Collaborative Research: Quantifying Hydrothermal Flow and Heat Transfer Using Acoustic Imaging in the NEPTUNE Canada Cabled Observatory at Main Endeavour Field, JdFR

合作研究：在 Main Endeavor Field 的 NEPTUNE 加拿大有线观测站使用声学成像量化热液流动和传热，JdFR

• 批准号: 1234141
• 负责人: Karen Bemis
• 金额: $ 35.1万
• 依托单位: Rutgers University New Brunswick
• 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 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1234141&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; Hydrothermal; Flow

Due to the difficulty in working in the deep sea, especially around high-termperature hydrothermal vents that belch hot, corrosive, metal-rich fluids into ocean, novel instumentation needs to be developed and tested so important thermal and chemical fluxes associated with these systems can be determined. This research involves the testing, implementation, and data recovery from a unique acoustic sonar system (COVIS) that uses acoustic sonar and doppler phase shifts to make quantitative measurements of hydrothermal vent plume rise rates, volume fluxes, and plume shapes and distributions with time. Software will also be generated to enable processing of the resulting data and the extraction of heat fluxes, both in the plume emmanating from the hydrothermal vent and its rising thermal plume and from the diffuse flow of hot water along the seafloor around the vent. Field testing will occur at the Grotto hydrothermal vent cluster at the Endeavor vent field on the Juan de Fuca Ridge which is presently part of the Canadian mid-ocean ridge monitoring station. Resulting quantitative acoustic images of the plumes will be used to generate seafloor heat flux values that are fundamental to understanding the dynamics of hydrothermal venting. Three dimensional images of the hydrothermal plumes coming from the Grotto vents will also be generated. Project goals include determining linkages between time-varying flow measurements on the seafloor and fluxes higher in the water column. Broader impacts of the work include building infrastructure for oceanographic science in terms of developing hardware and software that will complement and potentially be implemented on NSF's newly installed Ocean Observing System infrastructure at the vent fields at Axial Volcano on the Juan de Fuca Ridge, which is slated to be instrumented in 2013. Additional impacts include international collaboration with Canadian scientists, support of an institution in an EPSCoR state (New Jersey), support of two PIs from groups under-represented in the sciences, training of graduate and undergraduate students, and public outreach through the NEPTUNE Canada and NOAA outreach engines.

由于难以在深海工作，尤其是在高期热水水热通风孔周围，这些通风孔将热，腐蚀性，富含金属的液体浸入海洋中，因此需要开发和测试新颖的Instumentation，因此可以确定与这些系统相关的重要热和化学通量。这项研究涉及从独特的声音声纳系统（COVIS）中进行测试，实施和数据恢复，该系统使用声音声纳和多普勒相移，以定量测量水热通风羽流率，体积磁通速率，体积磁通量以及羽状形状以及羽状形状和分布。还将生成软件以启用所得数据的处理和热通量的提取，这既在水热通风孔及其升高的热羽流以及沿着通风口围绕海底的热水的弥散流动的羽流中。现场测试将发生在胡安·德·富卡山脊的努力排气场的洞穴水热通风群集中，该山脊目前是加拿大中大海山脊监测站的一部分。羽毛的定量声学图像将用于产生海底热通量值，这对于理解水热通风的动力学至关重要。还将生成来自石窟通风孔的水热羽流的三维图像。项目目标包括确定在海底上的时变流量测量和水柱中更高的通量之间的联系。这项工作对海洋科学的更广泛的影响包括开发硬件和软件的建筑基础设施，这些硬件和软件将在NSF新安装的海洋观察到在Juan de Fuca Ridge上的轴心火山的通风山脉的NSF新安装的海洋观测系统基础设施上进行，并在2013年进行了支持。泽西岛），在科学领域不足的团体中的两个PI，研究生和本科生的培训，以及通过加拿大海王星和NOAA外展引擎的公共宣传。