The report summarizes that literature review, discussing sound divergence, atmospheric absorption, attenuation due to intervening hills and heavily wooded areas, soft-ground attenuation, and the acoustical descriptors that are of potential concern to the Park Service as the aircraft flies by. Finally, the report concludes with a summary of the effect of aircraft altitude upon sound levels on the ground, taking all these factors into account. Included in the summary is a discussion of the potential acoustical effectiveness of using altitude as a mitigation measure for any adverse effects of aircraft sound within the National Park System.


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    Title :

    Aircraft Overflight Study. Effect of Aircraft Altitude upon Sound Levels at the Ground


    Contributors:

    Publication date :

    1992


    Size :

    106 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English