Wind turbine infrasound propagation over long distance
Crozier, Steven
Infrasound with large peak to trough blade pass harmonics in two houses between three large wind turbine farms (WTFs) on the northwest coast of Norway, two single health cases, and a health survey near the WTF in Tysvær, Norway.
In late 2019 I was contacted by concerned citizens on the neighbouring island of Hitra, where Norway’s first full scale WTF Hitra 1 with 24 Siemens SWT 2.3 CS turbines with 5.800m² sweep areas had been in commission since 2004. It wasn’t until the Hitra 2 WTF, with 26 Vestas V117 turbines with twice the sweep area, 10.745m², started their production in the autumn of 2019 that health issues arose. Simultaneous 2-channel sound recordings were made in the bedrooms and outside of two houses on Hitra in December 2019 and in February 2021. Both houses are located ten kilometres to the northwest and to the north, northwest of Hitra 1&2 WTFs. Sound measurements and the health issues of the residents are presented. Norway’s second health survey of residents near Tysvær WTF performed in 2023 is touched. Also, public health’s approach to infrasound from WTFs, a coda on infrasound effects in human and animal physiology at a cellular level, and a short discussion on infrasound monitoring and setting limits in homes.
Steven Crozier, MD, Specialist in Family Medicine and retired Municipal Chief, Medical Officer on the island of Frøya, and Member of the Public Health Committee in Motvind Norge, Sistranda, Trøndelag, Norway
11th International Conference on Wind Turbine Noise, Copenhagen, Denmark – 10th to 13th June 2025
Download original document: “Wind turbine infrasound propagation over long distance [1]”
URL to article: https://www.wind-watch.org/documents/wind-turbine-infrasound-propagation-over-long-distance/
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[1] Wind turbine infrasound propagation over long distance: https://docs.wind-watch.org/WTN11-Crozier-infrasound.pdf