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A preliminary geophysical analysis of gravity time-variation in Daejeon

  • Sung-Ho NaEmail author
  • Kyoochul Ha
  • Sang-Ho Moon
  • Heesung Yoon
  • Bong-Joo Lee
  • Seho Hwang
  • Young Hong Shin
  • Mutaek Lim
  • Yeong-Sue Park
Article
  • 6 Downloads

Abstract

A gravity time series slightly longer than a month acquired by using a Burris gravimeter at Daejeon, Korea has been analyzed. After removal of linear drift of the gravimeter, the observed data was found to closely match with the body tide prediction except; (i) small phase differences of each main tidal constituents and (ii) existence of long period component in the observed data. The r.m.s. observed gravity tide variation was 62.4 μGal. The overall g-factor was found as 1.165. The values of g-factor for the four main tidal constituents; M{nt2}, S2, O1, K1, were found as 1.166, 1.172, 1.168, and 1.142 respectively. The r.m.s. value of ocean tidal loading effect on gravity at Daejeon was 0.95 μGal during the time span. Both the rainfall and the atmospheric pressure change have induced gravity variations of amplitude of about 10 to 1 μGal. The long period component, which is clearly found in the observed spectrum, while not existent in the prediction, is possibly caused by the local ground water variation. It is desirable to have a few number of permanent gravity stations operating in Korean peninsula.

Key words

gravity tide g-factor ocean tidal loading atmospheric loading rainfall 

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References

  1. Agnew, D.C., 2009, Earth tides. In: Schubert, G. and Herring, T. (eds.), Treatise on Geophysics Vol. 3: Geodesy. Elsevier, Amsterdam, p. 163–195.Google Scholar
  2. Creutzfeldt, B., Gunter, A., Wziontek, H., and Merz B., 2010, Reducing local hydrology from high-precision gravity measurements: a lysimeter-based approach. Geophysical Journal International, 183, 178–187.CrossRefGoogle Scholar
  3. Eom, J.Y., Seo, K.W., Koo, M.H., and Kwon, B.D., 2009, Observation of gravity changes associated with variations of ground water tableObservation of gravity changes associated with. American Geophysical Union 2009 Fall Meeting, San Francisco, Dec. 142-18, G23C-0705.Google Scholar
  4. Goodkind, J.M., 1986, Continuous measurement of nontidal variations of gravity. Journal of Geophysical Research, 91, 9125–9134.CrossRefGoogle Scholar
  5. Guo, J.Y., Li, Y.B., Hwang, Y., Deng, H.T., Xu, S.Q., and Ning, J.S., 2004, Green’s function of the deformation of the Earth as a result of atmospheric loading. Geophysical Journal International, 159, 53–68.CrossRefGoogle Scholar
  6. Hassan, S., Troch, P., Boll, J., and Kroner, C., 2006, Modeling the hydrological effect on local gravity at Moxa, Germany. Journal of Hydrometeorology, 7, 346–354.CrossRefGoogle Scholar
  7. Jentzsch, G., Schulz, R., and Weise A., 2018, Automated Burris gravity meter for single and continuous observation. Geodesy and Geodynamics, 9, 204–209. https://doi.org/10.1016/j.geog.2017.09.007 CrossRefGoogle Scholar
  8. Kang, S., 2015, Digital signal analysis of the gravity tide signal. Master Thesis, Ajou University, Suwon, 43 p.Google Scholar
  9. Melchior, P., 1978, The Tides of the Planet Earth. Pergamon Press, London, 609 p.Google Scholar
  10. Merriam, J.B., 1992, Atmospheric pressure and gravity. Geophysical Journal International, 109, 488–500.CrossRefGoogle Scholar
  11. Meuers, B., Van Camp, M., and Petermanns, T., 2007, Correcting superconducting gravity time-series using rainfall modelling at the Vienna and Membach stations and application to Earth tide analysis. Journal of Geodesy, 81, 703–712.CrossRefGoogle Scholar
  12. Na, S.H., Shin, Y.H., and Baek, J.H., 2011, Some theoretical considerations in body tide calculation. Journal of the Korean Earth and Exploration Geophysics, 14, 133–139.Google Scholar
  13. Na, S.H., Kim, T.H., and Shin, Y.H., 2016, Advance in prediction of body tide and ocean tidal loading. Geosciences Journal, 20, 865–875.CrossRefGoogle Scholar
  14. Petit, G. and Luzum, B. (eds.), 2010, IERS conventions. IERS Technical Note 36, IERS Conventions Centre, Frankfurt am Main, 179 p.Google Scholar
  15. Ritzi Jr., R.W., Sorooshian, S., and Hsieh, P.A., 1991, The estimation of fluid flow properties from the response of water levels in wells to the combined atmosphere and Earth tide forces. Water Resources Research, 27, 883–893.CrossRefGoogle Scholar
  16. Tamura, Y., 1982, A computer program for calculating the tide generating force. The Publications of the International Latitude Observatory of Mizusawa, 16, 1–19.Google Scholar
  17. van Dam, T.M. and Francis, O., 1998, Two years of continuous measurements of tidal and nontidal variations of gravity in Boulder, Colorado. Geophysical Research Letters, 25, 393–396.CrossRefGoogle Scholar
  18. van Dam, T.M. and Wahr, J.M., 1987, Displacements of the Earth’s surface due to atmospheric loading: effects on gravity and baseline measurements. Journal of Geophysical Research, 92, 1281–1286.CrossRefGoogle Scholar
  19. Virtanen, H., 2001, Hydrological studies at the gravity station Metsahovi in Finland. Journal of the Geodetic Society of Japan, 47, 328–333.Google Scholar
  20. Warton, R.J. and Goodkind, J.M., 1977, The influence of atmospheric pressure variation on gravity. Geophysical Journal Royal Astronomical Society, 48, 281–292.CrossRefGoogle Scholar

Copyright information

© The Association of Korean Geoscience Societies and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Sung-Ho Na
    • 1
    • 3
    Email author
  • Kyoochul Ha
    • 2
  • Sang-Ho Moon
    • 2
  • Heesung Yoon
    • 2
  • Bong-Joo Lee
    • 2
  • Seho Hwang
    • 2
    • 3
  • Young Hong Shin
    • 2
  • Mutaek Lim
    • 2
  • Yeong-Sue Park
    • 2
  1. 1.Korea Astronomy and Space Institute-Satellite Laser Ranging (KASI-SLR) ObservatorySejongRepublic of Korea
  2. 2.Korea Institute of Geoscience and Mineral ResourcesDaejeonRepublic of Korea
  3. 3.University of Science and TechnologyDaejeonRepublic of Korea

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