Reconnaissance of 2016 Central Italy Earthquake Sequence (original) (raw)

The Central Italy earthquake sequence nominally began on 24 August 2016 with a M6.1 event on a normal fault that produced devastating effects in the town of Amatrice and several nearby villages and hamlets. A major international response was undertaken to record the effects of this disaster, including surface faulting, ground motions, landslides, and damage patterns to structures. This work targeted the development of high-value case histories useful to future research. Subsequent events in October 2016 exacerbated the damage in previously affected areas and caused damage to new areas in the north, particularly the relatively large town of Norcia. Additional reconnaissance after a M6.5 event on 30 October 2016 documented and mapped several large landslide features and increased damage states for structures in villages and hamlets throughout the region. This paper provides an overview of the reconnaissance activities undertaken to document and map these and other effects, and highlights valuable lessons learned regarding faulting and ground motions, engineering effects, and emergency response to this disaster.

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Engineering reconnaissance following the August 24, 2016 M6.0 Central Italy earthquake

2017

An earthquake with a moment magnitude reported as 6 .0 from INGV (Istituto Nazionale di Geofisica e Vul canologia); occurred at 03:36 AM (local time) on 24 August 2016 in the central part of Italy. The epicenter was lo cated at the borders of the Lazio, Abruzzi, Marche and Umbria regions, abou t 2.5 km north-east of the village of Accumoli and about 100 km from Rome. The hypocentral depth was about 8 km (INGV). We summarize preliminary findings of the Italy-US G EER (Geotechnical Extreme Events Reconnaissance) team, on damage distribution, causative faults, earthquak e-induced landslides and rockfalls, building and bridge performance, and ground motion characterization. Our reconnaissance team used multidisciplinary approaches, combining expertise in geo logy, seismology, geomatics, geotechnical engineeri g, and structural engineering. Our approach was to combine traditiona l reconnaissance activities of on-ground recording a d mapping of field conditions, with advanced imaging and ...

Reconnaissance of geotechnical aspects of the 2016 Central Italy earthquakes

Bulletin of Earthquake Engineering, 2018

Between August and November 2016, three major earthquake events occurred in Central Italy. The first event, with M6.1, took place on 24 August 2016, the second (M5.9) on 26 October, and the third (M6.5) on 30 October 2016. Each event was followed by numerous aftershocks. The 24 August event caused massive damages especially to the villages of Arquata del Tronto, Accumoli, Amatrice, and Pescara del Tronto. In total, there were 299 fatalities, generally from collapses of unreinforced masonry dwellings. The October events caused significant new damage in the villages of Visso, Ussita, and Norcia, although not producing fatalities, since the area had largely been evacuated. The Italy-US Geotechnical Extreme Events Reconnaissance team investigated earthquake effects on slopes, villages, and major infrastructures. The approach adopted to carry out post-earthquake reconnaissance surveys was to combine traditional reconnaissance activities of onground evidences and mapping of field conditions with advanced imaging and damage detection routines enabled by state-of-the-art geomatics technology. Presented herein are & G. Vessia

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