Large wood potential, piece characteristics, and flood effects in Swiss mountain streams
Autor: | Peter Waldner, Dieter Rickenmann, Christian Rickli, Nicolas Steeb, Alexandre Badoux |
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Rok vydání: | 2018 |
Předmět: |
Hydrology
Atmospheric Science 010504 meteorology & atmospheric sciences Flood myth 0208 environmental biotechnology Forest management Dead wood 02 engineering and technology STREAMS Mass wasting Channel width 01 natural sciences 020801 environmental engineering Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Environmental science Length distribution 0105 earth and related environmental sciences General Environmental Science |
Zdroj: | Physical Geography. :1-23 |
ISSN: | 1930-0557 0272-3646 |
Popis: | We present results of two studies on the (1) potential wood load in steep headwater streams and (2) properties of large wood (LW) transported in mountain rivers during the large August 2005 flood event in Switzerland. Ten headwater reaches of 1000 m length were surveyed in different regions of Switzerland. The potential wood load was estimated for in-channel deadwood, and possible driving factors were explored. Correlations were found with dead wood volume on hillslopes and mean channel width. We established size distributions of LW pieces and identified probable recruitment processes. Four reaches were resurveyed after an exceptionally severe flood in August 2005, showing limited LW transport in channels but considerable wood input by mass wasting processes. In addition, characteristics of deposits of LW along mountain rivers affected by the 2005 flood were investigated. Diameter and length distribution of transported and deposited pieces were comparable to those of LW from steep headwater stream... |
Databáze: | OpenAIRE |
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