Research Article
Monopile Foundation Stiffness Estimation of an Instrumented Offshore Wind Turbine through Model Updating
Table 1
Normalised frequency bands used for selection of tower modes.
| | Normalised frequency band, | Initial empirical estimate | FA, | SS, |
| 1st tower | 0.94–1.04 | 0.99 | 1.00 | 2nd tower | 3.69–4.29 | 4.02 | 4.16 | 3rd tower | 9.22–11.74 | 9.73 | 11.23 |
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