IODP Expedition 396 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.本实验采用热针法测定样品导热系数，使用TeKa Berlin TK-04型导热系数仪，可根据样品类型选用两种探头配置：全空间针状探头配置适用于软质/饱和沉积物，半空间针状探头配置适用于硬质材料。测试流程为向样品施加热源后，等待系统达到热平衡状态；通过对加热与平衡过程的曲线进行约简处理，即可推导得到样品的导热系数数值。若用户需进行离线处理或实验后再分析，可留存原始测试数据。