TY - Data T1 - Ningchanhe River Glacier No. 1 thickness data set in 2004 A1 - Cao Bo A1 - Wang jie A1 - Cui hang DO - 10.12072/ncdc.DIMaC.db0005.2020 PY - 2020 DA - 2020-12-14 PB - National Cryosphere Desert Data Center AB - This data set is aimed at Lenglongling area, mainly ningtiaohe Glacier No.1. The sub ice terrain data set includes the serial number, longitude, latitude and thickness of control points. The data set contains 565 records. GPR ground penetrating radar (GPR) is mainly used to select a suitable cross-section on the glacier surface, and the glacier thickness data at this cross-section position is obtained by actual measurement. The data set is only for the glacier thickness in 2014, so it is not supplemented and improved, and the protocol is used for sharing. The data set contains four fields: serial number, longitude (unit: Degree (°)), latitude (unit: Degree (°)) and elevation (unit: meter (m), that is, glacier thickness of the current year). The data set is mainly the measured data in August 2014. The spatial datum is WGS84 / EGM96. Before using GPR, the propagation velocity of radar wave velocity in glacier ice is measured, and the relevant parameters of GPR are modified to ensure the most accurate thickness data of corresponding glacier. DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/2bf2ccdf-abee-4ed0-9eea-25340c0d62a2 ER -