Table 2: Firn temperature, ram resistance, mass balance and submergence velo city measurements on Colle Gnifetti

Distributional patterns of glaciological parameters at the Colle Gnifetti core drilling site are described and their interrelationships are brietly discussed. Observations within a stake network established in 1980 furnish information about snow accumulation (short term balance), submergence velocity of ice tlow (long term balance), ram hardness (melt layer stratigraphy), and firn temperature. In addition, a numerical model was used to estimate local variations of available radiant energy.
Melt layer formation is considerably more intensive on the south facing parts of the firn saddie where incoming radiation is high. These melt layers seem to effectively protect some of the fallen snow from wind erosion. As a result, balance ist up to one order of magnitude larger on south facing slopes. Heat applied to the surface is therefore positively correlated with balance, whereas the relation between solar radiation and firn temperature is less dear. Distributional patterns of submergence velocity confirm that the observed spatial variability of surface balance is representative for longer time periods and greatly intluences the time scale and the stratigraphy of firn and ice cores from Colle Gnifetti.

本数据集对科尔尼夫耶蒂（Colle Gnifetti）冰芯钻探点位处的冰川学参数分布特征进行了阐述，并简要探讨了各参数间的相互关联。1980年布设的测杆网观测数据，提供了积雪积累量（短期物质平衡）、冰流潜没速度（长期物质平衡）、夯入硬度（融层地层特征）以及粒雪温度的相关信息。此外，本研究借助数值模型估算了有效辐射能的局地变化特征。
在入射辐射较强的粒雪鞍部南向区域，融层的形成强度显著更高。此类融层可有效保护部分积雪免受风蚀。因此，南向坡的物质平衡量最高可达一个数量级以上。由此可见，地表接收的热量与物质平衡呈正相关，而太阳辐射与粒雪温度之间的关联则尚不明确。潜没速度的分布特征证实，观测到的地表物质平衡空间变异性可代表更长时间尺度的过程，且其对科尔尼夫耶蒂粒雪与冰芯的时间尺度及地层序列具有显著影响。