| 释义 |
> as lemmasmodified Mercalli scale The scale proposed by Mercalli was modified by A. Sieberg in 1923 ( Erdbebenkunde 102–4), and again by H. O. Wood and F. Newman in 1931 (see quot.), when the acceleration limits for the grades were omitted and the defining observational phenomena regrouped. This 1931 scale was named the modified Mercalli scale.< |