Specific conductivity measured with the dielectric profiling (DEP) technique on the NGRIP1 ice core (down to 1371.69 m depth)

Dielectric Profiling (DEP) of the North Greenland Ice Core Project (NGRIP1) core were recorded in the field during the 1996-1998 field seasons with the DEP device described by Wilhelms et al. (1998). The permittivity and conductivity of DEP data are calculated by their respective densities and conductivities (Wilhelms, 2005). The resolution of DEP data is 5 mm. The DEP was not processed at a consistent temperature due to the varying temperature in the field seasons. For more information on the calibration procedure see Mojtabavi et al, 2020.1996—1998年野外考察季期间，研究人员使用Wilhelms等人（1998）报道的介电剖面分析（Dielectric Profiling，DEP）设备，完成了北格陵兰冰芯计划（North Greenland Ice Core Project，NGRIP1）冰芯的介电剖面分析数据野外采集工作。DEP数据的介电常数与电导率依据各自对应的密度和电导率计算得出（Wilhelms, 2005）。该数据集的空间分辨率为5毫米。由于野外考察季温度存在波动，本次DEP数据未在恒定温度条件下进行处理。有关校准流程的详细信息，可参阅Mojtabavi等人（2020）的研究成果。