There is a newer version of the record available.

Published 2024 | Version v2
Dataset Open

Supplementary dataset for Cai et al., (2024): Characterizing the Kinematics of Active Rock Glaciers in Daxue Shan, Southeastern Tibetan Plateau, Using SAR Interferometry and Generalized Boosted Modeling

  • 1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
  • 2. State-Province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu, Sichuan, China

Description

This dataset encompasses the annual mean creep velocities of rock glaciers in Daxue Shan, located in the Southeastern Tibetan Plateau, between 2019 and 2020. These velocities have been meticulously estimated by integrating InSAR observations from both ascending and descending tracks with the Surface Parallel Flow (SPF) model. Initially, we utilized the Small Baseline Subset (SBAS) InSAR technique to map the movement of rock glaciers between January 2019 and December 2020. This was achieved by analyzing Sentinel-1A SAR imagery from both ascending and descending orbits. Following this, we merged the Line of Sight (LOS) measurements from the two tracks with the enhancements of the SPF model, which enabled us to calculate the three-dimensional creeping velocities of the rock glaciers with higher precision. In the final step, we projected the calculated 3D displacement vectors in a direction that is parallel to the slope of the terrain. This was accomplished through a process of vector addition, ensuring an accurate representation of the rock glaciers' movements.

Notes

Data description
ID: The reference number of rock glacier (see the KMZ file)
Longitude & Latitude: Location of the central point of each rock glacier  
Annual velocity: The annual mean creep velocity for each rock glacier

Files

Files (1.5 MB)