释义
n.
Geology a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. The more destructive earthquakes typically have magnitudes between about 5.5 and 8.9; it is a logarithmic scale and a difference of one represents an approximate thirtyfold difference in magnitude.
【地质】 里克特震级,里氏震级。
词源
"1930s: named after Charles F. Richter (1900—85), American geologist."