Internal reflecting horizon 8 in the Dome C region of Antarctica@en

This dataset consists of radar IRHs (internal reflecting horizons) which were traced across ice-penetrating radar surveys conducted between 2016 and 2018 over the Dome C region of the East Antarctic Plateau. The dataset is associated with the publication Chung et al. (2023). The data was collected during two radar surveys conducted in the Antarctic field seasons of 2016-17 and 2017-18 using the sledge-borne DEep LOoking Radio Echo Sounder (DELORES) from the British Antarctic Survey (BAS). The surveys covered two areas around Dome C which were identified as potential drill sites for the Beyond EPICA Oldest Ice drilling project - Little Dome C (LDC) and North Patch (NP). The LDC area is covered by a dense network of 116 radar transects, mostly organised as a grid, with denser data acquisition in areas of particular interest. At NP a grid of 21 radar transects were collected, covering an area of approximately 5×5 km^2. In this radar dataset, 20 IRHs and the ice-bed interface were manually traced, using the Petrel E&P Software Platform by Schlumberger. A single file for each IRH is provided in a .txt file, tab separated format with both two-way travel time and depth. The conversion done using c = 0.1685 m/us and firn correction of 10 m. The 20 IRHs are provided at 5 m along-track resolution.本数据集包含雷达内部反射层（internal reflecting horizons, IRHs），这些反射层是通过2016至2018年间在东南极高原 Dome C 区域开展的冰穿透雷达测量工作中追踪得到的。本数据集关联Chung等人（2023年）发表的研究成果。数据采集自2016-17和2017-18两个南极野外季的两次雷达测量，所用设备为英国南极调查局（British Antarctic Survey, BAS）研发的雪橇搭载式深层探测雷达回声测深仪（DEep LOoking Radio Echo Sounder, DELORES）。本次测量覆盖了Dome C周边两处被认定为Beyond EPICA古冰芯钻探项目潜在钻探点位的区域：小Dome C（Little Dome C, LDC）与北块区（North Patch, NP）。LDC区域布设了由116条雷达测线组成的密集观测网络，多数呈网格状分布，在重点关注区域采用了更高密度的数据采集方案。NP区域则布设了由21条雷达测线组成的网格测网，覆盖面积约为5×5平方千米。本雷达数据集中的20个IRHs以及冰-床界面均通过斯伦贝谢（Schlumberger）的Petrel E&P软件平台进行手动追踪标注。每个IRH对应一个文本文件（.txt格式），采用制表符分隔格式，包含双向旅行时与深度两类数据。数据转换采用声速c=0.1685米/微秒，并施加了10米的粒雪层校正。20个IRHs数据均采用沿轨向5米的分辨率进行输出。