Acquisition of a liquid water isotope analyzer for hydrological, glaciological and geochemical research

采购用于水文、冰川学和地球化学研究的液态水同位素分析仪

• 批准号: 0930016
• 负责人: Frank Schwartz
• 金额: $ 5.78万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-10-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0930016&HistoricalAwards=false
• 关键词: Acquisition; liquid; water; isotope; analyzer

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." This award will fund acquisition of a liquid oxygen isotope analyzer. The device is a reasonably new instrument relying on cavity ringdown spectroscopy. Precision specifications for this instrument are published at 0.1 permil and 0.3 permil for oxygen and deuterium isotope ratios, respectively. The instrument will be housed in the Water Science Laboratory at OSU. A technician will oversee the use, training and maintenance for the instrument. User fees will be used to pay for supplies and maintenance (but kept as low as possible). The PIs will evaluate requests from theses projects and adjust costs as low as possible. The liquid water isotope analyzer (LWIA) will be used to source apportion water (groundwater vs. overland flow) to understand carbon flow in natural and managed watersheds, to measure oxygen and hydrogen isotope ratios of surface meltwater in order to gain an understanding of storage, sources, residence time and transport of water associated with glaciers, to understand precipitation, freezing, glacier dynamics and meltwater contributions to the hydrogeologic cycle over longer and higher resolution timescales (seasonal and interannaul), to calculate paleotemperatures using coral skeletal oxygen ratios which vary when deposited based on ambient temperature, and overall to employ isotopic analysis to better understand climate change and biogeochemistry. The PIs have a history of producing graduates from women and minority sectors. PIs will conduct research with considerable societal relevance (watershed management impacts, climate forcings, hydrogeologic cycles). Undergraduates will be incorporated into research projects.

“该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“该奖项将资助购买液氧同位素分析仪。该装置是一个合理的新仪器依赖于腔衰荡光谱。该仪器的精度规格公布为0.1 permil和0.3 permil的氧和氘同位素比，分别。该仪器将被安置在俄勒冈州立大学的水科学实验室。一名技术人员将监督仪器的使用、培训和维护。使用费将用于支付用品和维护费用（但保持尽可能低）。PI将评估这些项目的要求，并尽可能降低成本。液态水同位素分析仪（LWIA）将用于水源分配（地下水与地表径流），以了解自然和管理流域的碳流动，测量表面融水的氧和氢同位素比率，以了解与冰川有关的水的储存、来源、停留时间和运输，了解降水、冻结、冰川动力学和融水在更长和更高分辨率时间尺度上对水文地质循环的贡献（季节性和年际），利用珊瑚骨骼氧比率计算古温度，这些比率在沉积时根据环境温度而变化，总的来说，利用同位素分析来更好地了解气候变化和地球化学。公共学院有培养妇女和少数民族毕业生的历史。PI将进行具有相当社会意义的研究（流域管理影响，气候强迫，水文地质循环）。本科生将被纳入研究项目。