Resumen
We present quantitative estimates of the stretching rate in central Italy from active faults andearthquake data. Using slip rates, we estimated the horizontal component of the deformation for eachfault. Then, using the historical catalogue, we estimated the average displacement for each earthquakeand obtained the stretching rates for the last 1000 years of seismicity. Errors in the estimation of sliprates have also been considered. Geological and seismological stretching rate curves show a similar pattern;significant local divergences could be attributed to seismic gaps. We consider the geological databaseof normal active faults and the historical earthquake catalogue in central Italy complete enoughand useful for seismic hazard purpose.
