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Detailed Reference Information |
Amoruso, A., Crescentini, L., D'Anastasio, E. and De Martini, P.M. (2005). Clues of postseismic relaxation for the 1915 Fucino earthquake (central Italy) from modeling of leveling data. Geophysical Research Letters 32: doi: 10.1029/2005GL024139. issn: 0094-8276. |
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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. |
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Abstract |
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Keywords
Geodesy and Gravity, Transient deformation (6924, 7230, 7240), Geodesy and Gravity, Tectonic deformation, Tectonophysics, Rheology, crust and lithosphere |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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