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http://hdl.handle.net/2122/4218| Authors: | Malagnini, L.* Scognamiglio, L.* Mercuri, A.* Akinci, A.* Mayeda, K.* |
Title: | Strong evidence for non-similar earthquake source scaling in central Italy | Journal: | Geophysical Research Letters | Series/Report no.: | /35 (2008) | Publisher: | American Geophysical Union | Issue Date: | 2008 | DOI: | 10.1029/2008GL034310 | Keywords: | Self-similarity | Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics | Abstract: | scaling of seismic sources of the Central Apennines (Italy) is investigated using broadband seismograms from the Colfiorito sequence (4<=Mw<=6 ). Our results are not consistent with self-similar scaling, and can be described by the following relationship: M0~fc^-(3_epsilon), where epsilon=1.7+-0.3 . We speculate that dynamic fault lubrication by fluid pressurization may be responsible for such extreme behavior, and use our results for the calibration of a weak-motion-based predictive relationship for the ground motion ( Mw<=4.1) up to Mw~6 for this region. |
| Appears in Collections: | Article published / in press |
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