Seismic Anisotropy in Salt Structures Due to Preferred Crystal Orientation
نویسنده
چکیده
LÕanalyse de la texture du sel gemme naturel et du halite dform exprimentalement a montr quÕil se produit une orientation prfrentiel le du rseau dans les cristaux de halite. Les paramtres dÕlasticit pour une srie dÕagrgats polycristallins de halite sont calculs en utilisant les fonctions de distribution dÕorientation. Ils sont alors utiliss pour laborer des modles sismiques dans lesquels sont tracs des rayons afin dÕtudier les effets potentiels de lÕanisotropie sismique dans les structures salifres. Les modles salifres anisotropes montrent une variation significative dans le temps de propagation par rapport au modle salifre isotrope, et un effet important de birfringence des ondes transversales est prdit.
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