Accuracy Assessment of a Seamless Depth Datum Model established on the Basis of the Global Ocean Tide Model

2020 ◽  
Vol 99 (sp1) ◽  
pp. 74
Author(s):  
Jie Li ◽  
Yanguang Fu ◽  
Qiuhua Tang ◽  
Yikai Feng ◽  
Xinghua Zhou ◽  
...  
Keyword(s):  
Accuracy Assessment ◽  
Global Ocean ◽  
Ocean Tide ◽  
Ocean Tide Model ◽  
Tide Model

scholarly journals Research Article. Towards a tidal loading model for the Argentine-German Geodetic Observatory (La Plata)

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
A. Richter ◽  
L. Müller ◽  
E. Marderwald ◽  
L. Mendoza ◽  
E. Kruse ◽  
...  
Keyword(s):  
Earth Tides ◽  
Global Ocean ◽  
Ocean Tide ◽  
Observation Data ◽  
Additional Contribution ◽  
La Plata ◽  
Ocean Tide Model ◽  
Tide Model ◽  
Loading Effects ◽  
Tidal Loading

AbstractWe present a regionalized model of ocean tidal loading effects for the Argentine-German Geodetic Observatory in La Plata. It provides the amplitudes and phases of gravity variations and vertical deformation for nine tidal constituents to be applied as corrections to the observatory’s future geodetic observation data. This model combines a global ocean tide model with a model of the tides in the Río de la Plata estuary. A comparison with conventional predictions based only on the global ocean tide model reveals the importance of the incorporation of the regional tide model. Tidal loading at the observatory is dominated by the tides in the Atlantic Ocean. An additional contribution of local tidal loading in channels and groundwater is examined. The magnitude of the tidal loading is also reviewed in the context of the effects of solid earth tides, atmospheric loading and non-tidal loads.

scholarly journals REFINE OF REGIONAL OCEAN TIDE MODEL USING GPS DATA

2018 ◽  
Vol XLII-3 ◽  
pp. 1685-1688
Author(s):  
F. Wang ◽  
P. Zhang ◽  
Z. Sun ◽  
Z. Jiang ◽  
Q. Zhang
Keyword(s):  
High Precision ◽  
Global Ocean ◽  
Ocean Tide ◽  
Gps Tracking ◽  
Inversion Method ◽  
Observation Data ◽  
Ocean Tide Model ◽  
Tide Model ◽  
Loading Effects ◽  
Ocean Tide Models

Due to lack of regional data constraints, all global ocean tide models are not accuracy enough in offshore areas around China, also the displacements predicted by different models are not consistency. The ocean tide loading effects have become a major source of error in the high precision GPS positioning. It is important for high precision GPS applications to build an appropriate regional ocean tide model. We first process the four offshore GPS tracking station’s observation data which located in Guangdong province of China by using PPP aproach to get the time series. Then use the spectral inversion method to acquire eigenvalues of the Ocean Tidal Loading. We get the estimated value of not only ~12hour period tide wave (M2, S2, N2, K2) but also ~24hour period tide wave (O1, K1, P1, Q1) which has not been got in presious studies. The contrast test shows that GPS estimation value of M2, K1 is consistent with the result of five famous glocal ocean load tide models, but S2, N2, K2, O1, P1, Q1 is obviously larger.

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