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13-17 May 2013
Tucson, Arizona
US/Arizona timezone
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Application of eccentric growth of trees as a tool for landslide analyses (the example of Picea abies Karst. in the Carpathian and Sudeten Mountains - Central Europe)

Presented by Ms. Małgorzata WISTUBA on 15 May 2013 from 18:00 to 21:00
Type: Poster Presentation
Board #: 63

Content

A method based on a feature of wood anatomy: tree-ring eccentricity was developed to analyze the spatial and temporal variability of landslide activity. The degree of eccentricity is used as an indicator of the intensity of the mechanical stress affecting a stem in a certain year. The uneven distribution of strains in a stem of Norway spruce tilted by ground instability causes more intensive growth of the compressed, lower part of the stem. Field studies and laboratory experiments proved that eccentricity starts to develop directly after the tilting/landslide event. Thanks to the application of reference results (from stable slopes) as thresholds in dating, an objective mathematical method for detecting landslide activity was developed. The method was used for seven landslide slopes with different sizes and geological settings, located in the Carpathians and Sudetes (central Europe: Poland, Czech Republic). Achieved results suggest that eccentricity can gain a practical application in detecting initial landslide activity and predicting future hazards.

Place

Location: DoubleTree
Room: Salon E

Primary authors

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Co-authors

  • Prof. Ireneusz MALIK Faculty of Earth Sciences, University of Silesia in Katowice, Poland
  • Dr. Holger GäRTNER Swiss Federal Research Institute WSL, Landscape Dynamics, Dendroecology, Switzerland
  • Dr. Paweł KOJS Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Poland
  • Prof. Wiesław WłOCH Department of Biosystematics, University of Opole, Poland
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