Snow density from shallow cores in western Dronning Maud Land, Antarctica , acquired during the Swedish Antarctic Expedition 2021/22@en

The data were acquired during the austral summer of 2021/22 as part of the Swedish Antarctic Program (SWEDARP) expedition DML21/22. During the expedition we drilled snow cores with a PICO auger at 23 locations around the research stations of Wasa (Sweden) and Aboa (Finland). 2 cores were acquired on the Riiser-Larsen ice shelf. The cores were between approximately 3 and 6 meters deep. Cores were sampled in 5-20 cm segments, mostly, and the segments were bagged and weighed with a precision spring balance. The spring balance was tested for precision and accuracy at the start of the field season. We collected the data as part of an investigation into synthetic aperture radar penetration and scattering.本数据集采集于2021/22年度南极夏季，隶属于瑞典南极计划（Swedish Antarctic Program, SWEDARP）的DML21/22科考项目。本次科考中，研究团队在瑞典瓦萨站（Wasa）与芬兰阿博阿站（Aboa）周边的23个点位使用PICO型钻孔器（PICO auger）钻取雪芯，其中2根雪芯采自里瑟-拉森冰架（Riiser-Larsen Ice Shelf）。所有雪芯的深度约为3至6米，绝大多数被切割为5至20厘米的分段，随后将分段装入样品袋并使用精密弹簧秤进行称重。本次野外考察启动前，已针对该弹簧秤的精度与准确度完成校准测试。本数据集的采集工作服务于合成孔径雷达（synthetic aperture radar, SAR）穿透特性与散射特性的相关研究。