00674212

Component

http://onlinepubs.trb.org...trr/1994/1444/1444-020.pdf

https://scholar.google.co...enge&publication_year=1994

An airport ground-noise abatement study was conducted for the Port Authority of New York and New Jersey along the western boundary of New York City's La Guardia Airport between 1986 and 1988. The investigation included measurements to characterize multiple noise sources, analysis of noise abatement options, and postconstruction measurements. The noise barrier design was conducted by using one-third-octave band analysis to predict expected loss of excess ground attenuation, barrier insertion loss, and net noise reduction. The study used the DIFRCT model developed by Embleton, Piercy, and Isei to calculate noise barrier insertion losses in the presence of ground effects. Although an example of one particular application and not a thorough review of the model is provided, the following conclusions were noted. The modified DIFRCT model was useful in predicting the ground effect owing to soft ground, especially at lower frequencies. In addition the study indicated that the model may be limited in its applications to hard-ground situations because of lack of coherent long-distance propagation at higher frequencies.

This paper appears in Transportation Research Record No. 1444, Transportation Environmental Issues: Air, Noise, Water, Mitigation Processes, and Alternative Fuels. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01401280

English

p. 157-160

1994

Transportation Research Record

0309060508

Figures (3) ; References (8)

Computer models; Forecasting; Ground effect; Low frequency; Noise barriers; Noise control; Soft soils

LaGuardia Airport

Aviation; Environment; Highways

TRIS, TRB

Jan 31 1995 12:00AM

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