权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Investigating the scales of sustainability in groundwater extraction

调查地下水开采的可持续性规模

基本信息

批准号：
1806383
负责人：
Katherine Markovich
金额：
$ 17.4万
依托单位：
Markovich Katherine H
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1806383&HistoricalAwards=false
关键词：
Investigating scales sustainability groundwater extraction

项目摘要

Katherine H. Markovich has been granted an NSF EAR Postdoctoral Fellowship to carry out research and education plans at the University of Arizona. The key goal of the research is to investigate the relationship of groundwater age and sustainability. The two have often been conflated, but there has yet to be a mechanistic study linking the distributions of groundwater age encountered in a pumping well with the sustainability of extracting water from that well. This work will bring together stakeholders in Tucson such as water managers, native communities, urban residents, and industry representatives to establish mutually agreed upon parameters for groundwater sustainability, such as acceptable spatial and temporal scale of overdraft. The results of this stakeholder engagement will be explored using a combination of age tracers for residence time estimation and integrated hydrologic modeling. The study is important in linking groundwater age to sustainability using advanced modeling and age-dating techniques, as well as to advance national health and welfare, since access to clean water is paramount for the prosperity of communities in semi-arid and arid regions of the United States. Multiple age tracers will be linked with a sophisticated integrated hydrologic model to explore the full spatial and temporal scales of flow path and storage response to groundwater extraction, using the Tucson regional aquifer system as a case study. Extraction wells will be sampled for common age-dating tracers (Tritium-Helium and Carbon-13) to estimate the fraction of young and old water encountered in Tucson extraction wells, respectively, using a novel tracer (Argon-39) to estimate the intermediate age fraction. The integration of these three tracers will reveal a more complete distribution of flow paths contributing to a well, and thus provide insight as to the recharge and hydrogeologic characteristics of the regional aquifer system. These results will be used to validate an integrated hydrologic model (ParFlow-CLM) of the Tucson area via a particle tracking code (EcoSLIM). This step will result in a model that captures the dominant flow systems contributing to Tucson extraction wells. The posterior model will then be used to explore the relationship between groundwater age and sustainability, and project this relationship forward under climate change and population growth scenarios. This result will fill in the gaps in our understanding of flow path distributions to wells using non-overlapping age tracers and link those results to a sophisticated regional aquifer model that includes the upland recharge and contributing areas.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

凯瑟琳H. Markovich获得了NSF博士后奖学金，在亚利桑那大学开展研究和教育计划。研究的主要目的是探讨地下水年龄与可持续性的关系。这两者经常被混为一谈，但尚未有一项机制研究将抽水井中遇到的地下水年龄分布与从该井中抽水的可持续性联系起来。这项工作将汇集图森的利益相关者，如水管理人员，土著社区，城市居民和行业代表，以建立相互商定的地下水可持续性参数，如可接受的透支空间和时间规模。将使用用于停留时间估计和综合水文建模的年龄示踪剂组合来探索利益相关者参与的结果。这项研究对于使用先进的建模和年龄测定技术将地下水年龄与可持续性联系起来以及促进国家健康和福利非常重要，因为获得清洁水对于美国半干旱和干旱地区社区的繁荣至关重要。多个年龄示踪剂将与一个复杂的综合水文模型，以探索完整的空间和时间尺度的流动路径和存储响应地下水提取，使用图森区域含水层系统作为案例研究。将对抽取威尔斯井进行采样，以获取常见的年龄测定示踪剂（氚-氦和碳-13），从而分别估计图森抽取威尔斯井中遇到的年轻水和老水的比例，并使用新型示踪剂（氩-39）估计中间年龄比例。这三个示踪剂的整合将揭示一个更完整的分布的流路有助于一口井，从而提供洞察力的补给和水文地质特征的区域含水层系统。这些结果将被用来验证一个综合水文模型（ParFlow-CLM）的图森地区通过粒子跟踪代码（EcoSLIM）。这一步将产生一个模型，该模型捕获了对图森威尔斯提取井有贡献的主要流动系统。后验模型将用于探讨地下水年龄和可持续性之间的关系，并在气候变化和人口增长情景下预测这种关系。这一结果将填补空白，我们的理解流径分布威尔斯使用非重叠的年龄示踪剂和链接这些结果到一个复杂的区域含水层模型，包括高地补给和contributing areas.This award reflects NSF's法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。