Collaborative Research: Benthic Observatory and Technology Testbed On the Mid Shelf -- Understanding Processes

合作研究：中层海底观测站和技术测试台——了解过程

• 批准号: 0536326
• 负责人: William Savidge
• 金额: $ 109.67万
• 依托单位: Skidaway Institute of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0536326&HistoricalAwards=false
• 关键词: Collaborative; Research; Benthic; Observatory; Technology

P.I. Savidge, William (Skid) Proposal #: 0536326PROJECT TITLE: Benthic Observatory and Technology Testbed On the Mid Shelf-Understanding ProcessesProject SummaryThe PIs propose to augment an existing observatory array to investigate benthic exchange in sandy sediments. The existing observational array will be augmented with an assortment of sensors designed to measure fluid forces and physical and geochemical responses near, at, and below the seabed. Some sensors represent existing technology, some represent relatively new technology in development, and others will be developed, tested, and deployed as part of this project (subseabed thermistor and redox sensor arrays, benthic chlorophyll fluorescence imaging). Present instrumentation includes meteorological packages, ADCPs, surface and bottom CTDs, fluorometers and PAR sensors. The observatory instrumentation will be used to characterize the seabed response to physical forces acting across a spectrum of time scales. The frequency, intensity, and timing of energetic events will be detected within the water column, and their manifestation within the BBL will be followed. BBL instrumentation will measure thresholds of bed motion and characterize near-bed suspended loads, and will be used to estimate pressure fields and advective fluxes at the interface. In situ geochemical sensors will be used to characterize rates of advection of properties within the sediment and connect those properties to both physical forcing above the interface and biological forcing driven by seasonal and diurnal cues. The combination of instrumentation and observational strategies will produce a holistic portrait of the causes and consequences of benthic exchange processes in permeable sediments.

P.I. Savidge，William（Skid）提案编号：0536326项目名称：中陆架海底观测站和技术试验台-理解过程项目摘要PI建议增加现有观测站阵列，以调查桑迪沉积物中的海底交换。现有的观测阵列将增加各种传感器，以测量海底附近、海底和海底以下的流体力以及物理和地球化学反应。有些传感器是现有技术，有些是正在开发的较新技术，其他传感器将作为本项目的一部分进行开发、测试和部署（海底热敏电阻和氧化还原传感器阵列、海底叶绿素荧光成像）。目前的仪器包括气象包、ADCP、表面和底部CTD、荧光计和PAR传感器。观测仪器将用于描述海底对各种时间尺度上的物理力的反应。频率，强度，和充满活力的事件的时间将在水柱内检测，并在BBL内的表现将被跟踪。BBL仪器将测量床运动的阈值和表征近床悬浮负荷，并将用于估计界面处的压力场和平流通量。现场地球化学传感器将被用来表征沉积物内的特性平流速率，并将这些特性与界面上方的物理强迫和季节性和昼夜线索驱动的生物强迫联系起来。将仪器和观测战略相结合，将全面了解可渗透沉积物中底栖生物交换过程的原因和后果。