Aircraft noise in a high-rise city

✍ Scribed by N.W.M. Ko

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 233 KB
• Volume: 38
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1016/s0022-460x(75)80142-8

✦ Synopsis

In Hong Kong tall buildings are necessary to house the four and a half million people within a very limited coastal plain. Ten-storey, twenty-storey and even up to thirty-storey buildings are not uncommon.

The international airport of Hong Kong, Kai Tak, is situated within these highly populated areas of the high-rise city. A rough estimate suggests that the population adjacent to the airport amounts to halfa million. The daily average number of scheduled arrivals and departures amounts to 130 flights or more. All these flights are conducted on the single runway which has its flight paths either over the highly populated areas or over the sea. The height of the aircraft over these areas is less than 200 m and could reduce to 30 m just before touch-down.

Due to the channeling and shielding effects of the tall buildings, the local variation in aircraft noise level is very high. Thus, the noise contours of aircraft taking-off and landing