M
m: Extension to Love waves of the concept of a variable-period mantle magnitude |
| |
| Authors: | Emile A Okal Jacques Talandier |
| |
| Institution: | 1. Department of Geological Sciences, Norhtwestern University, 60208, Evanston, Illinois, USA
2. Laboratoire de Géophysique, Commissariat à l'Energie Atomique, Papeete, Bo?te Postale 640, Tahiti, French Polynesia
|
| |
| Abstract: | We extend to Love waves the concept of the mantle magnitudeM
mintroduced recently for Rayleigh waves. Spectral amplitudesX( ) of Love waves in the 50–300 s period range are measured on broad-band records from major events. A distance correctionC
D, regionalized to reflect the influence of different tectonic paths, and a source correctionC
S, compensating for the variation of excitation with period are effected; the exact geometry and depth of the event are however ignored. The resulting expression
|
|
