Collaborative Research: Dynamics of eruptive plumes above a submarine arc volcano

合作研究：海底弧火山上方喷发羽流的动力学

• 批准号: 1232431
• 负责人: Joseph Resing
• 金额: $ 3.14万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1232431&HistoricalAwards=false
• 关键词: Collaborative; Research; Dynamics; eruptive; plumes

The ability to maximize usage and develop new tools for exploring the ocean, in particular the behavior and features that occur within the water column is important both for US oceanographic research capacity as well as increasing the effectiveness of investment in sea-going platforms and infrastructure. This research explores the possibility of expanding the capability of multi-beam sonar systems recently installed on some ships in the University National Oceanographic Laboratory System (UNOLS) fleet. The research will consist of analyzing mid-water sonar soundings serendipitiously collected on a cruise of exploration to Rota 1, an actively erupting undersea volcano in the western Pacific Ocean, while investigators were studying the eruption dynamics and volcanological deposits from the volcano. During the cruise, it became evident that the new sonar ws able to inage volcanic gasses that were emmanating from the eruption and being expressed as trains of bubbles coming from the volcanic vent. Research will include examination and processing of the new sonar data to try and extract eruption plume height, intensity, and direction as well as how these change with time. It will also compare the mid-water plume results to visual and chemical data collected for purposes of the originally funded project so that the results can be calibrated with complementary physical measurements taken by remotely controlled submarine vehicles that were simultaneously operating in the area. A major goal of this newly funded work will be to gauge the usefulness of mid-water multibeam bubble train datasets and find out what can be learned from these data in terms of understanding undesea volcanic activity. If successful, the same techniques could be applied to better understand low temperature seeps on continental margins and bubble trains associated with marine gas hydrate deposits. Broader impacts of the work include the development of new infrastructure for science by developing a new mid-water imaging capability for multi-beam sonar on UNOLS ships and graduate student training.

最大化使用和开发新工具以探索海洋的能力，尤其是水柱中发生的行为和特征对于美国海洋研究能力既重要又提高了对海上平台和基础设施的投资有效性。这项研究探讨了扩大最近在大学国家海洋实验室系统（UNOLS）车队中安装在某些船舶上的多光束声纳系统能力的可能性。 这项研究将包括分析在向Rota 1的勘探巡游中偶然收集的中水声音声音，Rota 1是西太平洋中积极爆发的海底火山，而研究人员正在研究火山的喷发动力学和火山矿床。在巡航期间，很明显，新的声纳ws能够吞噬从喷发中散发出来的火山气体，并以来自火山通风口的气泡而表达。 研究将包括研究和处理新的声纳数据，以尝试提取喷发羽高，强度和方向以及这些时间如何随时间而变化。它还将将中间羽流的结果与最初资助的项目的目的收集的视觉和化学数据进行比较，以便可以通过在该地区同时运行的远程控制的海底车辆进行互补的物理测量来校准结果。这项新资助的工作的一个主要目标是评估中水多型气泡火车数据集的有用性，并了解从这些数据中了解什么，以理解UNDESEA火山活动。如果成功，则可以应用相同的技术来更好地了解与海洋气体水合物沉积相关的大陆边缘和气泡列车上的低温渗漏。这项工作的更广泛的影响包括开发新的科学基础设施，通过为UNOLS船上的多光束声纳和研究生培训开发新的中水成像能力。