seismic waves which travel only through the outer layer of the earth are called shear waves.
seismic waves which travel only through the outer layer of the earth are called?
shear waves
in elastodynamics, love waves, named after augustus edward hough love, are horizontally polarized surface waves. the love wave is a result of the interference of many shear waves (s–waves) guided by an elastic layer, which is "welded" to an elastic half space on one side while bordering a vacuum on the other side. in seismology, love waves (also known as q waves ("q"uer: german for lateral)) are surface seismic waves that cause horizontal shifting of the earth during an earthquake. augustus edward hough love predicted the existence of love waves mathematically in 1911. they form a distinct class, different from other types of seismic waves, such as p-waves and s-waves (both body waves), or rayleigh waves (another type of surface wave). love waves travel with a lower velocity than p- or s- waves, but faster than rayleigh waves. these waves are observed only when there is a low velocity layer overlying a high velocity layer/ sub–layers.
love wave
a seismic shadow zone is an area of the earth's surface where seismographs can only barely detect an earthquake after its seismic waves have passed through the earth. when an earthquake occurs, seismic waves radiate out spherically from the earthquake's focus. the primary seismic waves are refracted by the liquid outer core of the earth and are not detected between 104° and 140° (between approximately ) from the epicenter. the secondary seismic waves cannot pass through the liquid outer core and are not detected more than 104° (approximately ) from the epicenter. p waves that have been converted to s-waves on leaving the outer core may be detected beyond 140 degrees.
shadow zone