使用多种方法对阿瓦什上部的火山水层进行区域地下水流系统的描述,埃塞俄比亚中部
Kidist Hailu1, Behailu Birhanu1, Tilahun Azagegn1
1School of Earth Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
Isotopes in environmental and health studies
|June 16, 2023
概括
地下水流系统混合了来自雨水的深度区域充电和浅层本地充电. 城市化带来了当地充电区的风险,需要对污染和气候变化影响进行保护.
科学领域:
- 水文地质学 水文地质学
- 环境科学 环境科学
- 水资源管理 水资源管理
背景情况:
- 了解地下水流对于可持续的水资源管理至关重要.
- 地下水系统受到区域和地方充电动态的影响.
- 城市化给地下水资源带来了独特的挑战.
研究的目的:
- 描述研究区域内地下水的补充,流动和排放情况.
- 区分深层地下水和浅层地下水流系统.
- 评估城市化对地下水充电区的影响.
主要方法:
- 在109个钻井中,电导率 (EC) 和水温的垂直配置文件.
- 来自47个钻井的地下水样本的稳定同位素分析 (δ18O, δ2H).
- 来自222Rn测量和压度证据的补充数据.
主要成果:
- 地下水由两种系统混合而成:来自高原的深度区域流动和来自雨水的浅处本地充电.
- 地方充电区位于城市化和工业化地区.
- 这些城市化区域面临充电减少和污染增加的风险.
结论:
- 地下水资源容易受到城市充电区污染的影响.
- 保护地下水免受污染至关重要.
- 提高地下水对气候变化的适应性是一个至关重要的需要.
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