<b>Supplementary material for</b><b> </b><b>An Innovative Approach to Evaluate Debris Flow Scale-Activity across Diverse Aridity Zones: Fusion of Image Recognition and Geomorphometric Analysis</b>

The repository contains the result data of the scale-activity compound (SAC) index that assesses the intensity, magnitude, severity, and frequency aspects of debris flows, which is a result of the PCA modeling with methods detailed in the published article. In addition, supplementary materials, including supporting figures, are provided IN Appendix file. The Python code script can be used for PCA analysis based on the extracted model parameters.Further description of the methods and analyses can be found in:Jiang, Z., Wang, J., Zhang, G., Cui, P., Yang, C., Zhang, Y., Zhang, B., Li, C., Wang, H., Liu, J., &amp; Yang, Z. (2025). An innovative approach to evaluate debris flow scale-activity across diverse aridity zones: Fusion of image recognition and geomorphometric analysis. CATENA, 250, 108753. https://doi.org/https://doi.org/10.1016/j.catena.2025.108753 <br><br>