Publication Date:
2020-11-12
Description:
On August 21, 2017, at 18:57 UTC, an earthquake of MD 4.0 occurred in Casamicciola, district of Ischia island. The damage caused by the earthquake was massive, with two victims and several buildings collapsed, and circumscribed to the areas of uptown Casamicciola, particularly in the Piazza Maio-La Rita area, and in a small area, called Fango, in Lacco Ameno. Medium and minor damages occurred in Piazza Bagni, in the area around
the town hall of Casamicciola and in the Sentinella area. Even assuming the poor quality constructions and/or not in compliance with the anti-seismic regulations, such a level of damage has induced the scientific community to analyse the effects of local site amplifications, that usually are not negligible in volcanic areas. As a matter of fact the seismic station IOCA, located very close to the high damage areas, recorded a peak ground acceleration (PGA) of 2.6 m/s2. This paper is aimed to study the possible site amplification in the areas heavily affected by the August 21 earthquake in order to better understand the causes of these macroseismic effects and high damage levels already observed in the past.
Description:
Published
Description:
Centro Congressi della Stazione Marittima, Trieste, Italy
Description:
6V. Pericolosità vulcanica e contributi alla stima del rischio
Keywords:
Site effects
;
Polarization analysis
;
Ischia Island
;
Seismic noise
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
Conference paper
Permalink
