使用离散里埃转换识别污染动态:从一个城市-农村河流,墨西哥中部
P F Rodriguez-Espinosa1, Jorge Fonseca-Campos2, K M Ochoa-Guerrero1
1Centro Interdisciplinario de Investigaciones y Estudios Sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de Junio de 1520, Barrio La Laguna Ticomán, Municipio Gustavo A. Madero, C.P. 07340, Ciudad de México (CDMX), Mexico.
Journal of environmental management
|June 19, 2023
概括
阿托亚克河的实时水质监测揭示了与城市代谢和工业活动相关的循环污染模式. 离散的福里埃转换分析有助于预测和预防污染事件,以实现可持续的水资源管理.
科学领域:
- 环境科学 环境科学
- 水质监测 水质监测
- 时间序列分析时间序列分析
背景情况:
- 可持续发展和水体卫生对于人类生存至关重要.
- 墨西哥中部的阿托亚克河面临着污染挑战,影响水质.
研究的目的:
- 分析阿托亚克河水质数据中的循环性.
- 用先进的分析技术识别污染模式及其来源.
- 开发污染事件的预测模型,以支持公共政策.
主要方法:
- 从监测站收集了超过75万个实时水质记录.
- 使用离散里埃转换 (DFT) 进行时间序列分析.
- 应用多变量统计技术来识别污染极端.
主要成果:
- 确定了主要的污染事件周期,包括昼夜模式 (23-26h) 和与活动相关的信号 (3.3,5.5,12-14h).
- 与工业排放相关的无机 (金属,金属化物) 和有机 (杀虫剂,除草剂,碳化合物) 污染物.
- 在不同监测站检测到污染化合物的昼夜极端.
结论:
- 实时水质数据分析,特别是DFT,对于预测污染事件是有效的.
- 时间序列数据的数学分析可以指导污染预防策略.
- 调查结果支持制定监督和控制水污染的公共政策.
相关概念视频
Rapidly Varying Flow
105
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
105
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
74
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
74


