Aurora Australis Marine Science Cruise AU1602, Dalton, Mertz and Ninnis CTDs - Oceanographic Field Measurements and Analysis

Oceanographic measurements were collected aboard Aurora Australis cruise au1602, voyage 2 2016/2017, from 8th December 2016 to 21st January 2017. The cruise commenced with a Casey resupply, followed by work around the Dalton Polynya/Moscow University Iceshelf, then the Mertz Glacier region, and then around the Ninnis Polynya. 14 stations at the southern end of the SR3 transect were also completed. Ice conditions prevented access to the front of the Totten Glacier. A total of 73 CTD vertical profile stations were taken on the cruise, most to within 12 metres of the bottom (Table 1). Over 800 Niskin bottle water samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate, ammonia and nitrite), dissolved inorganic carbon (i.e. TCO2), alkalinity, Th-234, POC, Chla, PAM, HPLC, Nd, Po-210/Pb-210, bacteria, O-18, caesium, and Teflon pollutants, using a 24 bottle rosette sampler. Full depth current profiles were collected by an LADCP attached to the CTD package. Upper water column current profile data were collected by a ship mounted ADCP. Meteorological and water property data were collected by the array of ship's underway sensors. 8 Argo floats were also deployed (Table 13) on the transit from Hobart to Casey.The data set contains CTD dbar data and Niskin bottle data (i.e. core hydrochemistry only - salinity, dissolved oxygen and nutrients). A detailed data report is included, with a description of the data and important data quality information.

本数据集采集自2016/2017年第2航次的「奥特罗斯·奥斯特拉利斯」号（Aurora Australis）科考船，航次执行时间为2016年12月8日至2017年1月21日。本航次首先完成凯西站（Casey）补给任务，随后依次在多尔顿冰间湖（Dalton Polynya）/莫斯科大学冰架（Moscow University Iceshelf）周边、默茨冰川（Mertz Glacier）区域以及尼尼斯冰间湖（Ninnis Polynya）周边开展科考作业，同时完成了SR3断面南端的14个站位观测。受海冰条件限制，科考队无法抵达托滕冰川（Totten Glacier）前缘区域。本航次共计完成73个温盐深仪（Conductivity Temperature Depth, CTD）垂直剖面站位观测，其中多数站位的探测深度距海底不足12米（详见表1）。科考团队使用搭载24个采水瓶的罗西特采样器（rosette sampler），共采集超过800个尼斯金采水瓶（Niskin bottle）水样，用于检测盐度、溶解氧、营养盐（磷酸盐、硝酸盐+亚硝酸盐、硅酸盐、氨及亚硝酸盐）、溶解无机碳（即总溶解无机碳TCO2）、碱度、钍-234、颗粒有机碳（POC）、叶绿素a（Chla）、PAM、高效液相色谱（HPLC）检测样品、钕（Nd）、钋-210/铅-210、细菌、氧-18、铯以及特氟龙（Teflon）污染物。全水深海流剖面数据由搭载于CTD组合装置的下放式声学多普勒海流剖面仪（Lowered Acoustic Doppler Current Profiler, LADCP）采集；上层水柱海流剖面数据则由船载声学多普勒海流剖面仪（ADCP）获取。气象与海水要素数据由科考船搭载的连续走航传感器阵列采集。此外，在从霍巴特（Hobart）前往凯西站的航渡阶段，科考队共部署了8个Argo浮标（详见表13）。本数据集包含CTD压力深度（dbar）数据以及尼斯金采水瓶水样分析数据（仅核心水化学数据：盐度、溶解氧及营养盐）。随数据集附带一份详细数据报告，其中包含数据说明与重要的质量控制信息。