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Dendrochronological dating as the basis for developing a landslide hazard map – An example from the Western Carpathians, Poland

Katarzyna Łuszczyńska
Katarzyna Łuszczyńska
, 
Małgorzata Wistuba
Małgorzata Wistuba
, 
Ireneusz Malik
Ireneusz Malik
, 
Marek Krąpiec
Marek Krąpiec
 and 
Bartłomiej Szypuła
Bartłomiej Szypuła
   | Aug 21, 2018
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Article Category: Regular Articles
Published Online: Aug 21, 2018
Page range: 173 - 184
Received: May 07, 2018
Accepted: Jun 04, 2018
DOI: https://doi.org/10.1515/geochr-2015-0093
Keywords
© 2018 K. Łuszczyńska. published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

The location of the study area in Central Europe, Western Carpathians (A) and the location of sampling sites for a dendrochronological study in the massif of Sucha Mt, in the Beskid Żywiecki Mts (B).
The location of the study area in Central Europe, Western Carpathians (A) and the location of sampling sites for a dendrochronological study in the massif of Sucha Mt, in the Beskid Żywiecki Mts (B).

Fig. 2

An example of dating landslide events from ring widths into (A) eccentricity, (B) eccentricity index [%] and (C) its yearly variation [%]:U — tree-ring widths in the upslope part of the stem [mm];D — tree-ring widths in the downslope part of the stem [mm];E — the eccentricity of the tree-ring [mm];Ei — the eccentricity index of the tree-ring [%];vEi — the yearly variation in the eccentricity index [%];x — year (annual tree ring).
An example of dating landslide events from ring widths into (A) eccentricity, (B) eccentricity index [%] and (C) its yearly variation [%]:U — tree-ring widths in the upslope part of the stem [mm];D — tree-ring widths in the downslope part of the stem [mm];E — the eccentricity of the tree-ring [mm];Ei — the eccentricity index of the tree-ring [%];vEi — the yearly variation in the eccentricity index [%];x — year (annual tree ring).

Fig. 3

The results of interpolation for all points (A, C, E), and without 5 control points (B, D, F). Interpolation methods: the Radial-Basis Function (A, B), Spline (C, D), and Topo to Raster (E, F).
The results of interpolation for all points (A, C, E), and without 5 control points (B, D, F). Interpolation methods: the Radial-Basis Function (A, B), Spline (C, D), and Topo to Raster (E, F).

Fig. 4

The barriers applied in the process of dendrochronological-data interpolation in the massif of Sucha Mt, Western Carpathians, Poland: (A) watercourses, (B) the most-important ridgelines.
The barriers applied in the process of dendrochronological-data interpolation in the massif of Sucha Mt, Western Carpathians, Poland: (A) watercourses, (B) the most-important ridgelines.

Fig. 5

Average frequency of landslide events calculated for each sampling site in the massif of Sucha Mt, Western Carpathians, Poland
Average frequency of landslide events calculated for each sampling site in the massif of Sucha Mt, Western Carpathians, Poland

Fig. 6

A landslide activity map developed on the basis of the selected interpolation method – Spline with barriers (A) and the landslide hazard map for the massif of Sucha Mt, Western Carpathians, Poland (B). Maps of the distribution of landslides were created on the basis of the results obtained from the tree-ring eccentricity analysis.
A landslide activity map developed on the basis of the selected interpolation method – Spline with barriers (A) and the landslide hazard map for the massif of Sucha Mt, Western Carpathians, Poland (B). Maps of the distribution of landslides were created on the basis of the results obtained from the tree-ring eccentricity analysis.

The calculated errors of the interpolation methods. A Root Mean Square Error (RMSE) expresses the differences between original (real) values (2nd column) and the interpolated values (3rd, 5th and 7th columns).

PointsRadial Basis FunctionSplineTopo to Raster
No.Real ValueValueDifferenceValueDifferenceValueDifference
10.651.37+0.721.06+0.411.36+0.71
21.520.95–0.571.12–0.400.91–0.61
31.211.04–0.170.98–0.231.07–0.14
41.381.48+0.102.05+0.671.37–0.01
51.210.50–0.710.30–0.910.63–0.58
MEAN1.191.07–0.131.10–0.091.07–0.13
RMSE––0.53–0.57–0.49
eISSN:
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Language:
English
Publication timeframe:
Volume Open
Journal Subjects:
Geosciences, other
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