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Application of Geomorphons and TPI in the Geomorphometric Study of Glacial Curvilineations in the Drawsko Lakeland (NW Poland)

Author

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  • Lipka Ewelina

    (Institute of Geoecology and Geoinformation, Adam Mickiewicz University in Poznań, Poznań, Poland)

  • Majewski Mikołaj

    (Institute of Geoecology and Geoinformation, Adam Mickiewicz University in Poznań, Poznań, Poland)

  • Paluszkiewicz Renata

    (Institute of Geoecology and Geoinformation, Adam Mickiewicz University in Poznań, Poznań, Poland)

Abstract

This study compares two automated geomorphometric methods – geomorphons and the Topographic Position Index (TPI) – for detecting glacial curvilineations (GCLs) within the Komorze tunnel valley, NW Poland. Using LiDAR-derived digital elevation model (DEM), outputs from each method were evaluated against a manually refined reference. Geomorphon-based classifications, particularly at a flatness threshold (FT) of 3, most closely matched the manual interpretation, preserving ridge structure and spatial coherence. TPI methods often over-fragment the ridges at smaller neighbourhood sizes. These results suggest that while manual delineation remains most reliable, automated tools such as geomorphons can meaningfully support large-scale GCL mapping with careful parameterisation.

Suggested Citation

  • Lipka Ewelina & Majewski Mikołaj & Paluszkiewicz Renata, 2025. "Application of Geomorphons and TPI in the Geomorphometric Study of Glacial Curvilineations in the Drawsko Lakeland (NW Poland)," Quaestiones Geographicae, Sciendo, vol. 44(3), pages 143-158.
    • Handle: RePEc:vrs:quageo:v:44:y:2025:i:3:p:143-158:n:1007
    DOI: 10.14746/quageo-2025-0028
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