Open AccessCoupled Rayleigh‐Love Second Modes
Author(s) -
Crampin S.
Publication year - 1967
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1967.tb03118.x
Subject(s) - geology , geophysics , anisotropy , rayleigh wave , isotropy , love wave , convection , seismic anisotropy , transverse plane , surface wave , crust , seismic wave , longitudinal wave , mantle (geology) , wave propagation , seismology , mechanics , mechanical wave , physics , optics , engineering , structural engineering
Summary Second‐mode seismic wave trains along many paths in Eurasia are observed to have a phase relationship between the vertical motion and the transverse horizontal motion which cannot exist for elastic waves in isotropic layered media. These coupled, or generalized, surface waves are caused by an anisotropic layer immediately beneath the crust. It is suggested that this anisotropy is the result of orientation of crystalline mantle material by convection currents.