Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7580
AuthorsSaccorotti, G.* 
Piccinini, D.* 
Cauchie, L.* 
Fiori, I.* 
TitleSeismic Noise by Wind Farms: A Case Study from the Virgo Gravitational Wave Observatory, Italy
Issue DateApr-2011
Series/Report no.2/101(2011)
DOI10.1785/​0120100203
URIhttp://hdl.handle.net/2122/7580
KeywordsSeismic Noise
Array Seismology
Gravity Waves
Subject Classification04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring 
AbstractWe present analyses of the noise wave field in the vicinity of Virgo, the Italian–French gravitational wave observatory located close to Pisa, Italy, with special reference to the vibrations induced by a nearby wind farm. The spectral contribution of the wind turbines is investigated using (1) onsite measurements, (2) correlation of spectral amplitudes with wind speed, (3) directional properties determined via multichannel measurements, and (4) attenuation of signal amplitude with distance. Among the different spectral peaks thus discriminated, the one at frequency 1.7 Hz is associated with the greatest power, and under particular conditions it can be observed at distances as large as 11 km from the wind farm. The spatial decay of amplitudes exhibits a complicated pattern, which we interpret in terms of the combination of direct surface waves and body waves refracted at a deep (≈800 m) interface between the Plio-Pleistocenic marine, fluvial, and lacustrine sediments and the Miocene carbonate basement. We develop a model for wave attenuation that allows determining the amplitude of the radiation from individual turbines, which is estimated on the order of 300–400 μms_1/ √Hz for wind speeds over the 8–14 m=s range. On the basis of this model, we then develop a predictive relationship for assessing the possible impact of future wind farm projects.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
BSSA_Saccorotti_etal_2011.pdf2.08 MBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

51
checked on May 28, 2017

Download(s)

20
checked on May 28, 2017

Google ScholarTM

Check

Altmetric