TY - GEN
T1 - Seismic microzonation by means of cluster analysis
AU - Martorana, Raffaele
AU - Capizzi, Patrizia
AU - Catania, Maria
AU - D'Alessandro, Antonino
AU - Capizzi, null
AU - Scudero, Salvatore
AU - D’Alessandro, null
AU - D’Alessandro, null
AU - D’Alessandro, null
AU - Carollo, Alessandra
PY - 2019
Y1 - 2019
N2 - The identification of areas with uniform behaviour in seismic perspective is a very complex task that involves the simultaneous assessment of many parameters. In this paper we propose an automatic procedure for the seismic microzonation based on cluster analysis and performed by means of an agglomerative hierarchical algorithm. It exploits a proximity matrix specifically defined on the parameters space and the average linkage criteria. The procedure has been used to carry out the expedite seismic microzonation of some high seismic hazard areas, only using the data inferred by the extensive application of the HVSR technique. The results of the clustering procedures have been assessed from a quantitative point of view, by means of the variance decomposition. This procedure could be also used to identify homogeneous areas in a different parameters space or in a multi-dimensional space, to obtain a robust and exhaustive seismic microzonation, based on a quantitative method.
AB - The identification of areas with uniform behaviour in seismic perspective is a very complex task that involves the simultaneous assessment of many parameters. In this paper we propose an automatic procedure for the seismic microzonation based on cluster analysis and performed by means of an agglomerative hierarchical algorithm. It exploits a proximity matrix specifically defined on the parameters space and the average linkage criteria. The procedure has been used to carry out the expedite seismic microzonation of some high seismic hazard areas, only using the data inferred by the extensive application of the HVSR technique. The results of the clustering procedures have been assessed from a quantitative point of view, by means of the variance decomposition. This procedure could be also used to identify homogeneous areas in a different parameters space or in a multi-dimensional space, to obtain a robust and exhaustive seismic microzonation, based on a quantitative method.
UR - http://hdl.handle.net/10447/367603
M3 - Conference contribution
SN - 978-0-367-14328-2
T3 - PROCEEDINGS IN EARTH AND GEOSCIENCES
SP - 1911
EP - 1918
BT - Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions: proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, (ICEGE 2019), June 17-20, 2019, Rome, Italy
ER -