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http://hdl.handle.net/2122/10697
Authors: | Montuori, Caterina* Murru, Maura* Falcone, Giuseppe* |
Title: | Spatial variation of the value observed for the periods preceding and following the 24 August 2016, Amatrice earthquake ML 6.0) (Central Italy) | Journal: | Annals of Geophysics | Series/Report no.: | FAST TRACK 5/59 (2016) | Issue Date: | 2016 | DOI: | 10.4401/ag-7273 | URL: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/7273/6621 | Keywords: | Amatrice earthquake b-value Gutenberg Richter law |
Subject Classification: | 04.06. Seismology 04.07. Tectonophysics 05.08. Risk |
Abstract: | This paper deals with a preliminary spatial and temporal analysis of the b-value variability, observed in the area where the August 2016 Amatrice earthquake (ML6.0) occurred. With comparison of the pre- and post periods of the mainshock, an investigation of anomalous zone of b-values was performed aiming to find possible links with barriers and/or asperities in the crustal volume where seismic sequence was developed. Preliminary results show an area with high b-value (b=1.6) where the mainshock originated. Conversely, two low b-value (b=0.8) volumes are located at the border of the seismogenic structure. The location of these two areas is consistent with a preliminary fault slip inversion, suggesting the presence of two highly stressed patches of co-seismic deformation located NW and SE of the mainshock, with a high potentiality to rupture causing a possible moderate or larger event: the first one in the North (Norcia), the second one in South, next to the area of Amatrice and Campotosto. |
Appears in Collections: | Article published / in press |
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Montuori_et_al_2016.pdf | 1.48 MB | Adobe PDF | View/Open |
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