Searched for: author%3A%22von+Benda-Beckmann%2C+A.M.%22
(1 - 20 of 40)

Pages

document
Heinis, F. (author), de Jong, C.A.F. (author), von Benda-Beckmann, A.M. (author)
report 2022
document
von Benda-Beckmann, A.M. (author), Ketten, D.R. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Muller, R.A.J. (author), Kastelein, R.A. (author)
Application of a kurtosis correction to frequency-weighted sound exposure level (SEL) improved predictions of risk of hearing damage in humans and terrestrial mammals for sound exposures with different degrees of impulsiveness. To assess whether kurtosis corrections may lead to improved predictions for marine mammals, corrections were applied to...
article 2022
document
Isojunno, S. (author), von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Kvadsheim. P.H., (author), Frans-Peter A. Lam, (author), Gkikopoulou, K.C. (author), Pöyhönen, V. (author), Tyack, P.L. (author), Benti, B. (author), Foskolos, I. (author), Bort, J. (author), Miguel Neves, M. (author), Biassoni, N. (author), Miller, P.J.O. (author)
Auditory masking by anthropogenic noise may impact marine mammals relying on sound for important life functions, including echolocation. Animals have evolved antimasking strategies, but they may not be completely effective or cost-free. We formulated seven a priori hypotheses on how odontocete echolocation behavior could indicate masking. We...
article 2021
document
Heinis, F. (author), de Jong, C.A.F (author), von Benda-Beckmann, A.M. (author)
Abstract 2 Foreword 1 Introduction 1.1 Background 1.2 Objective 1.3 Scope 1.4 Approach 1.5 Report structure 2 The determination of the cumulative effects of the development of offshore wind on marine mammals ..... 14 2.1 Overview of the steps in the staged procedure ....... 14 2.2 Calculation of sound propagation ............ 15 2.3 Dose...
report 2021
document
Kastelein, R.A. (author), Helder-Hoek, L. (author), Cornelisse, S.A. (author), von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Ketten, D.R. (author)
Noise-induced temporary hearing threshold shift (TTS) was studied in a harbor porpoise exposed to impulsive sounds of scaled-down airguns while both stationary and free-swimming for up to 90 min. In a previous study, ∼4 dB TTS was elicited in this porpoise, but despite 8 dB higher single-shot and cumulative exposure levels (up to 199 dB re 1...
article 2020
document
Isojunno, S. (author), Wensveen, P.J. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), von Benda-Beckmann, A.M. (author), Lopez, L.M. Martín (author), Kleivane, L. (author), Siegal, E.M. (author), Miller, P.J.O. (author)
Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards nearcontinuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than traditional pulsed active sonar (PAS), but potentially with greater cumulative sound energy. We conducted at-sea experiments to...
article 2020
document
Müller, R.A.J. (author), von Benda-Beckmann, A.M. (author), Halvorsen, M.B. (author), Ainslie, M.A. (author)
Regulations for underwater anthropogenic noise are typically formulated in terms of peak sound pressure, root-mean-square sound pressure, and (weighted or unweighted) sound exposure. Sound effect studies on humans and other terrestrial mammals suggest that in addition to these metrics, the impulsiveness of sound (often quantified by its kurtosis...
article 2020
document
von Benda-Beckmann, A.M. (author), Ketten, D.R. (author), de Jong, C.A.F. (author), Lam, F.P.A. (author), Kastelein, R.A. (author)
This report describes the results of two separate IOGP JIP-funded projects (I) and (II), both aimed at studying Temporary Threshold Shift (TTS) in harbor porpoises (Phocoena phocoena) exposed to repeated airgun exposures. The objective of this study was to obtain data to develop a scientifically valid method to predict TTS growth, recovery, and...
report 2020
document
Kok, A.C.M. (author), van Kolfshoten, L. (author), Campbell, J.A. (author), von Benda-Beckmann, A.M. (author), Miller, P.J.O. (author), Slabbekoorn, H. (author), Visser, F. (author)
article 2020
document
von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Prior, M. (author), Ainslie, M.A. (author), Hansen, R.R. (author), Isojunno, S. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), Miller, P.J.O. (author)
To understand the consequences of underwater noise exposure for cetaceans, there is a need for assessments of behavioural responses over increased spatial and temporal scales. Bottom-moored acoustic recorders and satellite tags provide such long-term and large spatial coverage of behaviour compared to short-duration acoustic-recording tags....
article 2019
document
Wensveen, P.J. (author), Isojunno, S. (author), Hansen, R.R. (author), von Benda-Beckmann, A.M. (author), Kleivane, L. (author), van IJsselmuide, S. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), DeRuiter, S.L. (author), Curé, C. (author), Narazaki, T. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
