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http://hdl.handle.net/2122/4090
Authors: | Amoruso, A.* Crescentini, L.* D'Anastasio, E.* De Martini, P. M.* |
Title: | Clues of postseismic relaxation for the 1915 Fucino earthquake (central Italy) from modeling of leveling data | Journal: | Geophysical Research Letters | Series/Report no.: | / 32 (2005) | Publisher: | AGU | Issue Date: | 2005 | DOI: | 10.1029/2005GL024139 | Keywords: | postseismic slip leveling data 1915 Fucino earthquake modeling |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | Abstract: | We study five high precision leveling lines located around the epicentral area of 13 January 1915, Mw = 6.7 Fucino earthquake (Italy), that possibly recorded late stage postseismic relaxation movements. The geodetic signal is expected to comprise both large-scale uplift of the Apennines and postseismic relaxation effects. In order to verify this hypothesis and to estimate the amount of each contribution, we compute gravitational visco-elastic postseismic relaxation by inverting leveling data. Results indicate that the elastic upper crust is relatively thin (about 10 km) and post-seismic contribution could be set at 30% of the geodetic signal. Model parameters are consistent with previous knowledge of the 1915 Fucino earthquake source, local seismic hypocentral determinations and crustal models derived from surface waves. |
Appears in Collections: | Article published / in press |
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