地质科学2012，Vol.47Issue(1)：13-21,9.
极摩尔圆法计算二维平均运动学涡度
2-D mean vorticity numbers calculated from construction of polar Mohr diagram
摘要
Abstract
We propose a contour map of 2-D mean kinematic vorticity number ( Wm ) based on the formula Wm =cos[ arctan( l-Rs×tan2a)/( ( 1 +Rs ) ×tana) ] deduced from polar Mohr diagram, Rs and a are the finite strain ellipse ratio and S-C angle respectively. The map and the formula provide easy tools for vorticity analysis from finite strain in rocks. We also propose two parameters to distinguish shear types ( simple shear, pure shear, thinning general shear and thickening general shear) :a for the instantaneous strain and Rs×tan a for finite strain.关键词
平均运动学涡度/极摩尔圆/有限应变/剪切类型Key words
Mean vorticity number/Polar Mohr diagram/Finite strain/Shear types分类
天文与地球科学引用本文复制引用
刘江,张进江,张波..极摩尔圆法计算二维平均运动学涡度[J].地质科学,2012,47(1):13-21,9.基金项目
国家自然科学基金项目(编号:90714006)资助. （编号:90714006）
