Propagation of microseisms from the deep ocean to land (original) (raw)

Abstract

sparkles

AI

This research investigates the propagation of microseisms generated by oceanic pressure fluctuations through different geological configurations from the deep ocean to land. It distinguishes between primary and secondary microseisms and employs numerical simulations to model their behavior across the continental shelf, focusing on wave propagation mechanisms such as Rayleigh and Stoneley waves. Key findings indicate that microseism propagation from the deep ocean to land is inefficient and highly dependent on the oceanic geological structure.

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.

References (22)

  1. Ardhuin, F., E. Stutzmann, M. Schimmel, and A. Mangeney (2011), Ocean wave sources of seismic noise, J. Geophys. Res., 116, C09004, doi:10.1029/2011JC006952.
  2. Aster, R. C., D. E. McNamara, and P. D. Bromirski (2010), Global trends in extremal microseism intensity, Geophys. Res. Lett., 37, L14303, doi:10.1029/2010GL043472.
  3. Brocher, T. M. (2005), Empirical relations between elastic wavespeeds and density in the Earth's crust, Bull. Seismol. Soc. Am., 95(6), 2081-2092.
  4. Bromirski, P. D. (2009), Earth vibrations, Science, 324(5930), 1026-1027.
  5. Bromirski, P. D., and F. K. Duennebier (2002), The near-coastal microseism spectrum: Spatial and temporal wave climate relationships, J. Geophys. Res., 107(B8), 2166, doi:10.1029/2001JB000265.
  6. Bromirski, P. D., R. E. Flick, and N. Graham (1999), Ocean wave height determined from inland seismometer data: Implications for investigating wave climate changes in the NE Pacific, J. Geophys. Res., 104(C9), 20,753-20,766.
  7. Bromirski, P. D., F. K. Duennebier, and R. A. Stephen (2005), Mid-ocean microseisms, Geochem. Geophys. Geosyst., 6(4), Q04009, doi:10.1029/2004GC000768.
  8. Bromirski, P. D., R. A. Stephen, and P. Gerstoft (2013), Are deep-ocean-generated surface-wave microseisms observed on land?, J. Geophys. Res. Solid Earth, 118, 3610-3629, doi:10.1002/jgrb.50268.
  9. Divins, D. (2003), NGDC total sediment thickness of the world's oceans and marginal seas, NOAA Natl. Geophys. Data Cent., Boulder, Colo.
  10. Gerstoft, P., P. M. Shearer, N. Harmon, and J. Zhang (2008), Global P, PP, and PKP wave microseisms observed from distant storms, Geophys. Res. Lett., 35, L23306, doi:10.1029/2008GL036111.
  11. Hasselmann, K. (1963), A statistical analysis of the generation of microseisms, Rev. Geophys., 1(2), 177-210.
  12. Kim, W. J., P. M. Shannon, B. M. O'Reilly, and J. Hall (2010), Lithospheric density variations and Moho structure of the Irish Atlantic continental margin from constrained 3-D gravity inversion, Geophys. J. Int., 183(1), 79-95.
  13. Komatitsch, D., and J.-P. Vilotte (1998), The spectral element method: An efficient tool to simulate the seismic response of 2D and 3D geological structures, Bull. Seismol. Soc. Am., 88(2), 368-392.
  14. Komatitsch, D., C. Barnes, and J. Tromp (2000), Wave propagation near a fluid-solid interface: A spectral-element approach, Geophysics, 65(2), 623-631.
  15. Longuet-Higgins, M. S. (1950), A theory of the origin of microseisms, Philos. Trans. R. Soc. London, Ser. A, 243(857), 1-35.
  16. Obrebski, M., F. Ardhuin, E. Stutzmann, and M. Schimmel (2012), How moderate sea states can generate loud seismic noise in the deep ocean, Geophys. Res. Lett., 39, L11601, doi:10.1029/2012GL051896.
  17. Saito, T. (2010), Love-wave excitation due to the interaction between a propagating ocean wave and the sea-bottom topography, Geophys. J. Int., 182(3), 1515-1523.
  18. Stacey, R. (1988), Improved transparent boundary formulations for the elastic-wave equation, Bull. Seismol. Soc. Am., 78(6), 2089-2097.
  19. Stephen, R., P. Bromirski, P. Gerstoft, and P. Worcester (2013), Microseism noise in the Philippine Sea, Abstract S11B-2359 paper presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.
  20. Traer, J., P. Gerstoft, P. D. Bromirski, and P. M. Shearer (2012), Microseisms and hum from ocean surface gravity waves, J. Geophys. Res., 117(B11), B11307, doi:10.1029/2012JB009550.
  21. Tromp, J., D. Komattisch, and Q. Liu (2008), Spectral-element and adjoint methods in seismology, Commun. Comput. Phys., 3(1), 1-32.
  22. Zhu, J., J. S. Popovics, and F. Schubert (2004), Leaky Rayleigh and Scholte waves at the fluid-solid interface subjected to transient point loading, J. Acoust. Soc. Am., 116, 2101.