Raw underway Thermosalinograph (TSG) observations from the Algoa Voyage 254, November 2018

Here we present the 6-second resolution raw thermosalinograph (TSG) data collected, between 01 November and 14 November 2018, during Voyage 254 on the RS Algoa. A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). The West Coast Whale Cruise was conducted on the Algoa Voyage 254 between 1 and 14 November 2018. The cruise operated between the shelf, slope and offshore regions (<2000m depth) off the west coast of South Africa, between Cape Point (-34.36.111, 18.38064) and Groenriviermond (-30.8277, 17.52061). This cruise was undertaken for data collection as part of a collaborative project led by the Department of Environmental Affairs (DEA) in collaboration with the Whale Unit, Mammal Research Institute of the University of Pretoria, Department of Agriculture, Forestry and Fisheries (DAFF), National Oceanic and Atmospheric Administration (USA), Aqualie Institute (Brazil) and Oregon State University (USA). The greater programme is titled 'Large whale research - genetic relatedness, stock identification, abundance, feeding and migratory behaviours' and has two components, the east coast and west coast components. This cruise focused on the west coast humpback whales.

本报告呈现了于2018年11月1日至14日期间，在RS Algoa号第254次航行中收集的6秒分辨率原始热盐盐度计（TSG）数据。在研究和监测巡航期间，利用SeaBird SBE45热盐盐度计（TSG）偶然收集近表层温度和电导率测量数据。海水从位于船体船壳的吸入口持续泵送至TSG，观测数据与导航信息持续接口。靠近吸入口的温度传感器提供了进水温度（T1）的测量。通过电导率测量（C）准确计算盐水（S）的导电率，内部电导池中的水温（T2）被用于精确计算。2018年11月1日至14日，在Algoa航行第254次期间进行了西海岸鲸鱼巡航。巡航区域位于南非西海岸的沿岸、斜坡和离岸区域（深度小于2000米），从开普敦（-34.36.111，18.38064）至Groenriviermond（-30.8277，17.52061）。此次巡航是为了收集数据，作为由环境事务部（DEA）牵头，与比勒陀利亚大学哺乳动物研究所鲸鱼单位、农业、林业和渔业部（DAFF）、美国国家海洋和大气管理局（NOAA）、巴西Aqualie研究所和美国俄勒冈州立大学共同开展的合作项目的一部分。整个项目命名为‘大型鲸鱼研究——遗传相关性、种群鉴定、丰度、摄食和迁徙行为’，包含东海岸和西海岸两个部分。此次巡航主要关注西海岸座头鲸。