Ambient vibrations of the San Frediano bell tower in Lucca

The San Frediano bell tower in Lucca, dating back to the thertheenth century, is located in the historic center of Lucca and is about 50 m high. The vibrations of the tower, subjected to ambient noise, were recorded from October 27th 2015, to September 9th 2017, using four three axial velocimeters installed at different positions along the tower's height. Data have been acquired continuously with a frequency of 100 sps.