Skip to main content

Comparative Numerical Study of VLF Signal Propagation Characteristics for Ocean Bottom and Marine Borehole Arrays

  • Chapter
  • 351 Accesses

Abstract

Preliminary results of a numerical investigation of VLF propagation to ocean-bottom and buried sensors are presented. Using an environmental model representing deep ocean basin conditions, both single and multifrequency seismo-acoustic propagation are simulated by means of a new Fast-Field Reflectivity Program. Factors determining correct environmental model selection by using numerical results for sensors (hydrophone and geophone) in vertical and horizontal arrays are discussed. Some implications for VLF propagation of (sub)bottom mode trapping, P to S wave conversion, and multiple reverberations are considered. It is shown that additional studies are required to better identify both signal and noise mechanisms in long-distance VLF propagation.

This is a preview of subscription content, log in via an institution.

Buying options

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   84.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD   109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  • Brocher, T. M., Iwatake, B. T., Gettrust, J. F., Sutton, G. H., and Frazer, L. N., 1982. Comparison of the S/N ratios of low frequency hydrophones and geophones as a function of ocean depth, Bull Seismo. Soc. Am., 71 (5): 1649–1659.

    Google Scholar 

  • Gupta, I. N., 1965. Standing-wave phenomena in short-period seismic noise, Geophysics, 30 (6): 223–245.

    Article  Google Scholar 

  • Hamilton, E. L., 1980. Geoacoustic modelling of the seafloor, J. Acoust. Soc. Am., 68 (5): 1313–1340.

    Article  MathSciNet  ADS  Google Scholar 

  • Hardage, B. A., 1984. Vertical Seismic Profiling. Geophysical Press, Amsterdam and London.

    Google Scholar 

  • Lewis, B. T. R. and McClain, J., 1977. Converted shear waves as seen on ocean bottom seismometers and surface hydrophones, Bull Seismo. Soc. Am., 67: 1291–1302.

    Google Scholar 

  • MacPherson, M. K. and Frisk, G. V., 1980. The contribution of normal modes in the bottom to the acoustic field in the ocean, J. Acoust. Soc. Am., 68 (3): 929–940.

    Article  MathSciNet  ADS  MATH  Google Scholar 

  • Roden, R. B., 1968. Seismic experiments with vertical arrays in boreholes, Geophysics, 33 (2): 270–285.

    Article  ADS  Google Scholar 

  • Schmidt, H. and Tango, G. J., 1986. Efficient global matrix approach to computation of synthetic seismograms, Geophys. J. Roy. Astro. Soc., 84: 331–359.

    Google Scholar 

  • Spencer, T. W., Edwards, C. M., and Sonnad, J. R., 1977. Seismic wave attenuation in non-resolvable cyclic stratification, Geophysics, 42; 939–949.

    Article  ADS  Google Scholar 

  • Stephen, R. A., 1977. The Oblique Seismic Experiment: Theory and Practice, Ph.D. Dissertation, Department of Geophysics, Cambridge University, UK.

    Google Scholar 

  • Stephen, R. A. and Bolmer, S., 1984. The “direct wave root” in marine seismology, Bull Seismo. Soc. Am., 75 (3): 455–461.

    Google Scholar 

  • Tango, G. J. and Schmidt, H., 1985. Exact full wave-theoretic synthetic VSPs using a new fast direct-global-matrix solution, Paper BHG3b, in: SEG’85 Abstracts, pp. 65–67.

    Google Scholar 

  • Tunnell, T. and Tango, G. J., 1985. Predicted energy partitioning of bottom-interacting VLF seismo-acoustic energy, paper, in: Proceedings, NATO ASI Conference on VLF Seismo-Acoustic Propagation, La Spezia, Italy, 18–23 June 1985, Plenum Press, New York.

    Google Scholar 

  • Ursin, B., Stephen, R., Schmidt, H., Tango, G., and Arnsten, B., 1986. Comparison of asymtotic ray, finite difference and discrete wavenumber algorithms for vertical seismic profiling synthesis, paper presented at the USN-SEG Symposium on High-Resolution Marine Seismology, 27 February, 1986, NSTL, Mississippi

    Google Scholar 

  • Wagstaff, R. A., 1981. Low frequency ambient noise in the deep sound channel—the missing component, J. Acoust. Soc. Am., 69: 1009–1004.

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1987 Plenum Press, New York

About this chapter

Cite this chapter

Tango, G.J., Ali, H.B., Werby, M.F. (1987). Comparative Numerical Study of VLF Signal Propagation Characteristics for Ocean Bottom and Marine Borehole Arrays. In: Merklinger, H.M. (eds) Progress in Underwater Acoustics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1871-2_27

Download citation

  • DOI: https://doi.org/10.1007/978-1-4613-1871-2_27

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4612-9043-8

  • Online ISBN: 978-1-4613-1871-2

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics