Preprints
https://doi.org/10.5194/egusphere-2023-45
https://doi.org/10.5194/egusphere-2023-45
07 Feb 2023
 | 07 Feb 2023
Status: this preprint is open for discussion.

The impact of seismic noise produced by wind turbines on seismic borehole measurements

Fabian Limberger, Georg Rümpker, Michael Lindenfeld, and Hagen Deckert

Abstract. Seismic signals produced by wind turbines can have an adverse effect on seismological measurements up to distances of several kilometres. Based on numerical simulations of the emitted seismic wavefield, we study the effectivity of seismic borehole installations as a way to reduce the incoming noise. We analyse the signal amplitude as a function of sensor depth and investigate effects of seismic velocities, damping parameters and geological layerings in the subsurface. Our numerical approach is validated by real data from borehole installations affected by wind turbines. We demonstrate that a seismic borehole installation with an adequate depth can effectively reduce the impact of seismic noise from wind turbines in comparison to surface installations. Therefore, placing the seismometer at greater depth represents a potentially effective measure to improve or retain the quality of the recordings at a seismic station. However, the advantages of the borehole decrease significantly with increasing signal wavelength.

Fabian Limberger et al.

Status: open (until 24 Mar 2023)

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  • RC1: 'Comment on egusphere-2023-45', Sven Schippkus, 27 Feb 2023 reply

Fabian Limberger et al.

Fabian Limberger et al.

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Short summary
Wind turbines that are located close to a seismometer produce ground tremors that can increase the noise level at the seismic station. Using numerical models, we analyse the effectivity of borehole installations to reduce this impact. We study effects of geophysical parameters on the borehole effectivity and validate our modelling approach with data from real boreholes. Boreholes are effective to reduce the impact from wind turbines, however, this depends on the wavelength of the seismic wave.