IODP Expedition 390C Thermal conductivity

Thermal conductivity was measured using the heated needle method in either full-space needle configuration (soft/saturated sediments) or half-space needle configuration (harder materials) of a TeKa Berlin TK-04 thermal conductivity meter. Heat is applied to the sample and then thermal equilibrium is sought. The heating and equilibration curve is reduced to derive the thermal conductivity value. Raw data are stored if a user wishes to do off-line or postexpedition reduction.本数据集的热导率（thermal conductivity）测试采用热针法（heated needle method）完成，所用仪器为TeKa Berlin TK-04型热导率仪（TeKa Berlin TK-04 thermal conductivity meter）。针对松软/饱和沉积物，采用该仪器的全空间针状探头配置（full-space needle configuration）；针对硬质材料，则使用其半空间针状探头配置（half-space needle configuration）。测试流程为：先向样品施加热量，待系统达到热平衡（thermal equilibrium）后，通过对加热平衡曲线（heating and equilibration curve）进行数据缩减处理以推导热导率数值。若用户需开展离线或野外考察后数据处理，可留存原始数据（raw data）。