Collaborative Research: How to trace glacial meltwater in the ocean using ship-portable hydrographic analysis of dissolved neon and krypton

合作研究：如何利用溶解氖和氪的船舶便携式水文分析来追踪海洋中的冰川融水

• 批准号: 2201836
• 负责人: Strawn Toler
• 金额: $ 25万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-10-15 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2201836&HistoricalAwards=false
• 关键词: Collaborative; Research; How; trace; glacial

This award will build a new instrument to measure meltwater from glaciers in the ocean. Distinguishing glacier melt from sea ice, snow melt, and rain is a difficult but important task because melting glaciers threaten significant and acute consequences, including chronic flooding and sea level rise. The causes and impacts of melting glaciers are a challenge to observe and predict, because they unfold in complex and hard to reach places: beneath miles of ice, under floating ice shelves, and during the coldest times of the year. The objective of this instrument is to increase oceanographer's capacity to measure and map glacier melt in the ocean by 300-400%, while reducing costs and providing near real-time results. This increase in measurement capacity will permit comparison of regional and seasonal changes in the glacier melt from the ice-covered land masses of Antarctica and Greenland. The instrument will be field validated in Rhode Island coastal waters, and then it will be used to measure glacier melt near the US Palmer Station on the Antarctic Peninsula. The partnership between the University of Rhode Island and SRI international presents an important public-private partnership that will encourage the use of private-sector technology for open access research, and recruit the future workforce in environmental sensing technology by employing undergraduate ocean engineers, supporting a Masters student in the completion of their degree, and through exhibit models of glacial ice shelves and their interactions with the ocean. This award seeks to advance tracing of glacier melt in the ocean by developing a ship-portable "meltwater mass spectrometer" that measures 20Ne, 22Ne, and 184Kr dissolved in water and seawater. This advance is possible thanks to developments in gas purification, but also thanks to a new analytical capacity to measure the mass-to-charge spectrum of neon that we predict will bring new precision to the analysis. Neon is an analyte that has proven difficult to resolve in portable noble gas analyzers. It will dramatically reduce cost and expand our existing sample capacity by eliminating complicated sample storage and the lag time between sample collection in polar regions and subsequent laboratory analysis at home. We further anticipate that it will be straightforward to incorporate the MWMS technology into the SRI International underwater mass spectrometer, enabling future AUV missions to inaccessible regions, such as calving fronts and ice shelf cavities. We will test and refine the MWMS prototype by leveraging RI State funding for ship time on the R/V Endeavor and again during a full field trial in Marguerite Bay as part of the annual Palmer LTER hydrographic expedition aboard the RVIB LM Gould.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.

该奖项将建立一种新的工具，以测量海洋冰川的融水。区分冰川融化与海冰，雪融化和雨水是一项艰巨但重要的任务，因为融化冰川会威胁着重大和急剧的后果，包括慢性洪水和海平面上升。熔化冰川的原因和影响是要观察和预测的挑战，因为它们在复杂而难以到达的地方展开：在冰上的冰上，在浮冰架下以及一年中最冷的时期。 该工具的目的是将海洋学家测量和映射海洋中的冰川融化的能力提高300-400％，同时降低成本并提供几乎实时的结果。测量能力的增加将允许比较南极和格陵兰冰层冰覆盖的土地质量的区域和季节变化。 该仪器将在罗德岛沿海水域进行验证，然后将其用于测量南极半岛美国帕尔默站附近的冰川融化。罗德岛大学和斯里国际大学之间的伙伴关系提出了一项重要的公私合作伙伴关系，该合作伙伴关系将鼓励使用私营部门技术进行开放访问研究，并通过聘请本科生的海洋工程师来招募未来的环境传感技术劳动力，从而通过其完成学位的学生来完成学位，并通过与他们的互动型互动和他们的互动模型，并与他们的互动模型。 该奖项旨在通过开发可溶解在水和海水中的20ne，22ne和184kr的船上的“融合水质谱仪”来推动冰川融化在海洋中的追踪。由于气体净化的发展，这是可能的，但也得益于我们预测的新的分析能力来衡量霓虹灯的质量到电荷频谱，这将为分析带来新的精度。 NEON是一种被证明在便携式贵气体分析仪中难以解决的分析物。它将通过消除复杂的样本存储以及极地地区样本收集之间的滞后时间与在家中随后的实验室分析之间的滞后时间大大降低成本并扩大我们的现有样本能力。我们进一步预计，将MWMS技术纳入SRI国际水下质谱仪将是很简单的，从而使未来的AUV任务能够进入无法接近的地区，例如产犊前沿和冰架腔。我们将通过利用RI国家资金在R/V努力上进行船舶时间进行测试和完善MWMS原型，并再次在Marguerite Bay的一次全面试验中，这是一年一度的Palmer水文探险队的一部分，这是NSF的法定任务，反映了值得宽泛的Intelliatia，这是NSF的奖励。