EntityQ656836· pop 20· linked from 35 articlesLehmann discontinuitySign in to saveabrupt increase of P-wave and S-wave velocities at the depth of 220±30 kmConnectionsinternal structure of EarthEntityinner coreEntitylower mantleEntityoceanEntitycontinentEntityInternational Standard Book NumberEntitydigital object identifierEntityEarth's crustEntityInternational Standard Serial NumberEntitygeophysicsEntityUniversity of California, Los AngelesEntitymantleEntityasthenosphereEntitybibcodeEntityphase changeEntityInge LehmannEntityCambridge University PressEntityMohorovičić discontinuityEntityanisotropyEntitycontinental crustEntityCategoriesStructure of the Earth