1,721,016 research outputs found
Analogia tra i torrenti a morfologia step pool e gli alvei sistemati con opere trasversali
No full textAbundance and morphological effects of large woody debris in forested basins of Southern Andes
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Dimensions of scour holes and effectiveness of grade-control structures in two cobble-gravel bed rivers
Full text linkIl materiale legnoso in alveo nei torrenti alpini: troppo o troppo poco? Evidenze dal bacino dell'Alto Cordevole
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In-channel large woods in two natural forested mountain catchments in Southern Chile: abundance, mobility, flow resistance and hydro-morphological efects analysis.
No full textWood storage in three mountain streams of Southern Andes and its hydro-morphological effects
No full textEl material legnoso en los cauces: importancia, cuantificaciòn y gestiòn-SELF LEARNING DOCUMENT
No full textINCO-CT2004-510739- EPIC FORCE Project
Spatial density and characteristics of woody debris in five mountain rivers of the Dolomites (Italian Alps)
No full textThis research quantifies amounts and characteristics of woody debris in mountain channels of the Alps. All pieces of woody
debris greater than 5cm diameter and 0.3m length have been surveyed along five channels of the Dolomites (Italian Alps) with
channel slopes ranging from 0.04 to 0.26 (basin area 2.2–51km2). During the survey, channels were divided into uniform reaches
and the mean gradient, bankfull width and depth of flow were measured. Overall, 4900 woody debris pieces, single and jamforming,
were measured and classified with respect to several qualitative attributes, such as presence/absence of rootwads,
orientation to flow, and position in the channel. Results show that very large variations in the volume of woody debris per unit area
of the streambed occur even within single streams, and that inputs mainly result from slope instabilities adjacent to the channels.
Amounts of woody debris are low compared to most previous data published from different world regions, but match with other
mountain rivers of the Alps. Debris transport seems to be of minor importance compared to local inputs from the slopes, because
reach characteristics are poorly correlated with the volume of woody debris in a reach. A strong negative correlation is, however,
observed between basin area and average density of woody debris in the five channels, but debris removal in the larger channels
likely affects such a trend. Finally, the frequency of log steps is inversely correlated to drainage area, and positively related to the
density of debris
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