EGU General Assembly 2007
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  Information - NH10.02 Tree-ring reconstructions in natural hazards research

Event Information
In natural hazard research, detailed knowledge on what was going on in the past may considerably help to understand current as well as future processes. In archives, historical records are only rarely available and difficult to obtain for single natural hazard events or event-prone areas. Similarly, observation-based data gathered in the field consider present activity and normally do not extend for more than a few years, thus making it difficult to scale-up results either spatially or temporally. In forests and along their edges, the analysis of tree rings can provide annually-resolved data on past geomorphic processes that span several centuries, thus allowing assessment and dating of events prior to instrumental and historical records. It is the overall goal of this session to illustrate recent progress, possibilities and limitations of tree-ring studies in the field of natural hazard research (flooding, debris flows, rockfall, rockslides, landslides, snow avalanches, erosion). Contribution should include results from fundamental and applied research illustrating how dendrogeomorphology can provide insights on frequencies (how often?), volumes (how much?), spatial distributions (where?) or even the seasonality (when?) of past events. Further, contributions should also illustrate to what degree tree-ring studies can help the understanding of processes, assessment of hazards and risks as well as the calibration of model output data.

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