估算印度德里大都市昼间等效水平的短期分层时间噪声监测策略

IF 1 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION
MAPAN Pub Date : 2024-06-14 DOI:10.1007/s12647-024-00759-w
Saurabh Kumar, Naveen Garg, Chitra Gautam
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引用次数: 0

摘要

本研究分析了用于估算印度德里市日等效声级(Lday 或 LAeq,上午 6 时至下午 10 时)的短期噪声监测策略的准确性。研究采用了德里污染控制委员会在德里市不同地点安装的 26 个实时噪声监测站收集的环境噪声监测数据。据观察,在一天中的三个采样间隔(上午 6 点至中午 12 点;中午 12 点至下午 4 点;下午 4 点至晚上 10 点)内随机选取的 1 小时等效噪声级的平均值,以 95% 的概率估算出 Lday,精确度为 ± 3.5 dBA。此外,研究人員建議採用分層時 間抽樣策略,監測環境噪音水平,以估算不同地區的等效日間噪音 水平,其中三個分層時段分別為上午 9 時至 11 時、下午 2 時至 3 時, 以及下午 5 時至 8 時(適用於商業及工業區);上午 9 時至 11 時、下午 12 時至 2 時,以及下午 5 時至 8 時(適用於住宅及寧靜區)。据观察,如果在三个分层时间间隔内各监测 1 小时,则可估算出所有四个区域的日等效噪音水平,准确度为 ± 2.0 分贝,概率为 95%。本研究可能有助于对印度大部分大都市进行噪声监测和绘图,因为连续长期(16 小时)的噪声监测可能是一个相当麻烦、耗时和昂贵的过程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Short-Term Stratified Temporal Noise Monitoring Strategies for Estimation of Day Equivalent Levels in Metropolitan City Delhi, India

Short-Term Stratified Temporal Noise Monitoring Strategies for Estimation of Day Equivalent Levels in Metropolitan City Delhi, India

The present work analyses the accuracy of short-term noise monitoring strategies for estimating day equivalent sound levels (Lday or LAeq,6 am–10 pm) in Delhi city, India. The ambient noise monitoring data collected from 26 real-time noise monitoring stations, installed by Delhi Pollution Control Committee at distinct locations in Delhi city was utilized for the study. It was observed that average of randomly selected 1-h equivalent noise levels monitored in three sampling intervals in a day—06 am to 12 pm; 12 pm to 4 pm; and 4 pm to 10 pm, estimated Lday with an accuracy of ± 3.5 dBA with 95% probability. A dditionally, a stratified temporal sampling strategy for monitoring environment noise levels to estimate the day equivalent level for different zones was proposed with three stratified temporal intervals—9 am to 11 am; 2 pm to 3 pm; and 5 pm to 8 pm for commercial and industrial zones, and 9 am to 11 am; 12 pm to 2 pm; and 5 pm to 8 pm for residential and silence zones. It was observed that the day equivalent noise level can be estimated with an accuracy of ± 2.0 dBA for all the four zones with 95% probability if the noise levels are monitored for 1 h in each of three stratified temporal intervals. The present study may be helpful in conducting noise monitoring and mapping for a larger part of metropolitan cities of India, as continuous long-term (16-h) noise monitoring can be a quite cumbersome, time-consuming, and expensive process.

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来源期刊
MAPAN
MAPAN 工程技术-物理:应用
CiteScore
2.30
自引率
20.00%
发文量
91
审稿时长
3 months
期刊介绍: MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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