230.548 People
Gaggero, Tomaso
University of Genoa
in Cooperation with on an Cooperation-Score of 37%
Topics
- water transportation
- water traffic
- assessment
- data
- comfort
- safety
- ship
- traffic management
- highway traffic control
- sea
- ocean
- weather condition
- designer
- seaworthiness
- identification system
- vehicle occupant
- map
- commodity
- road
- passenger
- contaminant
- infrastructure
- noise
- environmental impact
- railroad traffic
- railroad transportation
- supporting
- prevention
- traffic volume
- grievance
- state of the art
- noise source
- mooring
- regulation
- indicating instrument
- generator
- electric power conditioning
- passenger ship
- breath
- spectrographic analysis
- propeller
- ship noise
- work environment
- vibration
- electromagnetic spectrum
- pressure
- workplace
- effective sound pressure
- acoustics
- data analysis
- pH value
- military vessel
- pollution
- harbor
- frequency response
- chemical element
- layout
- face
- shipyard
- hydrophone
- signal processing
- ship trial
- sound transmission
- ultrasonics
- acoustic signature
- far field
- architecture
- propulsion
- shipbuilding
- animal
- plant
- database
- parametric analysis
- shipping
- cavitation
- controllable pitch propeller
- cavitation noise
- behavior
- interference
- monitoring
- aircraft
- traffic
- free surface
- mirror
- statistical analysis
- screw
- propeller noise
- broadband
- ambient noise
- research ship
- simulation
- vehicle fleet
- gas
- resistance
- price
- expense
- uncertainty
- natural gas
- multiple criteria decision making
- compressed natural gas
- operating costs
- ocean engineering
- reliability
- health
- coding system
- mechanical engineering
- annoyance
- survey
- employee
- public hearing
- loudness
- modeling
- urban area
- airport
- sleep
- industrial plant
- wharf
- validation
- traffic noise
- town
- instrumentation
- recall campaign
- quay
- pleasure craft
- ground transportation
- resident
- wildlife
- forecasting
- human being
- 20th century
- directivity pattern
- consensus
- transducer
- weight
- temperature
- sonar
- transmission loss
- mammal
- salinity
- engineering
- noise control
- fishing
- measuring method
- maintenance
- port
- coast
- preservation
- show 117 more
Publications
- 2022A method to assess safety and comfort for different ships types in a region of interest
- 2022Source characterization guidelines for noise mapping of port areas
- 2021Onboard ship noise: Acoustic comfort in cabinscitations
- 2020Analysis of literature data on shipboard noise
- 2018Editorial: Acoustical impact of ships and harbors: Airborne and underwater N & V pollutioncitations
- 2018On site propagation loss measurements through non-impulsive signal deconvolution
- 2017Parametric Analysis of Ship Noise Spectracitations
- 2017Acoustical behaviour of a passenger cabin of a Ro-Pax vessel
- 2017On the possibility of estimating ship parameters using acoustical Lloyd's mirror effect
- 2016Parametric Analysis of Ship Noise Spectracitations
- 2016Statistical analysis of ship noise records
- 2016Ship propeller side effects: pressure pulses and radiated noisecitations
- 2016Holistic control of ship noise emissionscitations
- 2016Simulation based design of a fleet of ships under power and capacity variationscitations
- 2016Seafarers' work exposure to tonal noise components
- 2016Airborne noise emissions from ships: Experimental characterization of the source and propagation over landcitations
- 2015Validation of a simulation tool for ship traffic noisecitations
- 2015MEASUREMENTS OF AIRBORNE NOISE EMITTED BY A SHIP AT QUAY
- 2014Holistic noise and vibration abatement within the EU 7FP. The SILENV Project: Ship Innovative soLutions to rEduce Noise and Vibrations.
- 2014Comparing ship underwater noise measured at sea with predictions by empirical models
- 2013Directivity Patterns of Ship Underwater Noise Emissions
- 2012RECENT ADVANCES IN THE CONTROL OF THE IMPACT OF THEUNDERWATER NOISE EMISSIONS BY COMMERCIAL SHIPS
- 2012UNCERTAINTIES IN MEASUREMENTS OF SHIP UNDERWATER NOISE EMISSIONS
- 2012RECENT ADVANCES IN THE CONTROL OF THE IMPACT OF THE UNDERWATER NOISE EMISSIONS BY COMMERCIAL SHIPS
- 2012Normative framework for Ship Noise: Present Situation and Future Trendscitations
- 2012SHIP UNDERWATER NOISE EMISSIONS: UNCERTAINTIES IN THE MEASUREMENTS AND IN THE EFFECTS ON THE MARINE ENVIRONMENT
- 2012Modelling the Outdoor Noise Propagation for Different Ship Types
- 2011Underwater noise emissions: Another challenge for ship design
- 2011Normative framework for noise emissions from ships: Present situation and future trends
Places of action
article
Parametric Analysis of Ship Noise Spectra
Abstract
A growing attention has been recently devoted to the impact of the underwater noise field generated by shipping activities on the marine fauna. A key aspect for the quantification of such impact is a proper model of the source levels radiated from the vessels. At a first level of approximation, simplified formulations based on a small number of macroparameters describing the ship characteristics are needed to quantify the emission and, accordingly, assess the noise impact and evaluate strategies for its control. In fact, a few models of this kind are available in the literature, mainly based on measurements and databases developed for military purposes. Most of these models have been tuned on old ships: this poses the question whether they are still applicable to modern commercial vessels. In this work, spectra of a series of measurements of underwater noise emitted by commercial vessels measured in the framework of two EU FP7 projects (SILENV: www.silenv.eu and AQUO: www.aquo.eu) are analyzed and compared with the results obtained applying the available literature models. The analysis is carried out for noise emitted both at design and off-design conditions. In such conditions, the models are also compared with a proposed spectral parametrization. Focusing on the off-design conditions, a detailed narrow band analysis of a complete set of noise spectra is presented for a ship equipped with a controllable pitch propeller (CPP). The spectral peculiarities of such a propulsion plant, when operated at constant revolutions per minute (RPM) are highlighted. Results of the suggested parametrization applied to the same ship are presented together with the data of other CPP ships and a critical analysis is carried out discussing the limits of the existing predictive models.
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