Collaborative Research: Quantifying the contribution of alpine glacier meltwater to mountain-block recharge using microbiological markers and environmental isotopes

合作研究：利用微生物标记和环境同位素量化高山冰川融水对山体补给的贡献

基本信息

批准号：
1904159
负责人：
Trinity Hamilton
金额：
$ 19.15万
依托单位：
University of Minnesota-Twin Cities
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-07-15 至 2022-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1904159&HistoricalAwards=false
关键词：
Collaborative Research Quantifying contribution alpine

项目摘要

Glaciers occur in mountains across the globe. Water from melting glaciers is important to humans and other organisms. Some of this water goes directly to streams while some will flow deep into the ground and refill groundwater. It is not known how much melt-water goes directly to streams versus to groundwater. This project uses water chemistry and biological data to determine where the water goes when a glacier melts. The project examines water from glaciers on Mt. Hood in Oregon and from glaciers in Glacier National Park in Montana. This project is training graduate students and multiple undergraduate students. The results are presented at scientific meetings and to water managers. The results are also available to the public via pamphlets and news articles. More than ninety percent of the Earth's alpine glaciers are in retreat and many of these glaciers will melt completely within this century. Very little research has been conducted on the impacts of alpine glacial meltwater to recharge and flow within the mountain block. This project seeks to identify the contribution of alpine glacial meltwater to mountain recharge relative to seasonal snow and rain using chemical and biological approaches. This research tests the following hypotheses: 1) The glacial environment selects for unique biota resulting in deoxyribonucleic acid (DNA) fingerprints in alpine glacial meltwater that are distinct from seasonal snow and rain; 2) Alpine glacial meltwater is a significant source of mountain recharge and sustains perennial flow to local and regional-scale springs located down-gradient of alpine glaciers. This research assesses the novel application of DNA as a tracer for mountain recharge and increases the ability to detect recharge from alpine glaciers located in different geologic and geographic settings. This study trains graduate students and multiple undergraduate researchers and engages with water managers.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.

冰川出现在全球山上。融化冰川的水对人类和其他生物很重要。其中一些水直接流向溪流，而有些水则将其深入地下水并重新填充地下水。尚不知道多少熔融水直接进入溪流与地下水。该项目使用水化学和生物数据来确定冰川融化时水的去向。该项目研究了俄勒冈州山顶冰川的水以及蒙大拿州冰川国家公园的冰川。该项目是培训研究生和多名本科生。结果在科学会议和水管理人员中提出。结果也可以通过小册子和新闻文章向公众提供。地球上高山冰川中有90％以上，其中许多冰川将在本世纪内完全融化。关于高山冰川融水对山区街区充电和流动的影响的研究很少。该项目旨在使用化学和生物学方法来确定高山冰川融化对山区补给相对于季节性降雪和雨水的贡献。这项研究检验以下假设：1）冰川环境选择独特的生物群，从而在高山冰川融合水中产生脱氧核糖核酸（DNA）指纹，这与季节性的降雪和雨水不同。 2）高山冰川融化是山区充电的重要来源，并保持了多年生流向位于高山冰川下层的局部和区域尺度弹簧。这项研究评估了DNA作为山地充电的示踪剂的新颖应用，并提高了从不同地质和地理环境中的高山冰川中检测充电的能力。这项研究培训了研究生和多名本科研究人员，并与水管理人员互动。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响评估标准，被认为值得通过评估来获得支持。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Recharge from glacial meltwater is critical for alpine springs and their microbiomes

冰川融水的补给对于高山泉水及其微生物组至关重要

DOI：
10.1088/1748-9326/abf06b
发表时间：
2021
期刊：
Environmental Research Letters
影响因子：
6.7
作者：
Miller, Jordyn B.;Frisbee, Marty D.;Hamilton, Trinity L.;Murugapiran, Senthil K.
通讯作者：
Murugapiran, Senthil K.

Biological albedo reduction on ice sheets, glaciers, and snowfields