EAGER: Collaborative Research: Using Available Sentry AUV aboard R/V Atlantis to Measure Hydrothermal Heat Flux at Axial and Main Endeavour Fields

EAGER：合作研究：使用 R/V Atlantis 上可用的 Sentry AUV 测量轴向和主奋进场的热液热通量

• 批准号: 1337473
• 负责人: James Kinsey
• 金额: $ 4.3万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-04-15 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1337473&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Using; Available

ABSTRACTThis project leverages available AUV Sentry and R/V Atlantis time to implement and test new methods for quantifying heat and fluid fluxes at deep-sea hydrothermal vents. Simultaneous AUV-mounted flow velocity and temperature gradient measurements will be obtained and corrections for vehicle motion will be used to compute flux in/out of a control volume that surrounds the known venting. At Main Endeavour Field on the Juan de Fuca Ridge, the control volume estimates will be compared to the 2000 FlowMow results to better delimit contributions of diffuse flow. At Ashes hydrothermal field on Axial Volcano, a series of surveys at 5 m height will help test the new method for measuring diffuse flow from an AUV. These near-bottom measurements will be validated and synthesized with direct measurements of diffuse and focused flow provided by camera systems deployed for a separate project. Simultaneous measurement of different scales (very near-bottom and control volumes of 100'm on each side) of heat flux and turbulence within the hydrothermal effluent is an expected outcome. The method developed will provide the oceanographic community with new capabilities for quantifying fluxes with AUVs at hydrothermal vents and possibly in other environments as well, including cold seeps and natural or artificial hydrocarbon leaks.

摘要该项目利用可用的 AUV Sentry 和 R/V Atlantis 时间来实施和测试量化深海热液喷口热量和流体通量的新方法。将获得同时安装在 AUV 上的流速和温度梯度测量值，并且对车辆运动的校正将用于计算进出已知通风口周围的控制体积的通量。在 Juan de Fuca Ridge 的 Main Endeavor Field，控制量估计值将与 2000 FlowMow 结果进行比较，以更好地界定扩散流的贡献。在轴火山灰烬热液场，在 5 m 高处进行的一系列勘测将有助于测试 AUV 测量扩散流的新方法。这些近底部测量将通过为单独项目部署的相机系统提供的扩散和聚焦流的直接测量来进行验证和综合。同时测量热液流出物内不同尺度（非常接近底部和每侧 100 米的控制体积）的热通量和湍流是预期的结果。所开发的方法将为海洋学界提供新的能力，用于量化热液喷口处以及其他环境中的 AUV 通量，包括冷泉和天然或人造碳氢化合物泄漏。