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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10508 - Physical geography

Result continuities

  • Project

  • 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

  • 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