热分层和混合过程是对气象因素的反应,在一个单一的水库中
Yaning Wang1, Yiping Li1, Yue Cheng1
1Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
Journal of environmental management
|February 15, 2024
概括
空气温度和风力显著影响水库的热分层和混合. 了解这些动态,特别是在不同的深度,对于水库生态系统的健康和水质管理至关重要.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 水力动力学就是水力动力学.
背景情况:
- 水库的热分层及其生态系统影响是由气象和水文因素驱动的.
- 这些因素在不同水库深度中的相对重要性仍未得到充分研究.
- 西南中国的天宝水库,一个温暖的单体饮用水源,作为一个案例研究.
研究的目的:
- 量化分析水库中的混合和循环事件.
- 确定气象因素 (空气温度,风) 对水力动力学的相对重要性.
- 为了研究水温和混合的深度依赖反应.
主要方法:
- 使用了一个三维数值模拟模型.
- 补充了模拟与现场观测.
- 分析了分层强度,热线深度波动和混合过程.
主要成果:
- 空气温度和风是分层和混合的关键驱动因素.
- 空气温度上升10%将分层化增加18%;风速上升3米/秒将热线加深2.09米.
- 在冬季周转期间确定了透对流和风引起的混合;对流是主要的驱动因素.
- 与深处地区相比,浅处地区的水温对空气温度的反应更快,风引起的混合较浅.
结论:
- 空气温度和风在很大程度上控制了水库的水力动力学和热结构.
- 透对流是冬季营业额中占主导地位的力量,风剪有助于上层混合.
- 深度依赖的反应突出了水库物理过程的复杂性,为水质管理策略提供了信息.
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