Collaborative Research: EAGER: Expedited Measurement of Englacial Temperatures by Means of Melt-Probe-Deployed Distributed Temperature Sensing

合作研究：EAGER：通过熔体探针部署的分布式温度传感快速测量冰川温度

• 批准号: 2243607
• 负责人: Scott Tyler
• 金额: $ 3.88万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-12-15 至 2024-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2243607&HistoricalAwards=false
• 关键词: Collaborative; Research; EAGER; Expedited; Measurement

Knowledge of basal temperatures and geothermal fluxes underneath the Greenland and Antarctic ice sheets is key to modeling ice-sheet flow, to finding locations where climate records are preserved, and in general to better understand subglacial conditions that influence ice-sheet evolution. Yet such information has been difficult to acquire and there exist limited basal temperature and geothermal flux measurements from a few, isolated locations. This project will develop and test a new measurement capability that would couple unreinforced single-mode optical fiber with melt probe technology. The project aims to develop and test a capability that would greatly expand the number and distribution of temperature and flux observations from ice sheets. An immediate goal is to enhance the measurement capabilities of probes to be used by the Center for Oldest Ice Exploration (COLDEX) Science and Technology Center.The team will augment the capability of melt probes that are presently being built for COLDEX to deploy optical dust-loggers to depths up to 3000 m in Greenland and East Antarctica. The team will add to each probe 3000 m of single-mode optical fiber to unspool as the probe descends. Distributed Temperature Sensing at the deployment site will be realized with minimal additional surface equipment and a single additional field team member.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.

了解基础温度和格陵兰岛下方和南极冰盖下方的地热通量是建模冰盖流动，找到保留气候记录的位置的关键，并且通常可以更好地了解影响冰呈进化的地下冰川条件。然而，这些信息很难获取，并且从几个孤立的位置中的基础温度和地热通量测量都有有限的。该项目将开发并测试一种新的测量能力，该测量能力将使无质化的单模光纤与熔体探针技术相结合。 该项目旨在开发和测试能力，从而大大扩大冰盖的温度和通量观测的数量和分布。 一个直接的目标是增强最古老的ICE勘探中心（COLDEX）科学技术中心将使用的探针的测量能力。该团队将增强目前正在为Coldex部署光学尘埃量的熔体探针的能力，以部署光学尘埃粉碎机，以在绿地和东阿南阿蒂卡（Greenland and East Antarctica）中最多3000 M。随着探针下降，团队将添加到每个探针3000 m的单模光纤。部署现场的分布式温度感应将通过最少的其他表面设备和单一的外地团队成员来实现。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响审查标准，认为值得通过评估来获得支持。