping approach. We demonstrate that this analysis is feasible, yielding amplitude predictions of only a few 10 nGal, and that it agrees with the modeled constituents on a level of 63–80% of the mean signal amplitude. Larger deviations are only found for lowest amplitude signals, near-coastal stations, or shorter and noisier data sets.
AB - We employ the barotropic, data-unconstrained ocean tide model TiME to derive an atlas for degree-3 tidal constituents including monthly to terdiurnal tidal species. The model is optimized with respect to the tide gauge data set TICON-td that is extended to include the respective tidal constituents of diurnal and higher frequencies. The tide gauge validation shows a root-mean-square (RMS) deviation of 0.9–1.3 mm for the individual species. We further model the load tide-induced gravimetric signals by two means (1) a global load Love number approach and (2) evaluating Greens-integrals at 16 selected locations of superconducting gravimeters. The RMS deviation between the amplitudes derived using both methods is below 0.5nGal (1nGal =0.01nms2) when excluding near-coastal gravimeters. Utilizing ETERNA-x, a recently upgraded and reworked tidal analysis software, we additionally derive degree-3 gravimetric tidal constituents for these stations, based on a hypothesis-free wave grouping approach. We demonstrate that this analysis is feasible, yielding amplitude predictions of only a few 10 nGal, and that it agrees with the modeled constituents on a level of 63–80% of the mean signal amplitude. Larger deviations are only found for lowest amplitude signals, near-coastal stations, or shorter and noisier data sets.
KW - Degree-3 tides
KW - Superconducting gravimetry
KW - Tidal analysis
KW - Tidal modeling
KW - Tide gauge data
UR - http://www.scopus.com/inward/record.url?scp=85129149015&partnerID=8YFLogxK
U2 - 10.1007/s00190-022-01609-w
DO - 10.1007/s00190-022-01609-w
M3 - Article
VL - 96
JO - Journal of geodesy
JF - Journal of geodesy
SN - 0949-7714
IS - 5
M1 - 35
ER -