TY  - Data
T1  - Scientific Data from Ground-Based Polarimetric Ground-Penetrating Radar Measurements in Yan'an Region
A1  - feng xuan
DO  - 10.12072/ncdc.loess.db7346.2026
PY  - 2026
DA  - 2026-05-21
PB  - National Cryosphere Desert Data Center
AB  - Scientific Data from Ground-Based Polarimetric Ground-Penetrating Radar Measurements in Yan'an Region aim to conduct small-scale, high-precision detection. The GPR system operates at a center frequency of 100 MHz with a sampling time window set to 100 ns. Based on the GPS data recorded in the radar dataset, a survey route map for the ground-based polarimetric GPR was generated, primarily covering a landslide mass where several sinkholes are visible on the surface. For the raw data collected from the HH, HV, and VV polarization channels during the experiment, a data processing workflow was designed, including background removal, gain adjustment, and band-pass filtering. The results show that the ground-reflected energy is strong in the HH and VV channels, while weaker in the HV channel. However, the HV channel exhibits greater penetration capability, enabling detection of deeper subsurface structures with a penetration depth exceeding 10 m. Strong scattering signals in the shallow subsurface correspond to sinkholes near the surface, though their underground extent and structure cannot be determined from surface observations alone. In the GPR profiles, the sinkholes are seen to extend to varying depths and exhibit different structural scales. The depth, scale, and structure of these sinkholes play a critical role in assessing their potential hazards.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/3fad05bd-9dee-41fb-a1bf-49a721fcf3ee
ER  -