On 29 May 2012, at 07:00:03 (UTC), Northern Italy was struck by an earthquake of magnitude Ml5.8 (lat 44.851 long 11.086), located nearly 12 km WSW-ward of the 20 May Ml5.9 event. The 29 May event was followed by three relevant aftershocks with Ml≥5.0: two events with Ml 5.3 and Ml 5.2 occurred on 29 May 2012 at 10:55:57 (UTC) and at 11:00:25 (UTC), respectively, and another one on 3 May 2012 at 19:20:43 (UTC). Ten events with magnitude 4.0 ≤ Ml ≤ 5.0, plus several other minor earthquakes, were released few kilometers westward of the epicentral area of the 20 May event. The aftershocks distribution of the 29 May event covers an area extending in the E-W direction for a length of nearly 20 km, between the localities of Novi di Modena and San Felice sul Panaro, close to the buried front of the northward-verging active Ferrara thrust. Twenty stations of the Italian strong motion network (RAN), inclusive of temporary stations (see Mirandola Earthquake Working Group - Report 1), owned and managed by the National Civil Protection Department (DPC), triggered within 50 km from the 29 May event epicentral area (Figs. 1A, 1B, 1D). Taking into account the spatial and temporal evolution of the local seismicity, DPC continued to install temporary stations deploying other 3 strong motion instruments. This second report is aimed at: 1- providing the waveforms of the 29 May 2012 event to engineers, geophysicists geologists and scientists in general, for professional, technical works and scientific purposes; 2- showing the final configuration of the temporary accelerometric network, consisting of 17 stations installed within the epicentral area. Such temporary network represents an extension of the permanent Italian strong motion one and is aimed at supporting the emergency response by the civil protection authorities by improving the network coverage. Two of the new stations (Cento and Carpi) must be considered as permanent.
THE FERRARA ARC THRUST EARTHQUAKES OF MAY-JUNE 2012 (NORTHERN ITALY): STRONG-MOTION AND GEOLOGICAL OBSERVATIONS -Report II
COSTA, GIOVANNI;GALLO, ANTONELLA;TIBERI, LARA;ZOPPÈ, GIULIANA;SUHADOLC, PETER;
2012-01-01
Abstract
On 29 May 2012, at 07:00:03 (UTC), Northern Italy was struck by an earthquake of magnitude Ml5.8 (lat 44.851 long 11.086), located nearly 12 km WSW-ward of the 20 May Ml5.9 event. The 29 May event was followed by three relevant aftershocks with Ml≥5.0: two events with Ml 5.3 and Ml 5.2 occurred on 29 May 2012 at 10:55:57 (UTC) and at 11:00:25 (UTC), respectively, and another one on 3 May 2012 at 19:20:43 (UTC). Ten events with magnitude 4.0 ≤ Ml ≤ 5.0, plus several other minor earthquakes, were released few kilometers westward of the epicentral area of the 20 May event. The aftershocks distribution of the 29 May event covers an area extending in the E-W direction for a length of nearly 20 km, between the localities of Novi di Modena and San Felice sul Panaro, close to the buried front of the northward-verging active Ferrara thrust. Twenty stations of the Italian strong motion network (RAN), inclusive of temporary stations (see Mirandola Earthquake Working Group - Report 1), owned and managed by the National Civil Protection Department (DPC), triggered within 50 km from the 29 May event epicentral area (Figs. 1A, 1B, 1D). Taking into account the spatial and temporal evolution of the local seismicity, DPC continued to install temporary stations deploying other 3 strong motion instruments. This second report is aimed at: 1- providing the waveforms of the 29 May 2012 event to engineers, geophysicists geologists and scientists in general, for professional, technical works and scientific purposes; 2- showing the final configuration of the temporary accelerometric network, consisting of 17 stations installed within the epicentral area. Such temporary network represents an extension of the permanent Italian strong motion one and is aimed at supporting the emergency response by the civil protection authorities by improving the network coverage. Two of the new stations (Cento and Carpi) must be considered as permanent.Pubblicazioni consigliate
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