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[en] The results of ambient vibration surveys of the Cochlid Columns in Rome are shown. The objective of this analysis was the characterization of the dynamic behaviour of the monuments and the comparison with the results obtained with previous similar studies, carried out in the 80th using different instruments and different data analysis methods. The new surveys were performed using two different and independent sets on instruments contemporarily. Data were analysed both in the time and frequency domains. For both the columns the analysis showed the presence of two translational frequencies, quite close one to the other while the previous measurements had pointed out just one resonance, and also higher translational frequencies. A rotational frequency, was also observed. Data analysis pointed out interesting information about dynamic behaviour of the columns.
Source
Baggio, C. (Roma Tre University, Rome (Italy)); Clemente, P. (ENEA, Rome (Italy)); Nakamura, Y. (System and Data Research, Tokyo (Japan)); Orlando, L. (Dipt. of Applied Geophysics and environmental Geophysics, Rome Univ. 'La Sapienza', Rome (Italy)); Rovelli, A. (Dept. of Seismiology INGV, Rome' (Italy)) (eds.); Istituto Nazionale di Fisica Nucleare, Padova (Italy); Dipartimento di Fisica 'Galileo Galilei' Universita' degli studi di Padova, Padoa (Italy); Istituto Veneto di Scienze, Lettere ed arti, Venezia (Italy); 311 p; ISBN 978-88-940114-1-8; 
; 2015; p. 281-294; DISS_13: 3. International Workshop on Dynamic Interaction of Soil and Structure; Rome (Italy); 12-13 Dec 2013
; 2015; p. 281-294; DISS_13: 3. International Workshop on Dynamic Interaction of Soil and Structure; Rome (Italy); 12-13 Dec 2013