GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione A matrice 27 epicenter location and fault plane solution of the 01:36 and 02:33 events proposed by INGV and based on a time domain inversion of the seismic data. The challenge for the next months is the monitoring of the coordinates of the sites nearest to the epicenter, to detect or put upper constraints to the postseismic relaxation. References Bruyninx C, Altamimi Z, Caporali A, Kenyeres A, Lidberg M, Stangl G, Torres JA (2013) Guidelines for EUREF Densifications. ftp://epncb.oma.be/epncb/general/Guidelines_for_EUREF_Densifications.pdf. Accessed 22 July 2016 Caporali, A., Braitenberg, C., Montone, P., Rossi, G., Valensise, G., Vigano, A., Zurutuza, J. (2016), A quantitative approach to the loading rate of seismogenic sources in Italy. Proc. GNGTS 2016 (this volume) Dach R, Lutz S, Walser P, Fridez P (Eds) (2015) Bernese GNSS Software Version 5.2. User manual, Astronomical Institute, University of Bern, Bern Open Publishing. doi: http://dx.doi.org/10.7892/boris.72297. ISBN: 978-3- 906813-05-9. Dziewonski, A. M., T.-A. Chou, Woodhouse, J.H. (1981), Determination of earthquake source parameters from waveform data for studies of global and regional seismicity, J. Geophys. Res., 86, 2825-2852. doi:10.1029/ JB086iB04p02825 Ekström, G., M. Nettles, Dziewonski, A. M. (2012) The global CMT project 2004-2010: Centroid-moment tensors for 13,017 earthquakes, Phys. Earth Planet. Inter., 200-201, 1-9 doi:10.1016/j.pepi.2012.04.002 Montone, P. and M.T. Mariucci (2016). The new release of the Italian contemporary stress map, Geophys. J. Int. (2016) 205, 1525–1531, doi: 10.1093/gji/ggw100. Toda, S., R. S. Stein, K. Richards-Dinger, S. Bozkurt, (2005), Forecasting the evolution of seismicity in southern California: Animations built on earthquake stress transfer . J. Geophys. Res. 110 , B05S16, doi:10.1029/ 2004JB003415 Recordingsof the Amatrice seismic sequence toassess the response of Cultural Heritage: the case of the San Giovanni Battista Church, Acquasanta Terme, Italy A. Caserta 1 , F. Doumaz 1 , A. Costanzo 2 , A. Gervasi 2 , W. Thorossian 1 , S. Falcone 2 , C. La Piana 2 , M. Minasi 2 , M.F. Buongiorno 1 1 Centro Nazionale Terremoti, Istituto Nazionale di Geofisica e Vulcanologia (INGV), Roma, Italy 2 Centro Nazionale Terremoti, Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rende (CS), Italy During the moderate magnitude aftershocks following the Amatrice earthquake (Mw 6.0) occurred on 24 August 2016, we installed eight portable seismic stations in the Acquasanta Terme town, located at about 20 km NE of the mainshock zone epicenter. The aim is to study the interaction between the incoming seismic wave-field and the San Giovanni Battista Church (AD 1039), the main relevant cultural heritage in the town. Such seismic sequence, indeed, offers an unprecedented singular opportunity to calibrate the monument response to central Apennines earthquakes, which have been responsible for the largest damage to the cultural heritage disseminated in the whole central Italy. In a first step, we installed an array of five seismic stations in the town (red triangles on the geological map in Fig. 1). Then, to study the dynamic behavior of the monumental structure under the action of the incoming wave-field, we installed three seismic stations inside the church (green triangles on the geological map in Fig 1). The location of these stations has been chosen in order to study mainly the interaction between the bell tower and the rest of the church structure. In the same time, in order to estimate the state of the health of the monument, we coupled a terrestrial laser scanner (TLS) campaign with some in-door and out-door drone photogrammetric flights. Thermographic survey of the walls has been done to reveal earthquake induced structural