IMOS - Deep Water Moorings - Southern Ocean Time Series (SOTS) Sub-Facility

IMOS - 深水系泊 - 南大洋时间序列 (SOTS) 子设施

• 批准号: global : a789bcd5-94c9-4efd-ac21-4257687cbb55
• 金额: --
• 依托单位国家: 澳大利亚
• 资助国家: 澳大利亚
• 起止时间: 0100-11-30 至 无数据
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/imos-deep-water-sub-facility/682000
• 关键词: IMOS; Deep; Water; Moorings; Southern

The Southern Ocean Time Series (SOTS) sub-facility provides high temporal resolution observations in sub-Antarctic waters. Observations are broad and include measurements of physical, chemical and biogeochemical parameters from multiple deep-water moorings. The emphasis is on inter-annual variations of upper ocean properties and their influence on exchange with the deep ocean. The time-series provided permit investigation into issues of ocean physics and chemistry, climate change, carbon cycling and biogeochemical controls on marine productivity. These moorings provide cost-effective observations and overcome the infrequent availability of ships in the region. <br /> <br /> The SOTS site is located in the sub-Antarctic Zone (SAZ), southwest of Tasmania, near 47S, 142E. SOTS observations are made from<br /> 1) a deep ocean sediment trap mooring, used to collect sinking particles to quantify carbon transports. This mooring also provides current meter measurements and a deep ocean CTD to measure heat contents below the depth of ARGO profiling float measurements.<br /> 2) the Pulse biogeochemistry mooring, used to measure upper ocean carbon cycle and phytoplankton productivity processes included sensor measurements of dissolved gases (O2, N2) and bio-optical properties. This mooring also collects water samples for measures of dissolved carbon and nutrients, and phytoplankton microscopic identification. Instrumentation was moved to the FluxPulse mooring in 2016, and then to the SOFS mooring (below).<br /> 3) additional biogeochemical sensors (CO2, O2, bio-optical, and bio-acoustic devices) mounted on the nearby Southern Ocean Flux Station air-sea flux mooring (and managed by the Air-Sea Flux Stations sub-facility). Instrumentation was briefly moved to the FluxPulse mooring in 2016.

南大洋时间序列（SOTS）子设施提供亚南极水域的高时间分辨率观测。观测范围广泛，包括从多个深水系泊处测量物理、化学和生物地球化学参数。重点是上层海洋性质的年际变化及其对与深海交换的影响。提供的时间序列允许对海洋物理和化学、气候变化、碳循环和对海洋生产力的生物地球化学控制等问题进行调查。这些系泊提供了具有成本效益的观测，并克服了该地区船只稀少的问题。< br / >