抄録
The period characteristics of the amplitude function of Love-waves were obtained by the use of the dispersion curves. The quarter wave-length law may be approximated by the period at the AIRY phase, but it can be better approximated by the period at the phase corresponding to the maximum of the amplitude function. These approximations, moreover, become respectively all the better with the increase of the rigidity ratio between superficial and lower strata. Differences between the maximum of the amplitude function and the maximum amplitude are also considered.
