Environmental data associated with sea ice cores collected during SIPEX and SIPEX II

Zooplankton were collected during the winter-spring transition during two cruises of the Aurora Australis: SIPEX in 2007 and SIPEX II in 2012. As part of the collections sea ice cores were collected to describe the ice habitat during the period of zooplankton collections. Ice cores were taken with a 20 cm diameter SIPRE corer and sectioned in the field with an ice core. Temperature was measured in the section using a spike thermometer and slivers of each section were melted without filtered water to record salinity. The remainders of each section were melted at 4oC in filtered seawater and the melted water was used to measure chlorophyll a concentration, and meiofauna species and abundance.

本数据集的浮游动物（zooplankton）样品采集工作依托南极光号（Aurora Australis）科考船的两次航次完成，分别为2007年的海冰物理实验（SIPEX）航次与2012年的海冰物理实验II（SIPEX II）航次，采样时段为冬春过渡期。作为采样工作的组成部分，研究人员同步采集海冰岩芯以表征浮游动物采样期间的海冰生境。海冰岩芯采用直径20 cm的SIPRE型冰芯钻（SIPRE corer）采集，并在野外完成分样；使用尖头温度计（spike thermometer）测量各冰段的温度，将各冰段的碎样置于未过滤水中融化以测定盐度。剩余冰段样品置于4℃的过滤海水中融化，所得融水用于测定叶绿素a（chlorophyll a）浓度以及小型底栖动物（meiofauna）的物种组成与丰度。