Collaborative Research: Quantifying Seasonal and Interannual Changes in Shelf-Derived Material Inputs to the Arctic Ocean: The Arctic Radium Isotope Observing Network (ARION)

合作研究：量化北冰洋陆架衍生物质输入的季节性和年际变化：北极镭同位素观测网络（ARION）

• 批准号: 2031853
• 负责人: Lauren Kipp
• 金额: $ 35.02万
• 依托单位: Rowan University
• 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: 2021-02-01 至 2026-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2031853&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; Seasonal; Interannual

Within the Arctic Circle, rapidly rising air and sea temperatures have resulted in the loss of sea ice, increased river discharge, coastal erosion, and permafrost thaw. Many of these changes are adding nutrients and carbon to the shallow seas that surround the Arctic Ocean, specifically by increasing interactions with sediments on the land or those over the continental shelf. Importantly, the resulting changes are not limited to the coastal seas: added nutrients and carbon can be transported to the central Arctic Ocean via strong surface currents. Climate-related changes in Arctic Ocean chemistry may therefore influence primary production across the Arctic, and ultimately affect the amount of nutrients reaching the North Atlantic via Arctic outflow. This project will fill an important research gap by monitoring interannual and seasonal changes in radium isotopes as proxies for chemical inputs to the Arctic Ocean that are sourced in sediments, with a focus on the transfer of elements from the shelf seas to the central Arctic.Radium isotopes are continuously produced at ocean boundaries and are soluble in seawater. Radium therefore serves as an analogue for similarly sourced shelf-derived materials, including biologically important elements such as carbon, nutrients, and trace metals. To test the hypothesis that climate change is leading to increased delivery of terrestrially-derived solutes to the Arctic Ocean, radium levels will be measured on bi-annual cruises along the Laptev and East Siberian Sea margins (to capture interannual changes) and on a first-of-its kind in situ radium isotope sampler (to capture seasonal changes). These sampling efforts will be complemented by an international network of collaborators that will contribute data to create an Arctic Radium Isotope Observing Network (ARION) that spans the Arctic Ocean and will serve the greater scientific community. The project will also partner with an artist-explorer to communicate the importance of this research to the general public through exhibitions at a local museum.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.

在北极圈内，迅速上升的空气和海温导致海冰丧失，河流排放增加，沿海侵蚀和多年冻结融化。这些变化中的许多变化是在围绕北极海洋的浅海中增加营养和碳，特别是通过增加与土地上的沉积物或大陆架上的沉积物的相互作用。重要的是，所产生的变化不仅限于沿海海洋：添加的养分和碳可以通过强的表面电流运输到北极海洋中央海洋。因此，与气候相关的北极海洋化学变化可能会影响整个北极的一级生产，并最终影响通过北极流出到达北大西洋的养分量。该项目将通过监测赖赖辐射量的年度和季节性变化作为化学输入到北极海洋中的代理，以填补一个重要的研究差距，并以沉积物为代理，重点是将元素从架子海洋转移到中央北极。因此，镭是类似采购的架子衍生材料的类似物，包括碳，养分和微量金属等生物学上重要的元素。为了测试气候变化导致陆地衍生的溶质向北极海洋的递送的假设，将在沿Laptev和East Siberian Seabian Sea Laptes和East Siberian Sea Erinals和East Siberian Sea Ergins（以捕获原住民的变化）以及首先使用的原位radioum同位同位素采样者（以捕获季节性更改）上测量镭的水平。这些抽样工作将得到国际合作者网络的补充，该网络将贡献数据，以创建一个北极同位素观察网络（ARION），该网络跨越北极海洋，并将为更大的科学界服务。该项目还将与艺术家探索者合作，通过当地博物馆的展览将这项研究的重要性传达给公众。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响来通过评估来支持的。

项目成果

Arctic Radium Isotope Observing Network (ARION) 2021- radium, water isotopes, and salinity along Laptev & East Siberian Sea margins

北极镭同位素观测网络 (ARION) 2021 - 拉普捷夫沿线的镭、水同位素和盐度

• DOI: 10.18739/a2n58cn3b
• 发表时间: 2023
• 期刊: NSF Arctic Data Center
• 作者: Kipp, Lauren;Charette, Matthew
• 通讯作者: Charette, Matthew

Radium, water isotopes, and salinity on the East Siberian Sea slope - NABOS 2018

东西伯利亚海坡上的镭、水同位素和盐度 - NABOS 2018

• DOI: 10.18739/a2fb4wn6b
• 发表时间: 2023
• 期刊: NSF Arctic Data Center
• 作者: Kipp, Lauren;Charette, Matthew
• 通讯作者: Charette, Matthew

Radium Isotopes as Tracers of Shelf‐Basin Exchange Processes in the Eastern Arctic Ocean

镭同位素作为北冰洋东部陆架盆地交换过程的示踪剂

• DOI: 10.1029/2023jc020303
• 发表时间: 2023
• 期刊: Journal of Geophysical Research: Oceans
• 作者: Kipp, Lauren;Charette, Matthew;Robbins, Alyssa;Pnyushkov, Andrey;Polyakov, Igor;Whitmore, Laura
• 通讯作者: Whitmore, Laura