Weather, Firn Core, and Ground-penetrating radar data from southern Wilkins and George VI ice shelves, 2018-2019

Data were collected from two sites, one on the southern Wilkins and another on the southern George VI ice shelves. Both sites were investigated as potential sites of perennial firn aquifers; in the case of the southern Wilkins, an extensive firn aquifer was found (Montgomery et al., 2020). Data sources come from two early-model AMIGOS stations (Scambos et al., 2013), ice cores that were collected by hot-ring coring (Montgomery et al., 2020), and ground-penetrating radar profiles. Thermistor data from several depths within the firn core boreholes, transmitted by the AMIGOS stations, show the progression of the seasonal variations in firn temperature at the sites. Radar data show the depth of the firn aquifer (or, its absence at George VI site), and some drainage effects at a nearby rift at the Wilkins site.

本数据集的数据采集自两处冰架站点，分别位于威尔金斯冰架（Wilkins）南部区域与乔治六世冰架（George VI）南部区域。两处站点均被作为多年生粒雪含水层（perennial firn aquifer）的潜在发育点位开展调研；其中威尔金斯冰架南部点位发现了大规模分布的粒雪含水层（Montgomery等，2020）。本数据集的数据来源包括两台早期型号的AMIGOS观测站（Scambos等，2013）、通过热环取芯技术采集的冰芯（Montgomery等，2020），以及探地雷达剖面数据。AMIGOS观测站传输得到的冰芯钻孔内多深度热敏电阻数据，清晰呈现了两处站点粒雪温度的季节性变化过程。探地雷达数据则揭示了粒雪含水层的埋藏深度（乔治六世冰架站点未发现该含水层），以及威尔金斯冰架附近一处裂谷区域存在的部分排水效应。