Physical ice core properties from ice stations during POLARSTERN cruise PS118

For physical analyses, a total of 21 texture ice cores with a diameter of 0.09 m were taken from 14 of the 15 ice stations during the PS118 expedition, with 5 cores covering the entire ice column and the remaining cores comprise only the top sections measuring at least 50 cm. In the cold laboratory on board, detailed analyses of the ice texture were performed on vertical thick sections between cross polarizers to determine ice crystal properties. Based on the ice texture, the ice cores were sliced into sections up to 15 cm and melted for the following analysis of vertical salt (on board) and isotope profiles (in laboratory back home). At level, virtually representative locations of each floe, physical and biogeochemical ice properties为开展物理特性分析，在PS118科考航次期间，研究人员从15个冰站中的14个采集了总计21根直径0.09米的纹理冰芯（texture ice cores）；其中5根冰芯覆盖完整冰柱，剩余冰芯仅包含厚度不小于50厘米的顶部冰段。 在科考船搭载的低温实验室中，研究人员借助正交偏振片（cross polarizers）对垂直厚切片开展冰纹理细节分析，以测定冰晶各项属性。 基于冰纹理分析结果，研究人员将冰芯切割为最大厚度15厘米的切片并融化，用于后续开展船上原位盐度分析与归国实验室中的同位素剖面（isotope profiles）分析。 针对各浮冰的典型代表性点位，冰体物理与生物地球化学特性