Verification of macroseismic methods on five ML > 5 instrumental earthquakes in France |
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| Institution: | 1. Dipartimento di Scienze, Università Roma Tre, Largo San Leonardo Murialdo 1, IT-00146 Rome, Italy;2. Geological Survey of Iran, Azadi Square, Meraj Avenue, 13185-1494 Tehran, Iran;3. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, IT-00143 Rome, Italy |
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| Abstract: | Macroseismic data available for five of the most recent ML > 5 earthquakes that occurred in the Pyrenees and in the Alps, were analyzed using the Sponheuer and the Levret relationship to estimate depth and magnitude respectively. The aim of this paper is to verify if simple and robust macroseismic methods used on recent instrumental earthquakes may provide a good tool to calibrate historical events in France. The excellent agreement found between macroseismic and instrumental estimates shows that macroseismic data of historical events may provide the means to lengthen the instrumental catalogue and better constrain the recurrence rates of earthquakes in moderate seismic rate regions. |
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