Ocean tide, Baltic Sea and atmospheric loading
model tilt comparisons with interferometric
geodynamic tilt observation - case study at Lohja2
geodynamic station, southern Finland

Ruotsalainen, Hannu; Nordman, Maaria; Virtanen, Jenni; Virtanen, Heikki

doi:10.1515/jogs-2015-0015

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…In Fig. 13, the Basler A602f camera system is located to the left of the end pot system, sealed against humidity inside a plastic box (Ruotsalainen et al 2015).…”

Section: Modernisation Of the Fgi Water Level Tilt Metermentioning

confidence: 99%

See 1 more Smart Citation

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

Ruotsalainen

2017

Pure Appl. Geophys.

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Abstract-A modern third-generation interferometric water level tilt meter was developed at the Finnish Geodetic Institute in 2000. The tilt meter has absolute scale and can do high-precision tilt measurements on earth tides, ocean tide loading and atmospheric loading. Additionally, it can be applied in various kinds of geodynamic and geophysical research. The principles and results of the historical 100-year-old Michelson-Gale tilt meter, as well as the development of interferometric water tube tilt meters of the Finnish Geodetic Institute, Finland, are reviewed. Modern Earth tide model tilt combined with Schwiderski ocean tide loading model explains the uncertainty in historical tilt observations by Michelson and Gale. Earth tide tilt observations in Lohja2 geodynamic station, southern Finland, are compared with the combined model earth tide and four ocean tide loading models. The observed diurnal and semidiurnal harmonic constituents do not fit well with combined models. The reason could be a result of the improper harmonic modelling of the Baltic Sea tides in those models.

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“…In Fig. 13, the Basler A602f camera system is located to the left of the end pot system, sealed against humidity inside a plastic box (Ruotsalainen et al 2015).…”

Section: Modernisation Of the Fgi Water Level Tilt Metermentioning

confidence: 99%

“…These include Baltic Sea non-tidal loading and atmospheric loading (Ruotsalainen et al 2015), free oscillations of the earth after great earthquakes (Ruotsalainen 2012), microseism and secular tilt recordings.…”

Section: Recordings and Analysis Of The Earth Tidementioning

confidence: 99%

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

Ruotsalainen

2017

Pure Appl. Geophys.

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“…The broad band of other geophysical phenomena (Ruotsalainen 2012) has been recorded since 2008, when the 50.4-m-long NSiWT instrument was set up as operational in the Lohja2 geodynamic station. These include Baltic Sea non-tidal loading and atmospheric loading (Ruotsalainen et al 2015), free oscillations of the earth after great earthquakes (Ruotsalainen 2012), microseism and secular tilt recordings.…”

Section: Recordings and Analysis Of The Earth Tidementioning

confidence: 99%

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

Ruotsalainen¹

2018

Pageoph Topical Volumes

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A modern third-generation interferometric water level tilt meter was developed at the Finnish Geodetic Institute in 2000. The tilt meter has absolute scale and can do high-precision tilt measurements on earth tides, ocean tide loading and atmospheric loading. Additionally, it can be applied in various kinds of geodynamic and geophysical research. The principles and results of the historical 100-year-old Michelson-Gale tilt meter, as well as the development of interferometric water tube tilt meters of the Finnish Geodetic Institute, Finland, are reviewed. Modern Earth tide model tilt combined with Schwiderski ocean tide loading model explains the uncertainty in historical tilt observations by Michelson and Gale. Earth tide tilt observations in Lohja2 geodynamic station, southern Finland, are compared with the combined model earth tide and four ocean tide loading models. The observed diurnal and semidiurnal harmonic constituents do not fit well with combined models. The reason could be a result of the improper harmonic modelling of the Baltic Sea tides in those models.

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“…The Baltic Sea exhibits a number of remarkable phenomena. One of them is the sea level variations due to winds, complicated by the shape of gulfs and islands (Ruotsalainen et al, 2015;Lisitzin, 1959;Wübber and Krauss, 1979). In the case of tidal variations of the Baltic Sea the range is in the order of centimetres only, but under mentioned influence, the range of sea level variations can reach 3 m on the coasts of gulfs (Virtanen and Mäkinen, 2003).…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Baltic Sea Non-tidal Loading on GNSS Station Coordinate Time Series: the Case of Latvia

Haritonova¹

2019

BJMC

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The objective of this study is to discover the geodynamic processes of the Earth's crust in the territory of Latvia occurred due to the effect of the Baltic Sea non-tidal loading, by way of using GNSS permanent station daily coordinate time series and tide gauge data to find correlations between two data sets for the period from 2012 up to 2018. For this study observations of 31 Latvian and 2 Estonian GNSS stations were used. Stations belong to the LatPos, EUPOS ®-Riga, EPN and EstPos networks. Station daily coordinate time series were computed using Bernese GNSS software v5.2 in a double-difference mode with 9 fiducial stations from International GNSS Service and EUREF Permanent GNSS Network. The analysis of obtained data significantly increases understanding of the Earth's surface displacements occurring due to the loading effect in Latvia.

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Ocean tide, Baltic Sea and atmospheric loading model tilt comparisons with interferometric geodynamic tilt observation - case study at Lohja2 geodynamic station, southern Finland

Cited by 5 publications

References 13 publications

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models

The Impact of the Baltic Sea Non-tidal Loading on GNSS Station Coordinate Time Series: the Case of Latvia

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