scales of earthquake intensity
11Peak ground acceleration — (PGA) is a measure of earthquake acceleration on the ground and an important input parameter for earthquake engineering, also known as the design basis earthquake ground motion (DBEGM)[1] Unlike the Richter and moment magnitude scales, it is not… …
12Moment magnitude scale — Part of a series on earthquakes Types Foreshock • Aftershock • Blind thrust Doublet • Interplate • …
13Charles Francis Richter — Charles Richter, c.1970 Born April 26, 1900( …
14magnitude — (mag) 1. a unit traditionally used in astronomy to express the apparent brightness of stars, planets, and other objects in the sky. For centuries, the brightest stars were said to be of the first magnitude, with fainter ones of the second… …
15List of humorous units of measurement — This is a sub article to List of unusual units of measurement Many comedians and humour writers have made use of, or invented, units of measurement intended primarily for their humour value. This is a list of such units invented by sources that… …
16Richter magnitude scale — Part of a series on earthquakes Types Foreshock • Aftershock • Blind thrust Doublet • Interplate • …
17solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… …
18river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
19Tornado — This article is about the weather phenomenon. For other uses, see Tornado (disambiguation). For the current tornado season, see Tornadoes of 2011 …
20arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
