Sound-Redirect; evaluation of the influence of noise protection measures and impact sound parameters during the construction of offshore wind turbines with regard to modelling and frequency weighting

Ship as sound source and three harbour porpoise

Project data

Project leader: Prof. Prof. h. c. Dr. Ursula Siebert
Scientists: Dr. Andreas Ruser
Dr. Johannes Baltzer
Project term: January 2022 until December 2022
Sponsorship: The Federal Maritime and Hydrographic Agency (BSH)

Project description

The aim of the research project is to answer scientific questions related to effects of offshore wind farms on harbour porpoises. Therefore, effects that occur during construction as well as cumulative effects from the construction of offshore wind farms will be investigated and an assessment concept will be developed. First, data from harbour porpoise click detectors are evaluated, which provide important information on the occurrence of harbour porpoises. The objective of this research project is to establish the cause-effect relationship between sound exposure and harbour porpoise occurrence as well as to evaluate the effectiveness of measures used to reduce effects on harbour porpoises (noise mitigation and deterrence).
The work in this project aims to answer the following question:
1)Are the applied noise mitigation measures during the construction of offshore wind farms sufficient to ensure the protection of the harbour porpoise?
An evaluation that takes into account all constructed wind farms has not been carried out yet, but is imperative in order to evaluate the success of the application and further developments of noise mitigation measures. The evaluation of the current noise mitigation concept and the state of the art using data and findings from previous projects make an important contribution to the planning of the upcoming further expansion of offshore wind energy.

Contact person

Stiftung Tierärztliche Hochschule Hannover
Institute for Terrestrial and Aquatic Wildlife Research
Werftstr. 6
25761 Büsum

Dr. Johannes Baltzer

Phone: +49 (0)511-8568166
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