RV Investigator Voyage IN2024_V04 CTD Data

This record describes the CTD data collected on Investigator voyage IN2024_V04, titled: "Linking East Australian Current dynamics and submarine canyon geomorphology to marine ecosystem hotspots." The voyage took place between June 07, 2024 and July 03, 2024 (AEST), departing from Sydney and returning to Brisbane.Data for 116 CTD deployments were acquired using the Sea-Bird SBE911 CTD unit #25 (S/N 1354), fitted with 36 twelve-litre bottles on the rosette sampler. Sea-Bird-supplied calibration factors were used to compute the pressures and preliminary conductivity values. CSIRO-supplied calibrations were applied to the temperature data. The data were subjected to automated QC to remove spikes and out-of-range values.Yoyo CTDs were undertaken at some stations, where CTD casts were performed consecutively at the same station to observe changes in the water column, without bottles fired or water samples taken. These casts were calibrated for conductivity and oxygen as per the calibrations determined from the samples taken throughout the voyage.Altimeter, PAR, chlorophyll-a, and Turbidity sensors were also installed on the auxiliary A/D channels of the CTD. A Lowered ADCP (LADCP), MicroRider, two Moana sensors and SVX2 Sound Velocity probe were also mounted on the CTD rosette for some casts. These additional instruments acquired data separately and are not included in the CTD datasets.The collected data were processed (quality-controlled), and subsequently archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).Additional information regarding this dataset may be contained in the Voyage Summary and the Data Processing Report.

本记录描述了“调查者号”（Investigator）科考船航次IN2024_V04采集的温盐深仪（CTD）数据，该航次主题为：“东澳大利亚海流动力学与海底峡谷地貌对海洋生态热点的关联研究”。本航次于2024年6月7日至2024年7月3日（澳大利亚东部标准时间）开展，从悉尼起航，最终返回布里斯班。

本次航次共完成116次CTD布放作业，所用设备为Sea-Bird SBE911型CTD设备#25（序列号1354），其搭载的多联采水器（rosette sampler）配备36个12升采水瓶。数据处理时，采用Sea-Bird原厂提供的校准因子计算压力值与初始电导率数值，温度数据则应用了澳大利亚联邦科学与工业研究组织（CSIRO）提供的校准方案进行校正。

所有数据均经过自动化质量控制流程处理，以剔除尖峰信号与超范围异常值。部分站位开展了悠悠CTD（Yoyo CTD）测量：即在同一站位连续开展CTD剖面观测，不触发采水瓶、不采集水样，以此监测水柱环境的动态变化。该类剖面的电导率与溶解氧数据，依据航次全程采集的水样校准结果完成了校正。

CTD设备的辅助模数转换（A/D）通道还搭载了高度计、光合有效辐射（PAR）传感器、叶绿素-a传感器与浊度传感器。在部分剖面测量中，CTD采水器还挂载了下投式声学多普勒流速剖面仪（Lowered ADCP, LADCP）、MicroRider传感器、两款Moana传感器以及SVX2声速剖面仪。上述附加仪器的数据为独立采集，未纳入本CTD数据集。

本次采集的数据已完成处理（含质量控制），并由CSIRO国家海洋数据与基础设施中心（National Collections and Marine Infrastructure, NCMI）信息与数据中心（Information and Data Centre, IDC）完成存档。本数据集的补充信息可参见航次总结报告与数据处理报告。