洞穴潜水文档 空间和时间的水质变量在一个水,卡斯特洞穴系统
Mahnoor Kamal1, Patricia Spellman1, Sunhye Kim1
1School of Geosciences, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL, 33620.
Ground water
|July 31, 2025
概括
洞穴潜水揭示了岩含水层中复杂的水质变化,显示了土地使用如何影响地下水. 这种方法有助于确定充电区,以便更好地管理水资源.
科学领域:
- 水文地质学 水文地质学
- 环境科学 环境科学
- 地质化学 地质化学
背景情况:
- 由于二次多孔性,岩水层表现出复杂的地下水流.
- 城市和农业用地使用可以引入污染物,使天然水质信号复杂化.
- 传统的采样方法可能会忽略在岩系统中的水质异质性.
研究的目的:
- 记录佛罗里达水库系统 (FAS) 内的水中洞穴系统的空间和时间水质变化.
- 利用洞穴潜水进行详细的水质评估,提高对水资源管理的理解.
- 确定充电途径和土地利用对地下水质量的影响.
主要方法:
- 进行洞穴潜水探险在一个phreatic洞穴系统.
- 收集连续15秒测量溶解氧气,温度,pH值和特定导电量,沿着1.1公里的截面进行测量.
- 在各种地点收集分立的水化学样本,以检测营养素,有机物质和主要离子,包括弹通风.
主要成果:
- 特定导电量,溶解氧,温度和pH值显示出一致的空间变化,表明直接充电区域.
- 酸盐-化物 (NOx-N),溶解的氧气和溶解的有机碳表现出最显著的空间和时间变化.
- 特定导电率和NOx-N之间的正相关性,以及与碳酸盐相关离子的负相关性,表明农业用地影响.
结论:
- 岩洞穴系统显示了复杂的水质模式,受充电和土地使用的影响.
- 洞穴潜水为地下水异质性提供了宝贵的见解,有助于解释离散采样数据.
- 这些发现为水质恢复工作和在类似的岩环境中进行未来研究提供了指导.
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