Search Results - "Duncan, Alec J"

Song variation of the South Eastern Indian Ocean pygmy blue whale population in the Perth Canyon, Western Australia by Jolliffe, Capri D, McCauley, Robert D, Gavrilov, Alexander N, Jenner, K Curt S, Jenner, Micheline-Nicole M, Duncan, Alec J

“…Sea noise collected over 2003 to 2017 from the Perth Canyon, Western Australia was analysed for variation in the South Eastern Indian Ocean pygmy blue whale…”
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In situ source levels of mulloway (Argyrosomus japonicus) calls by Parsons, Miles J G, McCauley, Robert D, Mackie, Michael C, Siwabessy, Paulus J, Duncan, Alec J

“…Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call…”
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Underwater sound of rigid-hulled inflatable boats by Erbe, Christine, Liong, Syafrin, Koessler, Matthew Walter, Duncan, Alec J., Gourlay, Tim

“…Underwater sound of rigid-hulled inflatable boats was recorded 142 times in total, over 3 sites: 2 in southern British Columbia, Canada, and 1 off Western…”
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Reducing vessel noise: An example of a solar-electric passenger ferry by Parsons, Miles J G, Duncan, Alec J, Parsons, Sylvia K, Erbe, Christine

“…Concern over the impacts of anthropogenic noise on aquatic fauna is increasing, as is the number of vessels in the world's oceans, lakes, and rivers. Sound…”
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Non-negative intensity for coupled fluid–structure interaction problems using the fast multipole method by Wilkes, Daniel R., Peters, Herwig, Croaker, Paul, Marburg, Steffen, Duncan, Alec J., Kessissoglou, Nicole

“…The non-negative intensity (NNI) method is applied to large-scale coupled fluid–structure interaction (FSI) problems using the fast multipole boundary element…”
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A modelling comparison between received sound levels produced by a marine Vibroseis array and those from an airgun array for some typical seismic survey scenarios by Duncan, Alec J., Weilgart, Linda S., Leaper, Russell, Jasny, Michael, Livermore, Sharon

“…Marine Vibroseis (MV) may provide a marine seismic sound source that has less environmental impact than conventional airguns. Modelled sound levels from a…”
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Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method by Wilkes, Daniel R, Duncan, Alec J

“…This paper presents a numerical model for the acoustic coupled fluid-structure interaction (FSI) of a submerged finite elastic body using the fast multipole…”
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Fluctuations of the peak pressure level of man-made impulsive sound signals propagating in the ocean by Galindo-Romero, Marta, Gavrilov, Alexander, Duncan, Alec J.

“…The theory of wave propagation and fluctuations in random media has been broadly studied; however the works studying the influence of a changing underwater…”
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A Detailed Comparison Between a Small-Slope Model of Acoustical Scattering From a Rough Sea Surface and Stochastic Modeling of the Coherent Surface Loss by Jones, Adrian D., Duncan, Alec J., Maggi, Amos L., Bartel, David W., Zinoviev, Alex

“…The accurate modeling of underwater acoustical reflection from a wind-roughened ocean surface is a challenging problem. Some complicating factors are the…”
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Regional Variations and Trends in Ambient Noise: Examples from Australian Waters by McCauley, Robert D, Cato, Douglas H, Duncan, Alec J

“…Studies of ambient noise south of Australia show higher levels at low frequencies in the deep water off the continental shelf compared with locations on the…”
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Potential Use of Broadband Acoustic Methods for Micronekton Classification by Verma, Arti, Kloser, Rudy J., Duncan, Alec J.

“…Broadband acoustic methods are an emerging technology with potential use in identification and classification of marine organisms. The application of broadband…”
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Characteristics of sound propagation in shallow water over an elastic seabed with a thin cap-rock layer by Duncan, Alec J, Gavrilov, Alexander N, McCauley, Robert D, Parnum, Iain M, Collis, Jon M

“…Measurements of low-frequency sound propagation over the areas of the Australian continental shelf, where the bottom sediments consist primarily of…”
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Underwater Acoustic Signatures of Recreational Swimmers, Divers, Surfers and Kayakers by Erbe, Christine, Parsons, Miles, Duncan, Alec J., Allen, Kim

“…Non-motorised, recreational water activities were recorded underwater in the controlled setting of a public swimming pool during the off-season. Individuals,…”
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Developing an Underwater Sound Recorder: The Long and Short (Time) of It by McCauley, Robert D., Thomas, Frank, Parsons, Miles J. G., Erbe, Christine, Cato, Douglas H., Duncan, Alec J., Gavrilov, Alexander N., Parnum, Iain M., Salgado-Kent, Chandra P.

“…Passive acoustic recording of marine noise has advanced considerably over recent years. For a long time, a lack of widely available technology limited the…”
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Low-Frequency Acoustic Propagation Modelling for Australian Range-Independent Environments by Koessler, Matthew W., Duncan, Alec J., Gavrilov, Alexander N.

“…Large portions of the Australian continental shelf have a seabed composed of layered cemented or semi-cemented calcarenite. This work investigates the ability…”
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Underwater particle motion (acceleration, velocity and displacement) from recreational swimmers, divers, surfers and kayakers by Erbe, Christine, Parsons, Miles, Duncan, Alec J., Lucke, Klaus, Gavrilov, Alexander, Allen, Kim

“…When humans take to the water, they generate sound. This is helpful for the detection, classification, localisation and tracking of certain activities for…”
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An Experimental and Numerical Investigation of the Vibrational Response of a Flanged Cylinder Structure by Wilkes, Daniel R., Matthews, David, Sun, Hongmei, Munyard, Andrew, Duncan, Alec J.

“…The paper presents a combined experimental and numerical investigation of the vibrational response of a flanged cylinder structure due to a time-harmonic point…”
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Long-range underwater acoustic detection of aircraft surface impacts—The influence of acoustic propagation conditions and impact parameters by Duncan, Alec J., Dall'Osto, David

“…The 2019 crash of an F35 fighter aircraft off the east coast of Japan was detected at a range of approximately 3000 km by a hydroacoustic station of the…”
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Revisiting acoustic detections made in the Indian Ocean at the time of the loss of MH370 by Dall'Osto, David R., Duncan, Alec J.

“…After an expansive multi-year undersea search, the whereabouts of airliner MH370 remains unknown. Given the energetics the crash, and the evidence (e.g.,…”
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Propagation of ship noise in shallow water over a high shear-speed seabed by Tollefsen, Cristina, Duncan, Alec J., Parnum, Iain M.

“…Assessing the acoustic impact of shipping close to the coast and within ports and harbours requires an understanding of the propagation of underwater sound in…”
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