Print Email Facebook Twitter Periodic changes in ambient noise: Possible causes and implications for long term prediction Title Periodic changes in ambient noise: Possible causes and implications for long term prediction Author Ainslie, M.A. Publication year 2013 Abstract Periodic changes in ambient noise have been observed on various timescales. Available long term measurements of periodic noise fluctuations are reviewed, with particular emphasis on those exhibiting periodicity appearing to coincide with that of the Sun. Evidence is offered supporting the suggestion that such fluctuations can be caused by diurnal and seasonal changes in sea surface temperature. (The diurnal changes are related to the well known “afternoon effect”, applied here to the noise instead of the signal.) If this hypothesis is confirmed, it implies that any future increase in noise due to increasing shipping would be at least partly offset by any increase in sea surface temperature. Subject Physics & ElectronicsAS - Acoustics & SonarTS - Technical SciencesDefence ResearchMarineDefence, Safety and SecurityUnderwater ambient noisePeriodic fluctuationsLong term trendsCTBTO To reference this document use: http://resolver.tudelft.nl/uuid:c73afb70-bc93-4ca5-8213-31da472cce8c TNO identifier 483506 Source Proceedings of 1st International Conference on Underwater Acoustics (UAC), 23-28 June 2013, Corfu, Greece, 655-662 Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.