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<p>Regional chronologies of landslide movements are a powerful tool for determining landslide hazard or analyzing potential triggers. This study has compiled a regional chronology of landslide reactivations through tree-ring dating of 12 landslides using data from 366 disturbed common spruce (<i>Picea abies</i> (L.) Karst.) individuals and three other sub-regional landslide chronologies from the study region. The study area is the eastern margin of the Bohemian Cretaceous Basin, a landslide-prone area in Central Europe. The dating detected 20 landslide reactivations in 16 different event years during the last ca 70&#xa0;years. The frequency of identified growth disturbances and their structure, including their contribution to the reconstructed landslide events, clearly indicates limited slide activity and significant creep activity. Comparing the timing of slide events within the constructed sub-chronology indicates limited synchronicity of these events; however, comparison with other slide event chronologies suggests this synchronicity has increased significantly.</p>

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Regional dendrochronology of slope movements in the Bohemian Cretaceous Basin, one of Central European landslide-prone areas

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Karel Šilhán,
  • Michal Kozák

摘要

Regional chronologies of landslide movements are a powerful tool for determining landslide hazard or analyzing potential triggers. This study has compiled a regional chronology of landslide reactivations through tree-ring dating of 12 landslides using data from 366 disturbed common spruce (Picea abies (L.) Karst.) individuals and three other sub-regional landslide chronologies from the study region. The study area is the eastern margin of the Bohemian Cretaceous Basin, a landslide-prone area in Central Europe. The dating detected 20 landslide reactivations in 16 different event years during the last ca 70 years. The frequency of identified growth disturbances and their structure, including their contribution to the reconstructed landslide events, clearly indicates limited slide activity and significant creep activity. Comparing the timing of slide events within the constructed sub-chronology indicates limited synchronicity of these events; however, comparison with other slide event chronologies suggests this synchronicity has increased significantly.