What question did this study set out to answer?

The research aims to analyze relative morphometric changes in a gully system caused by the 2024 DANA event.

March 3, 2026

Assessing Relative Gully Morphometric Change After Extreme Rainfall Events: A UAV- Based GIS Framework Applied to the 2024 DANA in Southern Spain

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Investigates gully changes after the 2024 DANA event in southern Spain, suggesting a framework for effective climate adaptation.

The research aims to analyze relative morphometric changes in a gully system caused by the 2024 DANA event.
Conducted UAV-based photogrammetric surveys before and after the DANA event
Generated high-resolution Digital Elevation Models (DEMs)
Applied structure-from-motion workflow and vegetation filtering techniques
Extracted 13 geomorphometric variables using SAGA GIS
Employed Principal Component Analysis (PCA) to analyze terrain variables
Observations showed substantial topographic reorganization after the DANA event
Notable changes included enhanced gully incision and shifts in slope and curvature patterns
PCA identified key variables affecting gully morphology
Indicated shifts in terrain organization due to runoff and sediment transport

Comino et al. (2026) studied this question.

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