IMOS - Southern Ocean Time Series (SOTS) - Annual Reports: 1998/1999

The Southern Ocean Time Series (SOTS) is a Sub-facility of Australia’s Integrated Marine Observing System (IMOS), which is enabled by the National Collaborative Research Infrastructure Strategy (NCRIS). IMOS is operated by a consortium of institutions as an unincorporated joint venture, with the University of Tasmania as Lead Agent. The primary focus is sustained observing of ocean properties and processes important to climate, carbon cycling, and ocean productivity.

SOTS consists of deep ocean moorings deployed in Subantarctic waters southwest of Tasmania, equipped with autonomous sensors and sample collectors. The SOTS moorings are serviced annually - the existing moorings are recovered and new moorings are deployed. Some sensor data is transmitted from the moorings via satellite in near real time. Other sensor data and samples are recovered during the annual service visit.

For each year, three reports are issued:
Report 1. Overview of mooring voyages, dates, locations, designs, instruments
Report 2. Samples from moored and shipboard sample collections
Report 3. Sensors mounted on the moorings moored and shipboard

These reports focus on metadata, i.e. descriptions of the moorings, sensors, samplers, and their deployment, recovery, processing, analysis and curation. Pointers are provided to supporting information from voyage reports and to on-line sources of the data. Shipboard sensor and sample measurements made during the service visits are also described.

Report 1. Overview - describes the deployment and recovery of the moorings. It provides their locations, drawings of their designs, and lists of each instrument deployed and the variables measured. It also summarizes ancillary measurements and sample collections made during the deployment and recovery voyages.

Report 2. Samples - describes 3 main types of samples and associated composition measurements:
1. Sediment trap samples collected by the Subantarctic Zone (SAZ) mooring.
2. Water samples collected by the RAS water sampler deployed on either the Pulse or Southern Ocean Flux Station (SOFS) mooring, and collected by the TM sampler deployed on the SOFS mooring.
3. Samples collected with other devices during the SOTS service voyages, e.g. from CTD Niskin bottles, in-situ pumps, continuous plankton recorders, and nets.
Note that not all these sample types were collected in any given year.

Report 3.Sensors provides:
1. Metadata on the sensor types, mounting, set-up, data availability and QC. This information is organized in tables for each mooring.
2. Links to access on-line sensor data from all SOTS moorings in the 1998-1999 year.
3. Description of and links to shipboard sensors records used for comparison to the moored sensors - note that Report 1. Overview provides links for standard shipboard sensors, and here we focus on additional sensor efforts with value for SOTS mooring sensor evaluations.

This metadata record represents the reports for the 1998/1999 research season.

南大洋时间序列观测系统（Southern Ocean Time Series, SOTS）是澳大利亚综合海洋观测系统（Integrated Marine Observing System, IMOS）的下属分设施，由国家协同研究基础设施战略（National Collaborative Research Infrastructure Strategy, NCRIS）资助支持。IMOS由多机构组成的联盟以非法人联合运营体的形式开展运营，塔斯马尼亚大学作为牵头执行方。其核心目标是对气候、碳循环及海洋生产力相关的关键海洋属性与过程开展长期持续观测。

SOTS由部署于塔斯马尼亚西南亚南极水域的深海锚系组成，配备自主传感器与样本采集装置。该系统的锚系设备每年开展一次维护作业：回收现有锚系并部署新锚系。部分传感器数据可通过卫星实现近乎实时回传；其余传感器数据与采集的样本则在年度维护航次中回收。

每年将发布三份报告：
报告1：锚定航次概况、日期、站位、设计及仪器清单
报告2：锚定与船载采集的样本
报告3：锚系与船载安装的传感器

这些报告聚焦于元数据（metadata），即锚系、传感器、采样器及其部署、回收、处理、分析与管理的相关描述。报告中提供了航次报告辅助信息及数据在线来源的检索指引，同时也会对维护航次中开展的船载传感器与样本测量工作进行说明。

报告1：概况——详细阐述锚系的部署与回收流程，给出其站位信息、设计图纸，列出每台部署的仪器及所测量的变量，同时汇总部署与回收航次中开展的辅助测量及样本采集工作。

报告2：样本——详细介绍三大类样本及相关组分测量内容：
1. 亚南极区（Subantarctic Zone, SAZ）锚系采集的沉积物捕获器样本
2. 搭载于Pulse锚系或南大洋通量站（Southern Ocean Flux Station, SOFS）的RAS水体采样器，以及搭载于SOFS锚系的TM采样器采集的水样
3. SOTS年度维护航次中通过其他设备采集的样本，例如CTD尼斯金采水器、原位泵、连续浮游生物记录仪及网具采集的样本。
注：并非每年都会采集所有类型的样本。

报告3：传感器——提供以下内容：
1. 各类传感器的元数据，包括传感器类型、安装方式、配置情况、数据可用性及质量控制（QC）信息。相关信息将按每个锚系整理为表格形式。
2. 1998-1999年度所有SOTS锚系的在线传感器数据访问链接。
3. 用于与锚定传感器对比的船载传感器记录的说明及访问链接：需注意，报告1：概况已提供标准船载传感器的访问链接，本报告将重点聚焦于可用于SOTS锚定传感器评估的额外传感器工作成果。

本次元数据记录对应1998/1999研究季的观测报告。