Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
권호 표지
DOI QR코드

DOI QR Code

Wavelet Based Semblance and Eigenvalue Analysis for Geomagnetic Variation Related to Micro-Earthquakes in the Korean Peninsula

  • Ji, Yoon-Soo (Department of Energy and Resources Engineering, Kangwon National University) ;
  • Oh, Seok-Hoon (Department of Energy and Resources Engineering, Kangwon National University) ;
  • Kim, Ki-Yeon (Department of Energy and Resources Engineering, Kangwon National University)
  • Received : 2012.07.11
  • Accepted : 2012.08.24
  • Published : 2012.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this paper is to apply a newly developed wavelet-based semblance filtering and eigenvalue analysis to investigate the geomagnetic variations in some micro-earthquakes that had occurred in the Korean Peninsula. The wavelet-based filtering showed improved results in delineating the geomagnetic variations in relation to earthquake events from their background field. In addition, the eigenvalues analysis was also useful for the interpretation of three components geomagnetic fields during the earthquake events. The wavelet-based semblance analysis showed a prominent result for short-term geomagnetic variation related to the earthquake event, and the eigenvalue analysis was feasible to long-term geomagnetic variation. Considering the fact that the basement rock of the Korean Peninsula has a highly resistive electrical structure, it seems to be possible for small magnitude earthquakes to generate some distinguished geomagnetic variations.

Keywords

References

  1. Christensen, A.N., 2003, Semblance filtering of airborne potential field data. In: Extended Abstracts, 16th ASEG Conference and Exhibition, Adelaide.
  2. Cooper, G.R.J. and Cowan, D.R., 2008, Comparing time series using wavelet-based semblance analysis. Computers & Geosciences, 34, 95-102. https://doi.org/10.1016/j.cageo.2007.03.009
  3. Harada, M., Hattori, K., and Isezaki, N., 2004, Transfer function approach to signal discrimination of ULF geomagnetic data. Physics and Chemistry of the Earth, 29, 409-417. https://doi.org/10.1016/j.pce.2004.03.002
  4. Hattori, K., Serita, A., Gotoh, K., Yoshino, C., Harada, M., Isezaki, N., and Hayakawa, M., 2004, ULF geomagnetic anomaly associated with 2000 Izu Islands earthquake swarm, Japan. Physics and Chemistry of the Earth, 29, 425-435. https://doi.org/10.1016/j.pce.2003.11.014
  5. Hattori, K., Takahashi, I., Yoshino, C., Nagao, T., Liu., J.Y., and Shieh, C.F., 2002, ULF Geomagnetic and Geopotential measurement at Chia-Yi, Taiwan. Journal of Atmospheric Electricity, 22, 217-222.
  6. Hayakawa, M., Itoh, T., Hattori, K., and Yumoto, K., 2000, ULF electromagnetic precursors for an earthquake at Biak, Indonesia on February 17, 1996. Geophysical Research Letters, 27, 1531-1534. https://doi.org/10.1029/1999GL005432
  7. Ji, Y., Oh, S., Suh, B., Lee, D., 2011, Restoration, prediction, and noise analysis of geomagnetic timeseries data. Journal of the Korean Earth Science Society, 32, 613-628. https://doi.org/10.5467/JKESS.2011.32.6.613
  8. Johnston, M., 1997, Review of electric and magnetic fields accompanying seismic and volcanic activity. Surveys in Geophysics, 18, 441-475. https://doi.org/10.1023/A:1006500408086
  9. Kawate, R., Molchanov, O.A., and Hayakawa, M., 1998, Ultra-lowfrequency magnetic fields during the Guam earthquake of 8 August 1993 and their interpretation. Physics of the Earth and Planetary Interiors, 105, 229- 238. https://doi.org/10.1016/S0031-9201(97)00094-0
  10. Molchanov, O.A. and Hayakawa, M., 1998, On the generation mechanism of ULF seismogenic electromagnetic emissions. Physics of the Earth and Planetary Interiors, 105, 201-210. https://doi.org/10.1016/S0031-9201(97)00091-5
  11. Nordemann, D.J.R., Rigozo, N.R., de Souza Echer, M.P., and Echer, E., 2008, Principal components and iterative regression analysis of geophysical series: Application to Sunspot number (1750-2004). Computers & Geosciences, 34, 1443-1453. https://doi.org/10.1016/j.cageo.2007.09.022
  12. Oh, S., 2009, Variation analysis of geomagnetic data observed around the event of Andong earthquake (May 2, 2009). Journal of the Korean Earth Science Society, 30, 683-691. https://doi.org/10.5467/JKESS.2009.30.6.683
  13. Oh, S., 2012, Geomagnetic variation and its relation to microearthquakes in the seismically inactive Korean Peninsula. Geosciences Journal, 16, 47-58. https://doi.org/10.1007/s12303-012-0001-z
  14. Park, S.K., Johnston, M.J.S., Madden, T.R., Morgan, F.D., and Morrison, H.F., 1993, Electromagnetic precursors to earthquakes in the ULF band: A review of observations and mechanisms. Review of Geophysics, 31, 117-132. https://doi.org/10.1029/93RG00820
  15. Reasenberg, P.A., 1999, Foreshock occurrence before large earthquakes. Journal of Geophysical Research, 104, 4755-4768. https://doi.org/10.1029/1998JB900089
  16. Rikitake, T. and Honkura, Y., 1985, Solid earth geomagnetism. Springer, London, UK, 385 p.
  17. Tsuruoka, H., Ohtake, M., and Sato, H., 1995, Statistical test of tidal triggering of earthquakes: Contribution of the ocean tide loading effect, Geophysical Journal International, 122, 183-194. https://doi.org/10.1111/j.1365-246X.1995.tb03546.x
  18. Varotsos, P.A. and Alexopoulos, K., 1984, Physical properties of the variations of the electric field of the earth preceding earthquakes. Tectonophysics, 110, 73-98. https://doi.org/10.1016/0040-1951(84)90059-3
  19. Varotsos, P.A., Sarlis, N.V., and Skordas, E.S., 2003, Electric fields that "arrive" before the time-derivative of the magnetic field prior to major earthquakes. Physical Review Letters, 91, 148-501.
  20. Wan, Y.-G., Wu, Z.-L., Zhou, G.-W., Huang, J., and Qin, L.-X., 2002, Global test of seismic static stress triggering model. Acta Seismologica Sinica, 15, 318-332. https://doi.org/10.1007/s11589-002-0065-3
  21. Wu, Z.-L., 1999, Nature debates, http://helix.nature.com/debates/(June 29th 2012)

Cited by

  1. Sakurajima volcano eruption detected by GOCI and geomagnetic variation analysis - A case study of the 18 Aug, 2013 eruption - vol.30, pp.2, 2014, https://doi.org/10.7780/kjrs.2014.30.2.9