![Page 1: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/1.jpg)
Results of initial research – Phase 0
Eskdalemuir Working Group 16th Aug 2013
Dr Mark-Paul Buckingham
![Page 2: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/2.jpg)
Introduction
Identification of quietest site at Craig Wind Farm
Representative seismic spectra
Application of Frequency-dependant weighting (FDW) to representative spectra and comparison to 2005 Budget prediction
Factor of over-estimate by 2005 Budget with respect to distance from EKA
Prospect of headroom in the Budget
![Page 3: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/3.jpg)
Sensor selection
Modelled background noise by examining narrow bands between blade-pass frequencies
The quietest sites were: 6351 / AEG-5 6099 / AEG -2b
This correlates with the analysis of Dr Bowers
![Page 4: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/4.jpg)
Representative spectra
Take the spectral interquartile mean of all data with wind speed in the11-12 ms-1 range
Result correlates well with that of Dr Bowers
6099 / AEG-2b
![Page 5: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/5.jpg)
Representative spectra
Take the spectral interquartile mean of all data with wind speed in the11-12 ms-1 range
Result correlates well with that of Dr Bowers
6351 / AEG-5
![Page 6: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/6.jpg)
Over-estimate factor
The frequency dependent weighting function (FDW) to representative spectra
FDW contains a distance term, so the over-estimate is distance dependent
![Page 7: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/7.jpg)
Prospect for head-room – 0.336 nm threshold
Table 1 MoD figures are per September 2012 figures Re-calculation based on 6351/AEG-5
Wind Farm Name Developer or Applicant
Number of
turbines
Installed
capacity per
turbine (MW)
Total Power Genera
ted (MW)
Average
turbine distance (km)
MoD amplitude based on
30th September
2012 figures
Cumulative
amplitude MoD 30th Sept 2012
(nm)
Delta - budget multiplier
Amplitude after delta multiplier
(nm)
Re-calculated umulative
amplitude (nm)
Bowbeat E.ON 24 1.3 31.2 42.304 0.003124 0.0031240.535944 0.001674 0.001674
Carlesgill (Craig) CWF Ltd 5 2.5 12.5 20.05 0.094468 0.094520.158138 0.014939 0.015033
Halkburn (Long Park) Wind Prospect 19 2 38 42.854 0.003931 0.0946020.556269 0.002187 0.015191
Clyde Airtricity 152 3 456 29.993 0.140728 0.169569
0.249903 0.035168 0.038309... ... ... ... ... ... ... ... ... ... ...
Earslhaugh Wind Energy 24 3 72 21.123 0.205013 0.387190.164522 0.033729 0.070854
... ... ... ... ... ... ... ... ... ... ...
North of midtown farm Mr Brown 1 0.05 0.05 47.86 1.05E-05 0.4829520.787117 8.26E-06 0.086674
![Page 8: Results of initial research – Phase 0 Eskdalemuir Working Group 16 th Aug 2013 Dr Mark-Paul Buckingham](https://reader036.vdocument.in/reader036/viewer/2022082820/5697bfa21a28abf838c96092/html5/thumbnails/8.jpg)
Conclusions
Results support finding of Dr Bowers, high correlation in results
The 2005 Budget over-estimates the amplitude of seismic ground vibration produced by wind turbines
The over-estimate is depends on the distance from EKA. It varies between: Over-estimate by a factor of 10 for turbines 10 km from EKA Over-estimate by a factor of 1.2 for turbines 50 km from EKA
If the turbines at Craig Wind Farm are representative of other turbine in the consultation zone then is a likelihood of significant prospective head room that would allow the building of further wind turbine without breaching the 0.336 nm threshold.