ダウンロード数 : ?
ファイル
言語
英語
著者
Yamada , Ichiro Airport Environment Improvement Foundation, Tokyo 105-0011, Japan
Yano, Takashi Department of Architecture, Kumamoto University, Kumamoto 860-8555, Japan
Makino , Koichi Kobayasi Institute of Physical Research, Tokyo 185-0022, Japan
Ohya, Masaharu Rion Co., Ltd., Tokyo 185-8533, Japan
内容記述(抄録等)
Many decibel-based noise indicators are used in noise policy to evaluate aircraft sound in the environment. Among those, day–evening–night-weighted sound pressure level ( Lden ), day–night-weighted sound pressure level ( Ldn ), and nighttime average sound pressure level ( Lnight ) are the most widely used. However, the designation of reference time intervals (e.g., day, evening, and night) differs depending on the country’s lifestyle and culture. A dataset—extracted from socio-acoustic surveys conducted in Vietnam (2005–2019)—was analyzed to investigate temporal patterns of the Vietnamese lifestyle and changes in Lden , Ldn , and Lnight when temporal interval segmentations in these indicators were adjusted. Traffic congestion hours, go-to-bed time, and wake-up time in southern Vietnam were approximately one hour later than those in northern and central Vietnam. Further, a small-scale and Internet-based questionnaire survey on Vietnamese life rhythms was conducted to examine Vietnamese people’s daily behaviors. These data were compared with the relevant data of Japanese individuals, extracted from the Survey on Time Use and Leisure Activities of Japan. Differences in sleeping times and mealtimes were found between Japanese and Vietnamese data. We suggest an appropriate reference time interval for aircraft noise policy in Vietnam, referring to the current national and international noise standards and regulations.
主題
aircraft noise indicators
temporal patterns
environmental quality standards
掲載誌名
Urban Science
4
2
ISSN
2413-8851
発行日
2020-04-20
DOI
出版者
MDPI
資料タイプ
学術雑誌論文
ファイル形式
PDF
関連情報
著者版/出版社版
出版社版
業績ID
e37854
部局
総合理工学部
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