London Greenwich foot tunnel acoustics characterisation

摘要

The Greenwich foot tunnel in London runs 15m below the Thames riverbed, connecting the Cutty Sark Gardens in the Royal Borough of Greenwich on the south bank with the Island Gardens in the Borough of Tower Hamlets on the north bank. The tunnel was inaugurated in 1902 and, since then, has served pedestrians as an all-weather and reliable means to get from one side of the Thames to the other. The tunnel is 370m long and the footpath has an internal width of 3.2m and height of 2.65m. The floor is made of stone paving and the internal walls are covered with glazed tiles. The subterranean link is used by 1.2million people a year and the listed building1 has become an interesting London landmark because of its unusual and interesting acoustic characteristics. In December 2020 (and for the first time ever) a comprehensive survey to characterise the acoustics of the tunnel was undertaken. It was conducted by LSBU senior lecturer and researcher, Dr Luis Gomez-Agustina, and former LSBU masters course in acoustics student, Pedro Vazquez-Barrera, with the assistance of PhD candidate, Doug Shearer.