Heard Island fishing survey, Aurora Australis marine science cruise au0404 ("HIPPIES") - ship-based CTD, ADCP and underway data

Oceanographic data were collected on Aurora Australis Voyage 4 2003/2004, from December 2003 to February 2004, and a calibrated data set was created. The oceanographic program on the voyage was a part of the cruise-determining fish survey in the vicinity of Heard Island. A total of 42 CTD vertical profile stations were taken, most to within 5 m of the bottom. Over 450 Niskin bottle samples were collected and analysed on board, for calibration of the CTD conductivity sensors. Nutrient samples were also collected, but not analysed. Near surface current data were collected using a ship mounted ADCP. Data from the array of ship's underway sensors are included in the data set.The data report describes the processing/calibration of the CTD and ADCP data, and gives important details concerning data quality. An offset correction was derived for the underway sea surface temperature and salinity data, by comparison with near surface CTD data.These data form part of the overall dataset for ASAC project 2388 (ASAC_2388).

本数据集的海洋学数据采集于2003/2004年度南极光号（Aurora Australis）第4航次，采集时段为2003年12月至2004年2月，并已构建经过校准的数据集。本航次的海洋学调查任务为赫德岛附近海域巡航式鱼类资源调查项目的组成部分。本次调查共布设42个CTD（Conductivity, Temperature, Depth，温盐深仪）垂直剖面站位，绝大多数站位的观测水深距海底不足5米。为校准CTD电导传感器，研究团队共采集450余组尼斯金（Niskin）采水器水样并在科考船上完成现场分析。此外还采集了营养盐样本，但未开展相关分析工作。本数据集通过船载ADCP（Acoustic Doppler Current Profiler，声学多普勒流速剖面仪）采集了近表层海流数据，同时纳入了科考船走航传感器阵列的观测数据。配套的数据报告详细阐述了CTD与ADCP数据的处理及校准流程，并提供了关乎数据质量的关键细节。研究团队通过与近表层CTD观测数据的比对，为走航式海表温度与盐度数据推导得到了偏移校正值。本数据集为ASAC项目2388（ASAC_2388）整体数据集的组成部分。