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http://hdl.handle.net/2122/2058| Authors: | Monna, S.* Filippi, L.* Beranzoli, L.* Favali, P.* |
Title: | Rock properties of the upper-crust in Central Apennines (Italy) derived from high-resolution 3-D tomography | Journal: | Geophysical Research Letters | Series/Report no.: | VOL. 30, NO. 7 | Publisher: | American Geophysical Union | Issue Date: | 11-Apr-2003 | DOI: | 10.1029/2002GL016780 | URL: | http://www.agu.org/pubs/crossref/2003/2002GL016780.shtml | Keywords: | Physical properties of rocks Seismicity and seismotectonics |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | Abstract: | High-resolution 3-D P and S-wave velocity models of a central sector of the Apennines (Central Italy) are computed by inverting first arrival times from an aftershock sequence (September–December, 1997) following the Mw 5.7 and Mw 6.0 Umbria-Marche earthquakes that occurred on September 26, 1997. The high quality of the data set, especially for the S-wave, allows us to compute 3-D variations in Vp, Vp/Vs and Vp · Vs. The anomalies can be interpreted as lateral changes in rock type and fracturing, which control fluid diffusion and variation in pore pressure. This is in agreement with a poro-elastic view that can be inferred from the spatio-temporal evolution of the seismic sequence. |
| Appears in Collections: | Article published / in press |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2002GL016780.pdf | 241.06 kB | Adobe PDF | View/Open |
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