神岡鉱山における100メートルレーザー伸縮計について

Le résumé fourni par la source

We are now installing two orthogonal laser strainmeters, each of which has a length of 100m, in a deep tunnel at the Kamioka Mine, Gifu prefecture. The laser frequency is locked on an iodine absorption band of saturation spectroscopy and the stability of ~ 10-13 isattained. The light paths of the laser strainmeter system are enclosed in stainless steel pipes. Inside pressure is kept to be 10-5 Pa.Consequently, quantitative measurement of crustal strains of the order of 10-13 becomes possible by the laser strainmeter system atKamioka. This resolving power corresponds to that of the superconducting gravimeter. Therefore, we can expect to determineparameters of the fluid core resonance, core modes and core undertone etc.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.