Impact assessments for sonar operations typically use received sound levels to predict behavioural disturbance in marine mammals. However, there are indications that cetaceans may learn to associate exposures from distant sound sources with lower perceived risk. To investigate the roles of source distance and received level in an area without...
article 2019
document
Kastelein, R.A. (author), von Benda-Beckmann, A.M. (author), Lam, F.-P.A. (author), Jansen, E. (author), de Jong, C.A.F. (author)
article 2019
document
von Benda-Beckmann, A.M. (author), Thomas, L. (author), Tyack, P.L. (author), Ainslie, M.A. (author)
Passive acoustic monitoring with widely-dispersed hydrophones has been suggested as a cost-effective method to monitor population densities of echolocating marine mammals. This requires an estimate of the area around each receiver over which vocalizations are detected - the "effective detection area" (EDA). In the absence of auxiliary...
article 2018
document
Wensveen, P.J. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), von Benda-Beckmann, A.M. (author), Sivle, L.D. (author), Visser, F. (author), Cure, C. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
Exposure to underwater sound can cause permanent hearing loss and other physiological effects in marine animals. To reduce this risk, naval sonars are sometimes gradually increased in intensity at the start of transmission ('ramp-up'). Here, we conducted experiments in which tagged humpback whales were approached with a ship to test whether a...
article 2017
document
Kastelein, R.A. (author), Helder-Hoek, L. (author), van de Voorde, S. (author), von Von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), Jansen, E. (author), de Jong, C.A.F. (author), Ainslie, M.A. (author)
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...
article 2017
document
von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P.J.O. (author), Tyack, P.L. (author), Ainslie, M.A. (author)
Ramp-up procedures are used to mitigate the impact of sound on marine mammals. Sound exposure models combined with observations of marine mammals responding to sound can be used to assess the effectiveness of ramp-up procedures. We found that ramp-up procedures before full-level sonar operations can reduce the risk of hearing threshold shifts...
bookPart 2016
document
von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Samarra, F.I.P. (author), Beerens, S.P. (author), Miller, P.J.O. (author)
Sound-recording acoustic tags attached to marine animals are commonly used in behavioural studies. Measuring ambient noise is of interest to efforts to understand responses of marine mammals to anthropogenic underwater sound, or to assess their communication space. Noise of water flowing around the tag reflects the speed of the animal, but...
article 2016
document
Sertlek, H.O. (author), Aarts, G. (author), Brasseur, S. (author), Slabbekoorn, H. (author), ten Cate, C. (author), von Benda-Beckmann, A.M. (author), Ainslie, M.A. (author)
The European Union requires member states to achieve or maintain good environmental status for their marine territorial waters and explicitly mentions potentially adverse effects of underwater sound. In this study, we focused on producing maps of underwater sound from various natural and anthropogenic origins in the Dutch North Sea. The source...
bookPart 2016
document
Aarts, G. (author), von Benda-Beckmann, A.M. (author), Lucke, K. (author), Özkan Sertlek, H. (author), van Bemmelen, R. (author), Geelhoed, S.C.V. (author), Brasseur, S. (author), Scheidat, M. (author), Lam, F.P.A. (author), Slabbekoorn, H. (author), Kirkwood, R. (author)
Anthropogenic sound in the marine environment can have negative consequences for marine fauna. Since most sound sources are intermittent or continuous, estimating how many individuals are exposed over time remains challenging, as this depends on the animals’ mobility. Here we explored how animal movement influences how many, and how often,...
article 2016
document
Wittekind, D. (author), Tougaard, J. (author), Stilz, P. (author), Dähne, M. (author), Clark, C.W. (author), Lucke, K. (author), von Benda-Beckmann, A.M. (author), Ainslie, M.A. (author), Siebert, U. (author)
We estimated the long-range effects of air gun array noise on marine mammal communication ranges in the Southern Ocean. Air gun impulses are subject to significant distortion during propagation, potentially resulting in a quasi- continuous sound. Propagation modeling to estimate the received waveform was conducted. A leaky integrator was used as...
bookPart 2016
Searched for: author%3A%22von+Benda-Beckmann%2C+A.M.%22
(1 - 20 of 40)

Pages