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226 SEISMIC MICROZONING USING NUMERICAL MODELLING
Figure 8.1 Italian seismotectonic model identified by 80 seismic source zones (Scandone
et al., 1996).
governed by normal faults. Along all the Apennines some “transfer” zones
(domain 2—zones 25, 26, 40, 43, 54), transverse to the chain elongation,
interrupt the continuity of the chain structure, with a regime of prevalently
transcurrent faults. One of the most important is the “Ortona Roccamonfina”
lineament (zone 55), that represents the southern boundary of domain 3 (Patacca
et al., 1992). In the northern Sicily (domain 8—zones 74, 75, 76; Albarello et al.,
1993) strike-slip fault mechanisms prevail. The foreland domain (9—zones 59,
60, 61, 77, 78, 79, 80) is easily recognizable from the Adriatic sea to the Ionian
sea and in Sicily it is characterized by dip-slip and strike-slip mechanisms. The
Vesuvius and Etna volcanic areas (domain 10—zones 56, 73) are characterized
by high activity rates and low to moderate magnitudes.
