A Long Deployment Benthic Chamber Sampler to "Piggyback" on a Bottom Transecting Free Vehicle

长距离部署底栖室采样器“搭载”在底部横断自由车辆上

• 批准号: 9404077
• 负责人: Timothy Shaw
• 金额: $ 7.96万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-15 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9404077&HistoricalAwards=false
• 关键词: Long; Deployment; Benthic; Chamber; Sampler

9404077 SHAW Temporal variation in the particulate flux to the deep sediment community drives variation in benthic respiration and the deposition of particle bound nutrients and minor elements. Particulate flux can be measured on a near continuous basis with sequencing sediment traps. However, particulate decomposition and the resultant benthic flux of dissolved species has been measured only for brief periods seasonally in the deep ocean. To address the need for more frequent measurements, a bottom transecting free vehicle "Rover" is being built to collect near continuous data on benthic community oxygen utilization. Complimentary measurement of the benthic flux of nutrients and minor elements will elucidate the relationship between productivity and burial for particle bound species. This project involves building a long development sampler to collect and preserve benthic chamber sampler which will "piggyback" the "Rover". The sampler will be made up of the controller and a series of syringe racks. Each rack will have the capability of collecting and preserving 18 chamber samples in duplicate. The controller will have the capacity to collect from eight racks. Four racks will be built for this project allowing six collections each for twelve emplacements of the benthic chamber over a six month deployment. This sampling frequency will allow a greater understanding of the seasonal variability of the biogeochemical cycling of nutrients and trace elements at the sediment water interface.

小行星9404077 进入深层沉积物群落的颗粒通量的时间变化驱动了底栖呼吸和颗粒结合营养物和微量元素沉积的变化。 颗粒通量可以在一个近乎连续的基础上与测序沉积物陷阱测量。 然而，在深海中，仅在季节性的短时期内测量了微粒分解和由此产生的溶解物种的底栖通量。 为了满足更频繁测量的需要，正在建造一个无底剖面的“漫游者”，以收集关于海底群落氧气利用的近乎连续的数据。 补充测量营养物和微量元素的底栖通量将阐明生产力与颗粒束缚物种埋藏之间的关系。该项目涉及建造一个长的开发取样器，以收集和保存底栖室取样器，该取样器将“搭载”“漫游者”。 采样器将由控制器和一系列注射器架组成。 每个样品架将能够一式两份收集和保存18个腔室样品。 控制器将有能力从八个机架收集数据。 将为该项目建造四个机架，在六个月的部署期间，每个机架可为底栖室的十二个安放点提供六次收集。 这一采样频率将有助于更好地了解沉积物-水界面营养物和微量元素生物地球化学循环的季节性变化。