Rates of Natural Subsidence along the Texas Coast Derived from GPS and Tide Gauge Measurements (1904–2020)

2021 ◽  
Vol 147 (4) ◽  
pp. 04021020
Author(s):  
Xin Zhou ◽  
Guoquan Wang ◽  
Kuan Wang ◽  
Hanlin Liu ◽  
Haimin Lyu ◽  
...  
Keyword(s):  
Tide Gauge ◽  
Texas Coast ◽  
Tide Gauge Measurements

Very-Long-Baseline Interferometry Applied to Geophysics

1993 ◽  
Vol 156 ◽  
pp. 133-144
Author(s):  
W. E. Carter ◽  
D. S. Robertson
Keyword(s):  
Very Long Baseline Interferometry ◽  
Tide Gauge ◽  
Global Changes ◽  
Long Baseline ◽  
Tidal Forces ◽  
The Earth ◽  
Tide Gauge Measurements ◽  
Rotation Of The Earth ◽  
Global Reference Frame

Very-long-baseline Interferometry (VLBI) has opened for study a broad new spectrum of geophysical phenomena including: direct observation of the tectonic motions and deformations of the Earth's crustal plates, observations of unprecedented detail of the variations in the rotation of the Earth, and direct measurement of the elastic deformations of the Earth in response to tidal forces. These new measurements have placed significant constraints on models of the interior structure of the Earth; for example, measurements of the variations in the Earth's nutation have been shown to be particularly sensitive to the shape of the core-mantle boundary. The VLBI measurements will allow us to construct a global reference frame accurate at the centimeter level. Such a frame will be essential to studying long-term global changes, especially those changes related to sea-level variations as recorded by tide gauge measurements.

scholarly journals Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements

2020 ◽  
Vol 12 (23) ◽  
pp. 3970
Author(s):  
Antonio Sánchez-Román ◽  
Ananda Pascual ◽  
Marie-Isabelle Pujol ◽  
Guillaume Taburet ◽  
Marta Marcos ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Tide Gauge ◽  
Synthetic Aperture ◽  
Altimetry Data ◽  
Radar Altimeter ◽  
Long Wave ◽  
Tide Gauge Measurements ◽  
European Seas ◽  
Aperture Radar

The quality of the Data Unification and Altimeter Combination System (DUACS) Sentinel-3A altimeter data in the coastal area of the European seas is investigated through a comparison with in situ tide gauge measurements. The comparison was also conducted using altimetry data from Jason-3 for inter-comparison purposes. We found that Sentinel-3A improved the root mean square differences (RMSD) by 13% with respect to the Jason-3 mission. In addition, the variance in the differences between the two datasets was reduced by 25%. To explain the improved capture of Sea Level Anomaly by Sentinel-3A in the coastal band, the impact of the measurement noise on the synthetic aperture radar altimeter, the distance to the coast, and Long Wave Error correction applied on altimetry data were checked. The results confirmed that the synthetic aperture radar altimeter instrument onboard the Sentinel-3A mission better solves the signal in the coastal band. Moreover, the Long Wave Error processing contributes to reduce the errors in altimetry, enhancing the consistency between the altimeter and in situ datasets.

Improvement of ocean loading correction on gravity data with additional tide gauge measurements

2005 ◽  
Vol 40 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Juergen Neumeyer ◽  
Jorge del Pino ◽  
Olaf Dierks ◽  
He-Ping Sun ◽  
Hartmut Pflug
Keyword(s):  
Tide Gauge ◽  
Gravity Data ◽  
Ocean Loading ◽  
Tide Gauge Measurements

M2 World Ocean tide from tide gauge measurements

1991 ◽  
Vol 18 (6) ◽  
pp. 1167-1170 ◽  
Author(s):  
O. Francis ◽  
P. Mazzega
Keyword(s):  
Tide Gauge ◽  
World Ocean ◽  
Ocean Tide ◽  
Tide Gauge Measurements

scholarly journals The coherence of small island sea-level with the wider ocean: a model study

2012 ◽  
Vol 9 (5) ◽  
pp. 3049-3070
Author(s):  
Joanne Williams ◽  
Christopher W. Hughes
Keyword(s):  
Sea Level ◽  
Tide Gauge ◽  
Deep Ocean ◽  
Ocean Model ◽  
Small Island ◽  
Poor Agreement ◽  
Model Study ◽  
Tide Gauge Measurements ◽  
The Relationship ◽  
Good Agreement

Abstract. Studies comparing tide gauge measurements with sea level from nearby satellite altimetry have shown good agreement for some islands, and poor agreement for others, though no explanation has been offered. Using the 1/12° OCCAM ocean model, we investigate the relationship between sea level at small, open-ocean islands, and offshore sea level. For every such island or seamount in the model, we compare the shallow-water sea level with the steric and bottom pressure variability in a neighboring ring of deep water. We find a latitude-dependent range of frequencies for which off-shore sea level is poorly correlated with island sea level. This poor coherence occurs in a spectral region for which steric signals dominate, but are unable to propagate as baroclinic Rossby waves. This mode of decoupling does not arise because of island topography, as the same decoupling is seen between deep ocean points and surrounding rings.

Unification of Vertical Datum In Sabah and Sarawak

2014 ◽  
Vol 71 (4) ◽  
Author(s):  
Othman A.H. ◽  
Omar, K. ◽  
Othman. R ◽  
Mat Som Z.A ◽  
Opaluwa, Y.D
Keyword(s):  
Sea Level ◽  
Tide Gauge ◽  
Current Status ◽  
Gravimetric Geoid ◽  
Geoid Model ◽  
Mean Sea Level ◽  
Vertical Datum ◽  
East Malaysia ◽  
Tide Gauge Measurements ◽  
Sabah And Sarawak

The present vertical datums in Sabah and Sarawak (East Malaysia) are based upon various tide gauge measurements of mean sea level over certain period defined locally, are manifested by a physical framework of vertical reference point i.e benchmarks. An effort to establish a unified vertical network in Sabah and Sarawak has undergone very tedious survey operation, lack of access routes to connect levelling network due to geographical setting constraint, and it is too costly to be fully implemented. This paper discussed the current status of vertical datum in East Malaysia as well as the concept of realizing new vertical datum based on gravimetric geoid model.

scholarly journals The Effect of Warming Oceans at a Tide Gauge Station

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
H. Bâki Iz
Keyword(s):  
Tide Gauge ◽  
Sea Surface ◽  
New Paradigm ◽  
Descriptive Model ◽  
Tide Gauge Station ◽  
Key West ◽  
Lump Sum ◽  
Gauge Station ◽  
Sea Surface Temperature Anomalies ◽  
Tide Gauge Measurements

AbstractThis study proposes a new paradigm for assessing thermosteric effects of warming oceans at a tide gauge station. For demonstration, the trend due to the global thermosteric sea level at the Key West, FL tide gauge station was estimated using the tide gauge measurements and the global sea surface temperature anomalies that were represented by yearly distributed lags. A comparison of the estimate with the trend estimate from a descriptive model revealed that 0.7±0.1 mm/yr, (p<0.01), of the total trend 2.2±0.1 mm/yr (p<0.01) estimated using the descriptive model can be attributed to the global warming of the oceans during the last century at this station. The remaining 1.5±0.1 mm/yr, 70 percent of the total trend, is the lump sum estimate of the secular changes due to the eustatic, halosteric, and various local isostatic contributions.

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