Videos of Basal Ice in Boreholes on the Kamb Ice Stream in West Antarctica

This data set is a collection of video data of basal ice taken in a borehole on the Kamb Ice Stream in West Antarctica. Ice streams are an expression of the inherent instability of the West Antarctic Ice Sheet, and their behavior is a key control on the overall ice-sheet mass balance. Understanding the response of the ice sheet in a warming climate requires a thorough understanding of the internal dynamics of ice streams, in addition to the relevant ice-atmosphere and ice-ocean interactions in the region. The basal environment of the ice streams and of many glaciers is a key scientific interest, including conditions, mainly basal sliding, that lead to fast flow of the ice. The purpose of this data set is to present a review of the full range of original video recordings from the basal ice of the Kamb Ice Stream. Direct observations at the ice-stream bed are a crucial complement to modeling efforts predicting future scenarios in a warming climate.

本数据集收录了采集于西南极洲坎伯冰流（Kamb Ice Stream）某钻孔内的基底冰（basal ice）视频数据。冰流是西南极冰盖（West Antarctic Ice Sheet）固有不稳定性的直观表现，其运动特征是调控冰盖整体物质平衡的关键因素。要厘清气候变暖背景下冰盖的响应机制，除需掌握该区域内冰-大气、冰-海洋的相互作用过程外，还需深入解析冰流的内部动力学特征。冰流与多数冰川的基底环境是当前科研的核心关切方向，其中主导冰体快速流动的基底滑动（basal sliding）等相关条件尤为重要。本数据集旨在完整呈现坎伯冰流基底冰的全部原始视频观测资料。对冰流床体的直接观测，是气候变暖背景下未来情景预测模型研究的重要补充。