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Lamb waves propagate in solid plates or spheres. [1] They are elastic waves whose particle motion lies in the plane that contains the direction of wave propagation and the direction perpendicular to the plate. In 1917, the English mathematician Horace Lamb published his classic analysis and description of acoustic waves of this type. Their ...
Rayleigh waves are distinct from other types of surface or guided acoustic waves such as Love waves or Lamb waves, both being types of guided waves supported by a layer, or longitudinal and shear waves, that travel in the bulk. Rayleigh waves have a speed slightly less than shear waves by a factor dependent on the elastic constants of the ...
Seiches in harbours can be caused by long-period or infragravity waves, which are due to subharmonic nonlinear wave interaction with the wind waves, having periods longer than the accompanying wind-generated waves. [4] A standing wave (black) depicted as a sum of two propagating waves traveling in opposite directions (blue and red).
A new study has revealed that a marine heat wave caused a massive die-off of common murres around Alaska between 2014-2016. Biologists say the tuxedo-styled birds dive and swim in the ocean to eat ...
Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean' and γραφή (graphḗ) 'writing'), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the ocean, including its physics, chemistry, biology, and geology.
Ground waves are radio waves propagating parallel to and adjacent to the surface of the Earth, following the curvature of the Earth.This radiative ground wave is known as Norton surface wave, or more properly Norton ground wave, because ground waves in radio propagation are not confined to the surface.
Coral reefs, the so-called "rainforests of the sea", occupy less than 0.1 percent of the world's ocean surface, yet their ecosystems include 25 percent of all marine species. [85] The best-known are tropical coral reefs such as Australia's Great Barrier Reef , but cold water reefs harbour a wide array of species including corals (only six of ...
Rogue waves (also known as freak waves or killer waves) are large and unpredictable surface waves that can be extremely dangerous to ships and isolated structures such as lighthouses. [1] They are distinct from tsunamis , which are long wavelength waves, often almost unnoticeable in deep waters and are caused by the displacement of water due to ...