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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/nhess-2016-313
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/nhess-2016-313
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  26 Oct 2016

26 Oct 2016

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This discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The manuscript was not accepted for further review after discussion.

Shallow subsurface geology and seismic microzonation in a deep continental basin. The Avezzano Town, Fucino basin (central Italy)

Paolo Boncio1, Giuliano Milana2, Fabrizio Cara2, Giuseppe Di Giulio3, Deborah Di Naccio3, Daniela Famiani2, Francesca Liberi1, Fabrizio Galadini2, Gianluigi Rosatelli1, and Maurizio Vassallo3 Paolo Boncio et al.
  • 1Dep. DiSPUTer, "G. D'Annunzio" University of Chieti-Pescara, Chieti, 66013, Italy
  • 2INGV, Rome, 00143, Italy
  • 3INGV, L'Aquila, 67100, Italy

Abstract. We present detailed geological investigations aimed at the reconstruction of the shallow subsurface geology, and associated local seismic hazard, of the Avezzano town in the Quaternary Fucino basin (central Apennines). This work shows a basic (Level 1) seismic microzonation (SM) of the Avezzano town, focusing the attention on geologic constraints. We also discuss some methodological procedures of SM.

Level 1 SM involves a reconstruction of the subsurface geological model achieved by a multidisciplinary approach synthesized in two main thematic maps and geologic sections. The first map, containing essential geologic information, is formed by overlapping layers (geological units, litho-technical units, and geomorphological/structural features). The second map is a summary map, easily accessible to non-geologist earthquake scientists/technicians, which synthesizes surface geology, subsurface data and resonance frequencies into homogeneous microzones. The two maps are tools for land and urban planning.

The Avezzano area provides a case study of shallow subsurface geology and site effects in a deep continental basin environment, and is of potential interest for similar geologic contexts worldwide. Within the investigated area, almost all the possible earthquake-induced effects can occur, such as (a) stratigraphic amplifications in a wide range of resonance frequencies (from 0.4 to > 10 Hz); (b) liquefaction; (c) coseismic surface faulting; (d) basin-edge effects; and (e) slope instability.

Paolo Boncio et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Paolo Boncio et al.

Paolo Boncio et al.

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Short summary
The paper discusses geological aspects, methodological procedures of seismic microzonation and the implications on seismic site response of an urbanized area in a geologic environment of deep continental basin (the Avezzano town in the Fucino continental basin of central Apennines, Italy). The paper is of potential interest for the geological community and also for non-geologist scientists/technicians/decision makers working in the field of earthquake hazard.
The paper discusses geological aspects, methodological procedures of seismic microzonation and...
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