Before revision: From this a map showing areas of likely damage can be prepared within minutes of an actual earthquake.. Other magnitude scales (Richter) Many earthquake magnitude scales have been developed or proposed, with some never gaining broad acceptance and remaining only as obscure references in historical catalogs of earthquakes.
After revision: From this a map showing areas of likely damage can be prepared within minutes of an actual earthquake.. Other magnitude scales Many earthquake magnitude scales have been developed or proposed, with some never gaining broad acceptance and remaining only as obscure references in historical catalogs of earthquakes.