Fast Determination of Moment Tensors and Rupture History: What Has Been Learned from the 6 April 2009 L'Aquila Earthquake Sequence

Scognamiglio, Laura; Tinti, Elisa; Michelini, Alberto; Dreger, Douglas S.; Cirella, A.; Cocco, M.; Mazza, Salvatore; Piatanesi, A.

doi:10.1785/gssrl.81.6.892

Cited by 87 publications

(100 citation statements)

References 21 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Geological data from surface analyses were integrated with subsurface data from deep boreholes drilled by (GEMINA, 1963) for lignite exploration and from additional shallow boreholes (>400 wells) drilled in the area just after the L'Aquila 2009 earthquake (6 April 2009, Mw 6.1; Scognamiglio et al, 2010). A seismic reflection profile (Pettino 1), previously interpreted by Tallini et al (2012), was re-examined to evaluate seismic facies within the basin.…”

Section: Methodsmentioning

confidence: 99%

New insights into the onset and evolution of the central Apennine extensional intermontane basins based on the tectonically active L’Aquila Basin (central Italy)

et al. 2017

View full text Add to dashboard Cite

show abstract

Section: Methodsmentioning

confidence: 99%

New insights into the onset and evolution of the central Apennine extensional intermontane basins based on the tectonically active L’Aquila Basin (central Italy)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Scognamiglio et al (2010) reduced M w of the 2009 L'Aquila event from 6.3 to 6.1 because an overestimation of slip produced strongly amplified waveforms in simulated time series. This reduction is quite plausible, noting that the results of our simulations based on the 3D model are intrinsically affected by a possible incompatibility between source and structural models.…”

Section: Simulations With a 3d Model: Effects Of Geological Structuresmentioning

confidence: 97%

“…The mainshock was preceded by a sequence of small events that started a few months earlier. The largest foreshock occurred on 30 March 2009 with M w 4 (e.g., Scognamiglio et al, 2010). Several aftershocks followed the main event; among them, the M w 5.6 on 7 April 2009 and the M w 5.4 on 9 April 2009 events are the largest.…”

Section: The 2009 L'aquila Earthquakementioning

confidence: 98%

“…Imaging of the source (Anzidei et al, 2009;Atzori et al, 2009;Cirella et al, , 2012Pino and Di Luccio, 2009;Cheloni et al, 2010;Scognamiglio et al, 2010) highlights a complex rupture history composed of two main slip releases and controlled by spatial variations of material properties along the fault Lucente et al, 2010;Di Stefano, Chiarabba, et al, 2011) as well as temporal variations (Lucente et al, 2010;Zaccarelli et al, 2011). The source characteristics are partly responsible for the southeast directivity (Pino and Di Luccio, 2009;Akinci et al, 2010) and the unusually high levels of strong acceleration recorded close to L'Aquila city Çelebi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spectral-Element Simulations of Seismic Waves Generated by the 2009 L'Aquila Earthquake

Magnoni¹,

Casarotti²,

Michelini³

et al. 2013

Bulletin of the Seismological Society of America

Self Cite

View full text Add to dashboard Cite

We adopt a spectral-element method (SEM) to perform numerical simulations of the complex wavefield generated by the 6 April 2009 M w 6.3 L'Aquila earthquake in central Italy. The mainshock is represented by a finite-fault solution obtained by inverting strong-motion and Global Positioning System data, testing both 1D and 3D wavespeed models for central Italy. Surface topography, attenuation, and the Moho discontinuity are also accommodated. Including these complexities is essential to accurately simulate seismic-wave propagation. Three-component synthetic waveforms are compared to corresponding velocimeter and strong-motion recordings. The results show a favorable match between data and synthetics up to ∼0:5 Hz in a 200 km × 200 km × 60 km model volume, capturing features mainly related to topography or low-wavespeed basins. We construct synthetic peak ground velocity maps that, for the 3D model, are in good agreement with observations, thus providing valuable information for seismic-hazard assessment. Exploiting the SEM in combination with an adjoint method, we calculate finite-frequency kernels for specific seismic arrivals. These kernels capture the volumetric sensitivity associated with the selected waveform and highlight prominent effects of topography on seismic-wave propagation in central Italy.

show abstract

“…Major events, with local Intensity ranging from VIII to X, occurred during the 1703 seismic sequence with mainshocks in Norcia (January 14), Montereale (January 16) and L'Aquila (February 2) (Chiarabba, Jovane, & DiStefano, 2005;Rovida, Camassi, Gasperini, & Stucchi, 2011). Recently, the area experienced strong shaking during the Mw 6.1 2009 L'Aquila earthquake (Herrmann, Malagnini, & Munafò, 2011;ISIDe working group, 2016;Scognamiglio et al, 2010), located about 20 km to the SE.…”

Section: Introductionmentioning

confidence: 99%

Traces of the active Capitignano and San Giovanni faults (Abruzzi Apennines, Italy)

et al. 2016

View full text Add to dashboard Cite

We present a 1:20,000 scale map of the traces of the active Capitignano and San Giovanni faults in the area of the Montereale basin (central Apennines, Italy) covering an area of about 80 km 2 . Detailed fault mapping is based on high-resolution topography from airborne LiDAR imagery validated by extensive ground truthing and geophysical prospecting. Our analysis allowed the recognition of several features related to fault activity, even in scarcely accessible areas characterized by dense vegetation cover and rugged terrain. The identified fault traces run at the base of the NW-SE striking Montereale basin-bounding mountain front and along the base of the southwestern slope of the Monte Mozzano ridge, and have a length of about 12 and 8 km, respectively. Improving the knowledge of fault geometry is a critical issue not only for the recognition of seismogenic sources but also for surface fault hazard assessment and for local urban planning. The knowledge of the exact location of the fault traces is also crucial for the seismogenic characterization of the active faults by means of paleoseismological trenching.ARTICLE HISTORY

show abstract

Fast Determination of Moment Tensors and Rupture History: What Has Been Learned from the 6 April 2009 L'Aquila Earthquake Sequence

Cited by 87 publications

References 21 publications

New insights into the onset and evolution of the central Apennine extensional intermontane basins based on the tectonically active L’Aquila Basin (central Italy)

New insights into the onset and evolution of the central Apennine extensional intermontane basins based on the tectonically active L’Aquila Basin (central Italy)

Spectral-Element Simulations of Seismic Waves Generated by the 2009 L'Aquila Earthquake

Traces of the active Capitignano and San Giovanni faults (Abruzzi Apennines, Italy)

Contact Info

Product

Resources

About