IODP Expedition 349 Core orientation

Core orientation data were measured downhole during advanced piston corer (APC) coring, either by Minex FlexIT or Icefield MI-5 core orientation tool. These tools measure magnetic strength and orientation, 3-axis accelerometer data, and tool temperature data.取芯定向数据在先进活塞取芯器（advanced piston corer, APC）取芯作业期间通过井下测量方式获取，所用测量工具为Minex FlexIT或Icefield MI-5型取芯定向工具。此类工具可测量磁场强度与方位、三轴加速度计数据以及工具温度数据。