Geological and geophysical characterisation of the Paganica - San Gregorio area after the April 6, 2009 L'Aquila earthquake (Mw 6.3, central Italy): implications for site response

被引：27

作者：

Boncio, P. ^{[1
]}

Pizzi, A. ^{[2
]}

Cavuoto, G. ^{[3
]}

Mancini, M. ^{[3
]}

Piacentini, T. ^{[2
]}

Miccadei, E. ^{[2
]}

Cavinato, G. P. ^{[3
]}

Piscitelli, S. ^{[4
]}

Giocoli, A. ^{[4
]}

Ferretti, G. ^{[5
]}

De Ferrari, R. ^{[5
]}

Gallipoli, M. R. ^{[4
]}

Mucciarelli, M. ^{[6
]}

Di Fiore, V. ^{[7
]}

Franceschini, A. ^{[8
]}

Pergalani, F. ^{[9
]}

Naso, G. ^{[10
]}

Giaccio, B. ^{[3
]}

Moscatelli, M. ^{[3
]}

Spadoni, M. ^{[3
]}

Romano, G. ^{[4
]}

Spallarossa, D. ^{[5
]}

Pasta, M. ^{[5
]}

Pavan, M. ^{[5
]}

Scafidi, D. ^{[5
]}

Barani, S. ^{[5
]}

Eva, C. ^{[5
]}

Compagnoni, M. ^{[9
]}

Campea, T. ^{[11
]}

Di Berardino, G. R. ^{[11
]}

Mancini, T. ^{[11
]}

Marino, A. ^{[11
]}

Montefalcone, R. ^{[11
]}

Mosca, F. ^{[11
]}

机构：

[1] Univ G dAnnunzio, Dipartimento Sci, Chieti, Italy

[2] Univ G dAnnunzio, I DiGAT, Chieti, Italy

[3] CNR, Ist Geol Ambientale & Geoingn, Rome, Italy

[4] CNR, Ist Metodol Anal Ambientale, Potenza, Italy

[5] Univ Genoa, Dip Te Ris, Genoa, Italy

[6] Univ Basilicata, DiSGG, I-85100 Potenza, Italy

[7] CNR, Ist Ambiente Marino Costiero, I-80125 Naples, Italy

[8] Provincia Autonoma Trento, Serv Geol, Trento, Italy

[9] Politecn Milan, Dipartimento Ingn Strutturale, Milan, Italy

[10] Dipartimento Protez Civile, Rome, Italy

[11] Ordine Geol Reg Abruzzo, Pescara, Italy

来源：

BOLLETTINO DI GEOFISICA TEORICA ED APPLICATA | 2011年 / 52卷 / 03期

关键词：

L'Aquila earthquake; geophysical measurements; soil mechanical properties; site amplification central Italy; CELANO; INVERSION;

D O I：

10.4430/bgta0014

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We present the results of a geological and geophysical investigation, aimed at the seismic microzonation for post-earthquake reconstruction, of the Paganica-San Gregorio area damaged by the April 6, 2009 L'Aquila earthquake. The area is characterised by a thick pile of lacustrine and alluvial deposits (up to 190 m thick or more) accumulated syntectonically within a NW-SE extensional tectonic basin and covering a morphologically and structurally articulated carbonate bedrock. The extensive cover of continental deposits justifies the widespread local stratigraphic amplifications of the ground motion measured by passive seismology (weak motion and noise), with some apparently contradicting results such as the absence of significant amplification peaks within the large Paganica alluvial fan. In general, we found an excellent agreement between the results from the spectral ratio analysis of the ground motion and the structural-stratigraphic setting obtained by independent geological (surface and well data) and geophysical (ERT) constraints. Besides the 1D amplification effects, spectral ratio analyses revealed significant amplifications over a broad frequency range along both the horizontal and vertical components suggesting that 2D (or possibly 3D) site effects are related to the architecture of the buried bedrock.

引用

页码：491 / 512

页数：22

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