[古杜伊泉流域地下卡斯特水系统的水化学特征和形成原因]
Chun-Lei Tang1,2,3,4, Hao-Yong Shen1,4, Chun-Hong Zhao1,4
1Key Laboratory of Karst Dynamics, Institute of Karst Geology, Chinese Academy of Geological Sciences, Ministry of Natural Resources, Guilin 541004, China.
Huan jing ke xue= Huanjing kexue
|September 12, 2023
概括
这项研究揭示了古杜伊的春天.
科学领域:
- 水文地质学 水文地质学
- 同位素水文学 同位素水文学
- 地质化学 地质化学
背景情况:
- 古都泉是西省一个独特的中低温温泉,具有重要的文化历史.
- 对于了解区域水资源和地质过程至关重要的是地地下水系统.
研究的目的:
- 综合分析古杜伊泉流域的岩地下水的水化学和流水特性.
- 为了确定古杜伊泉的石地下水的起源和混合模式.
- 调查外部水源对古杜伊泉系统的影响.
主要方法:
- 系统的样本采集和分析.
- 水化学分析包括杜罗夫图,离子比和吉布斯图.
- 同位素分析,特别是和氧同位素 (δD和δ18O) 和同位素 (87Sr/86Sr).
主要成果:
- 石灰岩地下水是深层热水和浅层冷水的混合物,由Sr同位素和Mg/(Mg+Ca) 值证明.
- 在不同的石水子系统中,鉴定出不同的流水特征,受碳酸盐,岩性岩层和化岩层的影响.
- 同位素分析表明,古杜伊泉的水成分受到山泉水库的影响,而山泉水库受到黄河转移的影响.
- 水化学类型显示区域划分,表明水化学从HCO3-Ca·Mg演变为SO4·Cl-Na·Ca.
结论:
- 古杜伊泉的地地下水系统复杂,涉及各种水类的混合,受到自然充电和人为转移的影响.
- 了解这些水地质和水化过程对于可持续管理古杜伊泉和周围的石水资源至关重要.
- 该研究强调了区域水系统的相互联系,包括黄河水分流对当地泉源的影响.
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