Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10639
Authors: Civico, Riccardo* 
Sapia, Vincenzo* 
Di Giulio, Giuseppe* 
Villani, Fabio* 
Pucci, Stefano* 
Baccheschi, Paola* 
Amoroso, Sara* 
Cantore, Luciana* 
Di Naccio, Deborah* 
Hailemikael, S.* 
Smedile, Alessandra* 
Vassallo, Maurizio* 
Marchetti, Marco* 
Pantosti, Daniela* 
Title: Geometry and evolution of a fault-controlled Quaternary basin by means of TDEM and single-station ambient vibration surveys: The example of the 2009 L'Aquila earthquake area, central Italy
Issue Date: 2017
Series/Report no.: /122(2017)
DOI: 10.1002/2016JB013451
URI: http://hdl.handle.net/2122/10639
Keywords: Middle Aterno Valley
TDEM
seismic vibration measurements
3D Bedrock mapping
Subject Classification04.02. Exploration geophysics 
Abstract: We applied a joint survey approach integrating time domain electromagnetic soundings and single-station ambient vibration surveys in the Middle Aterno Valley (MAV), an intermontane basin in central Italy and the locus of the 2009 L’Aquila earthquake. By imaging the buried interface between the infilling deposits and the top of the pre-Quaternary bedrock, we reveal the 3-D basin geometry and gain insights into the long-term basin evolution. We reconstruct a complex subsurface architecture, characterized by three main depocenters separated by thresholds. Basin infill thickness varies from ~200–300m in the north to more than 450m to the southeast. Our subsurface model indicates a strong structural control on the architecture of the basin and highlights that the MAV experienced considerable modifications in its configuration over time. The buried shape of the MAV suggests a recent and still ongoing predominant tectonic control by the NW-SE trending Paganica-San Demetrio Fault System (PSDFS), which crosscuts older ~ENE and NNE trending extensional faults. Furthermore, we postulate that the present-day arrangement of the PSDFS is the result of the linkage of two previously isolated fault segments. We provide constraints on the location of the southeastern boundary of the PSDFS, defining an overall ~19 km long fault system characterized by a considerable seismogenetic potential and a maximum expected magnitude larger than M6.5. This study emphasizes the benefit of combining two easily deployable geophysical methods for reconstructing the 3-D geometry of a tectonically controlled basin. Our joint approach provided us with a consistent match between these two independent estimations of the basin substratum depth within 15%.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Civico_JGR_2017.pdf3.88 MBAdobe PDFView/Open
Show full item record

Page view(s)

53
Last Week
0
Last month
4
checked on Sep 17, 2018

Download(s)

15
checked on Sep 17, 2018

Google ScholarTM

Check

Altmetric