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- Sound_speed_gradient abstract "In acoustics, the sound speed gradient is the rate of change of the speed of sound with distance, for example with depth in the ocean,or height in the Earth's atmosphere. A sound speed gradient leads to refraction of sound wavefronts in the direction of lower sound speed, causing the sound rays to follow a curved path. The radius of curvature of the sound path is inversely proportional to the gradient.When the sun warms the Earth's surface, there is a negative temperature gradient in atmosphere. The speed of sound decreases with decreasing temperature, so this also creates a negative sound speed gradient. The sound wave front travels faster near the ground, so the sound is refracted upward, away from listeners on the ground, creating an acoustic shadow at some distance from the source. The opposite effect happens when the ground is covered with snow, or in the morning over water, when the sound speed gradient is positive. In this case, sound waves can be refracted from the upper levels down to the surface.In underwater acoustics, speed of sound depends on pressure (hence depth), temperature, and salinity of seawater, thus leading to vertical speed gradients similar to those that exist in atmospheric acoustics. However, when there is a zero sound speed gradient, values of sound speed have the same \"isospeed\" in all parts of a given water column (there is no change in sound speed with depth). The same effect happens in an isothermal atmosphere with the ideal gas assumption.".
- Sound_speed_gradient wikiPageID "11685459".
- Sound_speed_gradient wikiPageLength "2831".
- Sound_speed_gradient wikiPageOutDegree "19".
- Sound_speed_gradient wikiPageRevisionID "642979962".
- Sound_speed_gradient wikiPageWikiLink Acoustic_shadow.
- Sound_speed_gradient wikiPageWikiLink Acoustics.
- Sound_speed_gradient wikiPageWikiLink Atmosphere_of_Earth.
- Sound_speed_gradient wikiPageWikiLink Barometric_formula.
- Sound_speed_gradient wikiPageWikiLink Category:Acoustics.
- Sound_speed_gradient wikiPageWikiLink Ideal_gas.
- Sound_speed_gradient wikiPageWikiLink Ocean.
- Sound_speed_gradient wikiPageWikiLink Radius_of_curvature_(mathematics).
- Sound_speed_gradient wikiPageWikiLink Refraction.
- Sound_speed_gradient wikiPageWikiLink Refraction_(sound).
- Sound_speed_gradient wikiPageWikiLink SOFAR_channel.
- Sound_speed_gradient wikiPageWikiLink Seawater.
- Sound_speed_gradient wikiPageWikiLink Speed_of_sound.
- Sound_speed_gradient wikiPageWikiLink Temperature_gradient.
- Sound_speed_gradient wikiPageWikiLink Underwater_acoustics.
- Sound_speed_gradient wikiPageWikiLink Wavefront.
- Sound_speed_gradient wikiPageWikiLink Wind_gradient.
- Sound_speed_gradient wikiPageWikiLinkText "Sound refraction".
- Sound_speed_gradient wikiPageWikiLinkText "Sound speed gradient".
- Sound_speed_gradient wikiPageWikiLinkText "sound speed gradient".
- Sound_speed_gradient wikiPageUsesTemplate Template:Hydroacoustics.
- Sound_speed_gradient wikiPageUsesTemplate Template:Reflist.
- Sound_speed_gradient wikiPageUsesTemplate Template:Science-stub.
- Sound_speed_gradient subject Category:Acoustics.
- Sound_speed_gradient hypernym Rate.
- Sound_speed_gradient type Ship.
- Sound_speed_gradient type Acoustic.
- Sound_speed_gradient type Dynamic.
- Sound_speed_gradient comment "In acoustics, the sound speed gradient is the rate of change of the speed of sound with distance, for example with depth in the ocean,or height in the Earth's atmosphere. A sound speed gradient leads to refraction of sound wavefronts in the direction of lower sound speed, causing the sound rays to follow a curved path.".
- Sound_speed_gradient label "Sound speed gradient".
- Sound_speed_gradient sameAs Q7564811.
- Sound_speed_gradient sameAs m.02rny8h.
- Sound_speed_gradient sameAs Q7564811.
- Sound_speed_gradient wasDerivedFrom Sound_speed_gradient?oldid=642979962.
- Sound_speed_gradient isPrimaryTopicOf Sound_speed_gradient.