Ice thickness along 505 km traverse route from JASE Meeting Point to Dome Fuji, Antarctica, based on JASE ground-based radar surveys

This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along traverse route from the JASE Meeting point to Dome Fuji, the second highest dome in East Antarctica,. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). JARE used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 500 ns. Position of sites is accurate (~20 m) using continuous GPS measurements. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. Later, based on validation by Tsutaki et al. (2021), a correction (+37 m) was applied to all the data. Thickness data with a number "-9999" means that bed echo could not be identified in the A-scope, which means that ice is thicker than our detection limit (from 2900 m to 3500 m depending on locations).本数据集收录了沿JASE会议点至富士冰穹（Dome Fuji，南极东部第二高冰穹）的考察路线开展的地面无线电回声测深（radio echo sounding）实验所获取的冰厚实测数据。该数据来源于日瑞联合JASE考察项目，由日本国立极地研究所（NIPR，第48、49次日本南极考察队（JARE48、JARE49））与瑞典斯德哥尔摩大学共同完成考察与数据采集。本次联合考察的项目负责人为日本国立极地研究所的藤田修司（Shuji Fujita）与瑞典斯德哥尔摩大学的Per Holmlund。本次考察采用脉冲调制甚高频（VHF）冰厚测深雷达，其峰值发射功率为1 kW，中心频率为179 MHz，发射脉冲宽度为500 ns。考察点位通过连续GPS测量获取坐标，定位精度约为20米。该数据集的原始研究成果发表于Fujita等人（2011）与Fujita等人（2012）的两篇学术论文中。后续经Tsutaki等人（2021）验证后，对所有冰厚数据施加了+37米的校正量。数据集中标记为"-9999"的冰厚值，表示在A型显示器（A-scope）中未能识别出冰底反射回波，即对应点位的冰厚超出了本次探测极限（依点位不同，探测范围为2900米至3500米）。