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Glacier Bay Watercraft Noise
| 题名： | Glacier Bay Watercraft Noise |
| 作者： | Kipple, B.; Gabriele, C. |
| 关键词： | Noise(Sound)##Watercraft##Measurements##Noise spectrum##Vessel speed##National parks##Vessel type##Underwater noise levels##Glacier Bay## |
| 摘要： | Underwater noise levels of 14 vessels operated by Glacier Bay National Park and Preserve were measured in 2000 and 2002. The vessels tested were from 14 to 65 feet in length and engine power ratings ranged from 25 to 420 horsepower. Most boats were evaluated at speeds of 10, 14, and 20 knots. These watercraft generated peak one-third octave noise levels ranging from 150 to 177 dB re 1 microPa at 1 yard and sound levels from 157 to 181 dB re 1 microPa at 1 yard. Noise levels depended on vessel type. |
| 总页数： | 66 |
| 报告类型： | 科技报告 |
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- Airport Activity and Noise Trends, October 1993.
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