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Visualisation of active normal fault scarps in the Apennines, Italy: a key to assessment of tectonic strain release and earthquake rupture.
Abstract:
Active normal fault scarps that offset 12-18 ka landforms in the Apennines, Italy, have been mapped into Google Earth to provide precise locations for structures responsible for tectonic strain release and earthquake rupture. Climate change at the end of the last glacial maximum (12-18 ka) reduced erosion and sedimentation rates below a critical threshold allowing preservation of displacements produced by surface ruptures to palaeoearthquakes. The resultant fault scarps, which record the surface displacements from multiple earthquakes, allow determination of the spatial variation in the rates of fault slip, a parameter critical to assessment of how long-term strain release recorded in the geomorphology (10
DOI:
10.3809/jvirtex.2008.00197