Diurnal pressure variations in the Garhwal Himalaya: atmospheric fluctuations associated with the solid Earth tide

Weather ◽  
2018 ◽  
Vol 74 (10) ◽  
pp. 340-343
Author(s):  
D. D. Khandelwal ◽  
Naresh Kumar ◽  
Vishal Chauhan
Keyword(s):  
Solid Earth ◽  
Earth Tide ◽  
Garhwal Himalaya ◽  
Solid Earth Tide

Determination of solid Earth tide phase lag by satellite observation data

1999 ◽  
Vol 44 (5) ◽  
pp. 459-461
Author(s):  
Bin Wu ◽  
Yaozhong Zhu ◽  
Bibo Peng
Keyword(s):  
Solid Earth ◽  
Earth Tide ◽  
Satellite Observation ◽  
Observation Data ◽  
Phase Lag ◽  
Solid Earth Tide

scholarly journals ANALYSIS OF THE PRINCIPAL CONSTITUENTS OF SOLID EARTH TIDES ESTIMATED WITH GRAVIMETRIC AND GNSS DATA IN MANAUS AND BRASÍLIA

2019 ◽  
Vol 37 (1) ◽  
pp. 11
Author(s):  
Mário A. de Abreu ◽  
Giuliano S. Marotta ◽  
Lavoisiane Ferreira ◽  
Denizar Blitzkow ◽  
Ana C. O. C. de Matos ◽  
...  
Keyword(s):  
Time Series ◽  
Solid Earth ◽  
Earth Tide ◽  
Earth Tides ◽  
Data Series ◽  
Long Period ◽  
Solid Earth Tides ◽  
Gravimetric Data ◽  
Time Required ◽  
Solid Earth Tide

ABSTRACT. Solid Earth tide is the periodic displacement due to the tidal force. This effect is present in all geodesic and geophysical observations and should be eliminated when high accuracy surveying is required. It is necessary to determine the amplitudes and phases of the harmonic constituents to estimate the terrestrial tide effect magnitude. This article presents a methodology for estimating and analyzing the amplitudes and phases of the solid Earth tide principal constituents from gravimetric/GNSS observations. The methodology was applied to data collected in the Manaus/AM and Brasília/DF stations, Brazil, to determine the amplitude and phase values for the long period, monthly, diurnal and semidiurnal constituents, besides determining the time required for the convergence of the estimated constituent values. The estimated amplitude and phase values, using gravimetric data, converged between the 2nd and 6th months of the time series. For the positioning observations, the constituents values converged between the 2nd and 17th month of the data series, except for the long period constituent, which requires a longer time series to obtain satisfactory values for both methods. The results show that the solid Earth tide constituents were better estimated by the gravimetric data compared to the positioning data considering the series analyzed.Keywords: gravimetry, GNSS, solid Earth tide, tidal constituents.RESUMO. Maré terrestre é o deslocamento periódico decorrente da força de maré. Este é um efeito que deve ser eliminado quando se deseja realizar levantamentos nos quais é necessária alta acurácia tanto em observações geodésicas quanto geofísicas. Para estimar o efeito de maré terrestre deve-se determinar as amplitudes e fases de suas componentes harmônicas. Este artigo apresenta uma metodologia para a estimativa das amplitudes e fases das principais componentes de maré terrestre, a partir de observações gravimétricas/GNSS. A metodologia foi aplicada a dados coletados em estações instaladas em Manaus/AM e Brasília/DF, Brasil, resultando na determinação dos valores de amplitude e fase para componentes de longo período, mensais, diurnas e semidiurnas, além da análise da convergência dos valores estimados para estas componentes. As amplitudes e fases calculadas, utilizando dados gravimétricos, convergiram entre o 2_ e o 6_ mês analisados, enquanto para os dados de posicionamento a convergência ocorreu entre o 2_ e o 17_ mês observado, com exceção da componente de longo período, que não pôde ser determinada em ambos os métodos. Para o período analisado, as componentes de maré terrestre foram melhor estimadas utilizando dados gravimétricos, se comparadas aos resultados obtidos com dados de posicionamento.Palavras-chave: gravimetria, GNSS, maré terrestre, componentes de maré.

Volcanic earthquakes at Pavlof Volcano correlated with the solid earth tide

Nature ◽  
1981 ◽  
Vol 294 (5842) ◽  
pp. 615-618 ◽  
Author(s):  
S. R. McNutt ◽  
R. J. Beavan
Keyword(s):  
Solid Earth ◽  
Earth Tide ◽  
Volcanic Earthquakes ◽  
Solid Earth Tide

Solid earth tide and observed change in the in situ seismic velocity

1973 ◽  
Vol 78 (8) ◽  
pp. 1319-1322 ◽  
Author(s):  
Thomas L. De Fazio ◽  
Keiiti Aki ◽  
John Alba
Keyword(s):  
Solid Earth ◽  
Seismic Velocity ◽  
Earth Tide ◽  
Solid Earth Tide

The impact of solid Earth-tide model error on tropospheric zenith delay estimates and GPS coordinate time series

Survey Review ◽  
2017 ◽  
Vol 50 (361) ◽  
pp. 355-363
Author(s):  
Fei Li ◽  
Jintao Lei ◽  
Shengkai Zhang ◽  
Chao Ma ◽  
Weifeng Hao ◽  
...  
Keyword(s):  
Time Series ◽  
Solid Earth ◽  
Earth Tide ◽  
Model Error ◽  
Coordinate Time ◽  
Zenith Delay ◽  
Tropospheric Zenith Delay ◽  
The Impact ◽  
Gps Coordinate Time Series ◽  
Solid Earth Tide

scholarly journals Aquifer Parameters Estimation from Natural Groundwater Level Fluctuations at the Mexican Wine-Producing Region Guadalupe Valley, BC

Water ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2437
Author(s):  
Mario A. Fuentes-Arreazola ◽  
Jorge Ramírez-Hernández ◽  
Rogelio Vázquez-González ◽  
Diana Núñez ◽  
Alejandro Díaz-Fernández ◽  
...  
Keyword(s):  
Solid Earth ◽  
Groundwater Level ◽  
Groundwater Resources ◽  
Earth Tide ◽  
Barometric Pressure ◽  
Parameters Estimation ◽  
Specific Storage ◽  
Geological Materials ◽  
Solid Earth Tide ◽  
Guadalupe Valley

Determining hydrogeological properties of the rock materials that constitute an aquifer through stress tests or laboratory tests presents inherent complications. An alternative tool that has significant advantages is the study of the groundwater-level response as a result of the pore-pressure variation caused by the internal structure deformation of the aquifer induced by barometric pressure and solid Earth tide. The purpose of this study was to estimate the values of the physical/hydraulic properties of the geological materials that constitute the Guadalupe Valley Aquifer based on the analysis of the groundwater-level response to barometric pressure and solid Earth tide. Representative values of specific storage (1.27 × 10−6 to 2.78 × 10−6 m−1), porosity (14–34%), storage coefficient (3.10 × 10−5 to 10.45 × 10−5), transmissivity (6.67 × 10−7 to 1.29 × 10−4 m2∙s−1), and hydraulic conductivity (2.30 × 10−3 to 2.97 × 10−1 m∙d−1) were estimated. The values obtained are consistent with the type of geological materials identified in the vicinity of the analyzed wells and values reported in previous studies. This analysis represents helpful information that can be considered a framework to design and assess management strategies for groundwater resources in the overexploited Guadalupe Valley Aquifer.

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