Influence of Wind Turbines on Seismic Records of the Gräfenberg Array

Abstract

Research Article| July 13, 2016 Influence of Wind Turbines on Seismic Records of the Gräfenberg Array Klaus Stammler; Klaus Stammler aFederal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, 30655 Hannover, [e-mail]@bgr.de Search for other works by this author on: GSW Google Scholar Lars Ceranna Lars Ceranna aFederal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, 30655 Hannover, [e-mail]@bgr.de Search for other works by this author on: GSW Google Scholar Seismological Research Letters (2016) 87 (5): 1075–1081. https://doi.org/10.1785/0220160049 Article history first online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Klaus Stammler, Lars Ceranna; Influence of Wind Turbines on Seismic Records of the Gräfenberg Array. Seismological Research Letters 2016;; 87 (5): 1075–1081. doi: https://doi.org/10.1785/0220160049 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT Continuous seismic signals of wind turbines (WTs) have been analyzed at 13 sites of the Gräfenberg (GRF) array in Germany. The stations of the GRF array have operated continuously for 40 years and comprise the longest available digital broadband array data set. By comparing time spans before and after installation of WTs in the vicinity of the stations, their influence on background noise can be quantified. Here, a strong dependence is shown between local wind speed and the observed effects on noise spectra. Station sites with WTs within distances up to 5 km are exposed to significant disturbance in the background noise; even at distances of 15 km such signals are still visible. The geological setting at GRF with sedimentary layer below all stations seems to favor propagation of these signals. Moreover, we observe different decay patterns for signals below and above 2 Hz, which could be related to the geometry of this layer. Overall, our observations clearly document deteriorating effects of WTs to highly sensitive seismological stations. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.