"Forel" Quotes from Famous Books
 ... very concise, comprising only the date, intensity, and region together with principal localities affected. It will contain only the earthquakes of intensities VII to X according to the scale of De Rossi-Forel, and these will be divided into three classes: Class I will be formed by the earthquakes of sufficient force to produce cracks in buildings and to throw down chimneys; they correspond to force VII of De Rossi-Forel. Class II consists of the earthquakes ...
— Catalogue of Violent and Destructive Earthquakes in the Philippines - With an Appendix: Earthquakes in the Marianas Islands 1599-1909 • Miguel Saderra Maso |
