Erwin Jansen

Erwin Jansen
TNO | tno

About

12
Publications
2,137
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118
Citations

Publications

Publications (12)
Technical Report
Full-text available
This report is the result of Phase 2 of a two-phase project for the standardization of measurement, processing and reporting procedures for offshore oil and gas exploration and production-related sound sources. This project was carried out for the Sound and Marine Life Joint Industry Programme of the International Association of Oil & Gas Producers...
Conference Paper
Offshore wind is a quickly-emerging market resulting from the worldwide transition towards renewable energies. Whilst this transition has countless environmental benefits, the negative aspects pertaining to underwater noise generated during wind park construction are coming under increased public scrutiny. A number of countries have responded to th...
Article
Full-text available
In seismic surveys, reflected sounds from airguns are used under water to detect gas and oil below the sea floor. The airguns produce broadband high-amplitude impulsive sounds, which may cause temporary or permanent threshold shifts (TTS or PTS) in cetaceans. The magnitude of the threshold shifts and the hearing frequencies at which they occur depe...
Article
Various models for the underwater noise radiation due to marine pile driving are being developed worldwide, to predict the sound exposure of marine life during pile driving activities. However, experimental validation of these models is scarce, especially for larger distances. Recently, TNO has been provided with data from underwaternoise measureme...
Article
The contribution of shipping noise to the background noise in the seas can be estimated by shipping noise maps. Noise maps can be made by applying appropriate modeling tools for underwater sound propagation and ship source levels to information on the acoustic environment and on the ship traffic in the area of the map. The development of reliable s...
Article
The acoustic radiation from a pile being driven into the sediment by a sequence of hammer strikes is studied with a linear, axisymmetric, structural acoustic frequency domain finite element model. Each hammer strike results in an impulsive sound that is emitted from the pile and then propagated in the shallow water waveguide. Measurements from acce...
Article
The quantitative prediction of noise radiated into the underwater environment during offshore impact pile driving is a topic of major interest to the underwater acoustics community. This problem is addressed by using a hybrid model consisting of a high fidelity local model describing the vibrating pile and its vicinity, and an efficient model for t...
Article
Increasing concern exists for possible effects of low frequency anthropogenic sound in the sea with particular emphasis on shipping, seismic surveys, off‐shore construction, and underwater explosives. The need to make like with like comparisons between different sounds, sounds measured in different places, or sounds measured by different monitoring...
Article
Offshore percussive pile driving generates loud impulsive sounds in the marine environment, sometimes characterized in terms of their “source level,” a measure of acoustic pressure in the far field of its source. Special difficulties with the definition of source level for this application are described. Environmental assessment of future building...
Article
Full-text available
In the Netherlands, the noise emission of shunting yards, which are often located in urban areas, are a source of disturbance. The noise emission of shunting yards is legislated in terms of maximum allowable equivalent sound pressure levels and peak noise levels of the facade of residences. Brake noise is known to be a major contributor to the tota...
Article
The high noise emission levels of freight wagons during rolling are mainly due to uneven wheel treads produced during the braking sequences when the vehicle is equipped with cast iron blocks. This has lead to the development of two types of composite brake shoes (K- and LL-blocks), which are far less aggressive to the wheel.It has been demonstrated...

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