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  2. Rayleigh wave - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_wave

    Rayleigh waves are widely used for materials characterization, to discover the mechanical and structural properties of the object being tested – like the presence of cracking, and the related shear modulus. This is in common with other types of surface waves. [7] The Rayleigh waves used for this purpose are in the ultrasonic frequency range.

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  4. Seismic magnitude scales - Wikipedia

    en.wikipedia.org/wiki/Seismic_magnitude_scales

    S waves may take an hour to reach a point 1000 km away. Both of these are body-waves, that pass directly through the earth's crust. Following the S waves are various kinds of surface-waves – Love waves and Rayleigh waves – that travel only at the earth's surface. Surface waves are smaller for deep earthquakes, which have less interaction ...

  5. Reflection seismology - Wikipedia

    en.wikipedia.org/wiki/Reflection_seismology

    Low velocity, low frequency and high amplitude Rayleigh waves are frequently present on a seismic record and can obscure signal, degrading overall data quality. They are known within the industry as ‘Ground Roll’ and are an example of coherent noise that can be attenuated with a carefully designed seismic survey. [ 13 ]

  6. Seismic noise - Wikipedia

    en.wikipedia.org/wiki/Seismic_noise

    Research on the origin of seismic noise [1] indicates that the low frequency part of the spectrum (below 1 Hz) is principally due to natural causes, chiefly ocean waves.In particular the globally observed peak between 0.1 and 0.3 Hz is clearly associated with the interaction of water waves of nearly equal frequencies but probating in opposing directions.

  7. Maps show where fires are burning right now in L.A. area - AOL

    www.aol.com/maps-show-where-palisades-fire...

    The Today Show. Instinctive, honest and fierce: What to know about the Scorpio personality. Lighter Side. People. NYC’s hottest mascots Ellie the Elephant and Grimace spark romance rumors.

  8. Seismic wave - Wikipedia

    en.wikipedia.org/wiki/Seismic_wave

    a wave that travels along the boundary between the crust and mantle P: a P wave in the mantle p: a P wave ascending to the surface from the focus R: a Rayleigh wave S: an S wave in the mantle s: an S wave ascending to the surface from the focus w: the wave reflects off the bottom of the ocean No letter is used when the wave reflects off of the ...

  9. Renowned election guru Nate Silver reveals latest forecast ...

    www.aol.com/renowned-election-guru-nate-silver...

    The national polling average released by Silver on Sunday morning showed Harris over Trump 48.5% to 47.6%. But he cautioned his model doesn’t care about the national polls as much at this stage.