Publication Date:
2017-04-04
Description:
The elevation of the Capo Vaticano coastal terraces (Tyrrhenian
coast, central Calabria) is the result of a combination of
regional uplift and repeated coseismic displacement. We
subtract the regional uplift from the total uplift (maximum
average uplift rates: 0.81–0.97 mm a)1 since c. 0.7 Ma) and
obtain the residual fault-related displacement. Then, we model
the residual displacement to provide constraints on the location
and geometry of the seismogenic source of the 1905 M7
earthquake, the strongest – and still poorly understood –
earthquake of the instrumental era in this area. We try four
different potential sources for the dislocation modelling and
find that (1) three sources are not compatible with the
displacement observed along the terraces and (2) the only
source consistent with the local deformation is the 100 -
striking Coccorino Fault. We calculate average long-term
vertical slip rates of 0.2–0.3 mm a)1 on the Coccorino Fault
and estimate an average recurrence time of one millennium
for a 1905-type earthquake.
Description:
Published
Description:
378-389
Description:
2T. Tettonica attiva
Description:
JCR Journal
Description:
restricted
Keywords:
1905 earthquake
;
marine terraces
;
coseismic displacement
;
04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article