Characteristics of large wood in a headwater channel after an extraordinary event: The roles of transport agents and check dams
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901U41" target="_blank" >RIV/61988987:17310/18:A1901U41 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.catena.2018.03.010" target="_blank" >http://dx.doi.org/10.1016/j.catena.2018.03.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.catena.2018.03.010" target="_blank" >10.1016/j.catena.2018.03.010</a>
Alternative languages
Result language
angličtina
Original language name
Characteristics of large wood in a headwater channel after an extraordinary event: The roles of transport agents and check dams
Original language description
High-magnitude hydrogeomorphic events in steep streams (e.g., debris flows and debris floods) are capable of transporting considerable quantities of bed material, including large wood, although wood pieces that are longer than the channel width are often perceived as relatively stable elements in narrow headwater channels. We investigated present large wood distribution along 1.7?km of a steep headwater channel (the Klepáčský Stream; Eastern Sudetes; NE Czech Republic) surrounded by managed forests and engineered by twelve check dams (presently at various stages of destruction). The total wood volume was measured at 123.0?m3, including wood deposited on adjacent terraces by a high-magnitude hydrogeomorphic event in 2010 representing a ca. 20-30?year recurrence interval. Approximately a half of the total wood volume (58%) was stored in large jams (?10 large wood pieces) that originated during that event. We observed reach controls (based on transport agents and valley morphology) and local controls (represented by individual check dams) of LW depositional patterns. The uppermost debris flow-affected reach produced high volumes of mobilised wood, including many pieces that were two-to-three times longer than the local active channel width; significantly shorter and thinner pieces were found within large jams in downstream reaches void of debris-flow processes. We also documented that this high-magnitude event was responsible for the notable out-of-channel storage of large wood, which decreases the volume of wood that might be transported by a future event. In addition, 30.5?m3 of large wood, that is ~one-quarter of the total volume measured along the stream, was deposited in relation to twelve damaged check dams despite their lowered trapping efficiency.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10508 - Physical geography
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CATENA
ISSN
0341-8162
e-ISSN
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Volume of the periodical
165
Issue of the periodical within the volume
červen
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
537-550
UT code for WoS article
000430994900053
EID of the result in the Scopus database
2-s2.0-85043490961