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Gewählte Master / Diploma Thesis:

Alexander Meinhard Leitich (2018): Leitfaden zur Erhebung des Geschiebepotentials in Wildbächen.
Master / Diploma Thesis - Institut für Alpine Naturgefahren (IAN), BOKU-Universität für Bodenkultur, pp 124. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
These guidelines show which elements a uniform and standardized outcome of determining bed load potentials in steep mountain torrent catchment areas should include. For the first time such guidelines determine the needed level of differentiation. This manual consists of an office-based part and field work. It is based on existing methods and leaves the expert the freedom of choosing his/her preferred practice. It is meant to assist experts in their actual field work. The office-based part includes: 1. The characterisation of catchment areas 2. Analysis of historical debris flow events 3. Categorization of areas regarding their potential of bed load mobilization in GIS 4. Pre-subdivision of homogenous stretches, application of common empirical formulas, preassessment of the predominant transport type Concluding the office-based part first statements about the bed load potentials can be made. Also, the expected expenditure of field work can be estimated. In the field-based part the method of determining bed load potential is left unspecified due to constant innovation but it defines the content of the results needed. They have to include the following minimum standards: 1. Determination of homogenous stretches based on the actual torrent conditions 2. Assessment of sediment deliveries based on integral catchment area analysis 3. Detailed geological and geomorphological mapping in areas with high bed load potential 4. Creation of a schematic channel system (“Abstrahiertes Gerinnesystem- AGS”) 5. Implementation of the predominant transport type in the schematic channel system (process-routing) 6. Creation of a bed load mass balance 7. Visualization of the bed load charge in a diagram As a conclusion this manual facilitates the determination of bed load potentials in steep mountain torrent catchment areas by using a clearly defined level of differentiation of the results.

Beurteilende(r): Hübl Johannes
1.Mitwirkender: Zangerl Christian

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