RV Investigator Voyage IN2018_V05 CTD Data

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2018_V05, titled: "How does a standing meander south-east of Tasmania brake the Antarctic Circumpolar Current?" The voyage took place from Hobart (TAS) to Hobart between October 16 and November 16, 2018. Data for 77 deployments were acquired using the Seabird SBE911 CTD unit 24, fitted with 36 twelve litre bottles on the rosette sampler. Samples were collected on all casts. Sea-Bird-supplied and CSIRO calibration factors were used to compute the pressures and preliminary conductivity, oxygen and temperature data. Automated QC was applied to the data to remove spikes and out-of-range values.A Biospherical photosynthetically active radiation (PAR), Wetlabs transmissometer and Chelsea fluorometer were installed on the auxiliary A/D channels of the CTD. Two altimeters, a serial IMU and the LADCP unit was also attached to the rosette for all casts. A high resolution magnetometer/accelerometer to assist processing the LADCP data was attached to the frame, supplied by the University of Columbia, it was logging internally and the data downloaded to the ~\in2018_v05\science\CTD\Magnetometer folder in the voyage record.The collected data were subsequently processed and archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.本数据集记录了采集自海洋国家设施RV Investigator号航次IN2018_V05的温盐深（Conductivity-Temperature-Depth，CTD）数据，该航次的研究主题为：“塔斯马尼亚东南部驻留曲流如何减缓南极绕极流？”本次航次于2018年10月16日至11月16日期间开展，往返于塔斯马尼亚州霍巴特港。本次航次采用搭载36个12升采水瓶的罗塞特采水器（Rosette sampler），通过Seabird SBE911型CTD设备24号完成77次布放并采集数据。所有测站均采集了样本。计算压力、初始电导率、溶解氧及温度数据时，采用了Sea-Bird提供的校准系数与CSIRO校准系数。针对数据应用了自动化质量控制（QC）流程，以剔除尖峰信号与超限值。Biospherical公司生产的光合有效辐射（Photosynthetically Active Radiation，PAR）传感器、Wetlabs透射仪及Chelsea荧光仪均安装于CTD的辅助模数转换（A/D）通道。所有测站的罗塞特采水器还搭载了两台高度计、一台串行惯性测量单元（Inertial Measurement Unit，IMU）以及下层声学多普勒流速剖面仪（Lowered Acoustic Doppler Current Profiler，LADCP）单元。哥伦比亚大学提供的高分辨率磁力计/加速度计安装于采水器框架，用于辅助LADCP数据处理；该设备支持内部日志记录，数据将下载至航次记录中的~in2018_v05scienceCTDMagnetometer文件夹。采集所得数据后续由位于霍巴特的CSIRO海洋与大气（Oceans and Atmosphere，O&A）信息与数据中心（Information and Data Centre，IDC）完成处理与归档。该数据集的更多相关信息可查阅航次总结报告及CTD数据处理报告。