South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) Monitoring Line on the Algoa Voyage 253, October 2018

The South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) Monitoring Line in the South-East Atlantic Ocean was conducted on the RS Algoa Voyage 253 from 01 October to 18 October 2018. The cruise operated from Slangkop, off Cape Town, westwards to 15° E, in the South Atlantic Ocean along the SAMBA transect. The objectives of the cruise were to recover an Acoustic Doppler Current Profiler (ADCP) mooring (M4) along the Integrated Ecosystem Programme (IEP)’s Scarborough Monitoring line to collect current data on the Benguela Jet Current; recover three tall moorings on the SAMBA transect (M8; M9 & M10), incorporating ADCP’s and Sea-Bird Microcats; complete 20 Conductivity, Temperature, Depth (CTD) full depth casts (using the containerised winch) along the SAMBA transect; undertake Chlorophyll and Oxygen sampling at CTD stations and underway along SAMBA transect; collect underway Thermosalinograph (TSG); Surface Photosynthetically Active Radiation (SPAR) and Ship-mounted Acoustic Doppler Current Profilers (S-ADCP) data and provide training to newly employed Department of Forestry, Fisheries and the Environment (DFFE) personnel and interns.

2018年10月1日至10月18日，在南大西洋东南部海域，我国科研船RS Algoa号执行了编号为253的航次任务。此次航次自开普敦附近的Slangkop出发，向西航行至南大西洋15°E经度，沿SAMBA横切线进行观测。航次的主要目标包括：沿综合生态系统计划（IEP）的Scarborough监测线回收声学多普勒流速剖面仪（ADCP）浮标（M4），以收集本格拉暖流的水流数据；回收SAMBA横切线上的三个高塔式浮标（M8、M9和M10），并包含ADCP和Sea-Bird Microcat；沿SAMBA横切线完成20次导电率、温度、深度（CTD）的全深度投放（使用集装箱式绞车）；在CTD站点及SAMBA横切线途中进行叶绿素和氧气采样；收集航次途中的温盐剖面仪（TSG）、表面光合有效辐射（SPAR）以及船载声学多普勒流速剖面仪（S-ADCP）数据；并对新聘用的林业、渔业和环境部（DFFE）人员和实习生进行培训。