Community Research and Development Information Service - CORDIS

FP5

CORSEIS Report Summary

Project ID: EVG1-CT-1999-00002
Funded under: FP5-EESD
Country: Italy

Identification of paleoearthquakes in trenches on the Helike and Aigion faults scarps

Paleo-seismological trenches have been opened and road cuts have been studied at different locations along the Elike and Aigion faults. Trenches from previous studies have been re-analysed too. Dendro-chronologically corrected radiocarbon ages (a list of which is contained in the Database) are used to constrain the timing of the recognised paleo-earthquakes.

The obtained results are:
- East Eliki fault: Most recent earthquake 1861, penultimate 980-1260, previous 100BC-100AD, slip per event 0.6-2.4m, vertical slip rate 1.3-4.6mm/yr.
- West Eliki fault: At least two events during Holocene, slip per event >0.4m.
- Aigion fault: Two, possibly three events between 1800 and 1160 AD, slip per event 0.4-0.7m, vertical slip rate 0.9-4.9mm/yr.

The study of abrupt subsidence events, (possibly triggered by co-seismic subsidence) in the Eliki plain suggest evidence for one event in the 5th-6th century besides the 373BC historical event. These events would be attributed to the West Eliki fault.

Reported by

Istituto Nazionale di Geofisica
Via Vigna Murata 605
00143 Rome
Italy
See on map
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top