Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Microseism and infrasound generation by cyclones.

Samuel P Bowen1, Jacques C Richard, Jay D Mancini

  • 1Chicago State University, Chicago, Illinois 60628, USA.

The Journal of the Acoustical Society of America
|May 27, 2003
PubMed
Summary

This study introduces a new cylindrical wave theory to explain microseisms and infrasound generated by storms. The theory accurately matches seismic data, offering insights into wave-induced seafloor pressure.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Why do electromagnetic pulses enhance bone growth?

Annals of biomedical engineeringยท2007
See all related articles

Area of Science:

  • Geophysics and Fluid Dynamics
  • Seismology and Acoustics

Background:

  • Microseisms and infrasound are seismic and acoustic waves generated by natural phenomena like oceanic storms.
  • Previous theories, like Longuet-Higgins's, were limited to one-dimensional plane waves, not fully capturing the complexity of storm-generated waves.
  • Bernoulli's principle explains how surface gravity waves create time-dependent pressure on the seafloor.

Purpose of the Study:

  • To develop a two-dimensional cylindrical shear-flow wave theory for microseism and infrasound generation by hurricanes and cyclones.
  • To extend the understanding beyond one-dimensional plane wave theories.
  • To investigate the pressure dynamics on the seafloor induced by oceanic waves.

Main Methods:

  • Development of a linearized two-dimensional cylindrical shear-flow wave theory.

Related Experiment Videos

  • Application of Bernoulli's principle to model wave-induced seafloor pressure.
  • Comparison of theoretical predictions with seismic data from a hurricane and a cyclone.

    • Main Results:

    • The new theory successfully matches the dominant frequency of radiated microseisms observed in seismic data.
    • It differentiates between microseisms at the base of a water column and seismic signals radiated into the crust.
    • The theory provides a framework for understanding storm-generated seismic and acoustic signals.

    Conclusions:

    • The cylindrical shear-flow wave theory offers a more comprehensive explanation for microseism and infrasound generation by storms.
    • Bernoulli's principle plays a crucial role in the pressure dynamics leading to seismic wave generation.
    • This work has implications for interpreting seismic and acoustic observations related to oceanic storms.