South Pole Ice Core (SPICEcore) SPC14 Core Quality Versus Depth

Qualitative assessment of ice-core quality versus depth for the South Pole ice core SPC14. The depths and core quality ratings presented here are from the field observations made at South Pole, Antarctica, during the course of the drilling of the ice core and also from the lab observations at the NSF-Ice Core Facility in Lakewood, Colorado. Depths are in meters. Core quality ratings were defined are as follows. Excellent: 0–1 breaks/no fractures; Very Good: 0–2 breaks/90% no fractures; Good: 0–3 breaks/50% no fractures; Fair: >10 cm without fractures; Poor: >10 cm without through fractures; Very Poor: <10 cm without through fractures.南极冰芯SPC14的冰芯质量与深度定性评估。 本次所呈现的冰芯深度与质量评级数据，来源于南极极点现场钻探该冰芯过程中的实地观测，以及科罗拉多州莱克伍德市美国国家科学基金会冰芯实验室（NSF-Ice Core Facility）的室内分析结果。 深度单位为米。 冰芯质量评级定义如下：优级：断裂数量0~1处，无断裂段占比100%；优良级：断裂数量0~2处，无断裂段占比达90%；合格级：断裂数量0~3处，无断裂段占比达50%；一般级：连续无断裂段长度大于10厘米；较差级：连续无贯穿断裂段长度大于10厘米；极差级：连续无贯穿断裂段长度小于10厘米。