Internal reflecting horizon 9 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2016年至2018年间在南极东高原穹顶C（Dome C）区域开展的冰穿透雷达勘测中人工追踪得到的雷达内部反射层（Internal Reflecting Horizons，IRHs）。本数据集关联Chung等人（2023）的发表成果。数据采集于2016-2017和2017-2018两个南极野外季，使用英国南极调查局（British Antarctic Survey，BAS）的雪橇搭载深穿透无线电回声测深仪（DEep LOoking Radio Echo Sounder，DELORES）完成。此次勘测覆盖了穹顶C周边两处被选为"超越EPICA最古老冰芯钻探项目"潜在钻探点位的区域——小穹顶C（Little Dome C，LDC）与北区块（North Patch，NP）。其中LDC区域布设了116条雷达测线组成的密集网格，重点关注区域的采集密度更高；NP区域布设了21条雷达测线组成的网格，覆盖面积约5×5平方千米。本雷达数据集中的20个内部反射层与冰-床界面均采用斯伦贝谢（Schlumberger）Petrel油气勘探开发软件平台进行人工追踪。每个内部反射层对应一个.txt格式文件，以制表符分隔存储，包含双向走时与深度数据。数据转换采用0.1685米/微秒的电磁波速，并施加了10米的雪层校正。20个内部反射层数据的沿轨分辨率为5米。