Evaluation of meteorological controls of reconstructed rockfall activity in the Czech Flysch Carpathians
| Autor: | Petr Dobrovolný, Lucie Kašičková, Marek Václavek, Ondřej Turský, Radim Tolasz, Rudolf Brázdil, Karel Šilhán, Tomáš Pánek |
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| Rok vydání: | 2011 |
| Předmět: |
geography
Flysch geography.geographical_feature_category 010504 meteorology & atmospheric sciences Geography Planning and Development Landslide 15. Life on land 010502 geochemistry & geophysics 01 natural sciences Rockfall 13. Climate action Earth and Planetary Sciences (miscellaneous) Precipitation Geomorphology Geology 0105 earth and related environmental sciences Earth-Surface Processes Chronology |
| Zdroj: | Earth Surface Processes and Landforms. 36:1898-1909 |
| ISSN: | 0197-9337 |
| Popis: | The spatio-temporal characteristics of rockfall activity were studied at four localities representative of old landslides in the highest part of the Czech Flysch Carpathians (Moravskoslezske Beskydy Mountains). Historical activity, chronology, and spatial context of rockfall activity were reconstructed using dendrogeomorphic techniques and rockfall rate index (RR). A total of 1132 increment cores from 283 trees growing in the rockfall transport and accumulation zones enabled the dating of 989 rockfall events. Reconstruction of a 78-year-long RR chronology suggests similar rockfall histories and trends at all study sites, indicating the existence of major common factors driving rockfall dynamics in the region. Temporal analysis and correlation of the RR series obtained with monthly mean temperatures, numbers of days with temperature transitions through 0 deg C and monthly precipitation totals show that meteorological characteristics have evident but variable influence on rockfall activity. |
| Databáze: | OpenAIRE |
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