Numerical Modeling of Potential Large Wood Entrainment in
Rivers: Application of Hybrid Modeling in the Inter-Dam Reach
of the Dyje River, Czechia

J 2024

Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia

HLAVŇA, Matej, Zdeněk MÁČKA a Jakub ZÁTHURECKÝ

Základní údaje

Originální název

Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia

Autoři

HLAVŇA, Matej (703 Slovensko, garant, domácí), Zdeněk MÁČKA (203 Česká republika, domácí) a Jakub ZÁTHURECKÝ (703 Slovensko, domácí)

Vydání

Water Resources Research, American Geophysical Union, 2024, 0043-1397

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.400 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1029/2023WR035145

UT WoS

001197389800001

Klíčová slova anglicky

river large wood; wood mobility; numerical modeling; dynamical approach; flood scenario

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 4. 2024 09:50, Mgr. Marie Šípková, DiS.

Anotace

V originále

Mobilization of large wood in river channels during floods represents a hazardous factor, augmenting flood risk and endangering infrastructures such as bridges, weirs, and reservoir dams. A hybrid modeling approach combining numerical models with field-based surveys has been recently used to elucidate the processes of LW entrainment and deposition in rivers. We used two-dimensional hydraulic modeling performed in HEC-RAS to simulate LW entrainment in two valley bottom segments of the Dyje River, Czechia, where LW deposition is a significant hazard to the dam of the downstream Znojmo reservoir. We surveyed all LW pieces in the inundation area of the 2002 extreme (>Q100) flood and simulated their entrainment for eight flood scenarios (1–100-year recurrence interval). We used the equations of Braudrick and Grant (2000, https://doi.org/10.1029/1999WR900290) to calculate the LW entrainment threshold; we introduced coefficient k accounting for the incomplete submersion of LW pieces resting on an inclined surface into the original equations. Four entrainment categories — stable, wetted stable, wetted buoyant, and wetted entrained — were defined, and the proportion of LW pieces in each category was calculated for the flood scenarios. We found marked differences in entrainment categories for respective flood scenarios between the two valley segments. These were attributed to the differences in pieces' dimensions, their spatial distribution within the inundation area, and valley-bottom topography, which affects the hydraulic conditions for a given discharge. The presented approach enables the calculation of the LW quantity potentially mobilized by the flood of a certain magnitude indicating the degree of potential risk for the infrastructures located downstream.

Návaznosti

MUNI/A/1323/2022, interní kód MU

Název: Environmentální a socioekonomické změny v geografickém výzkumu

Investor: Masarykova univerzita, Environmentální a socioekonomické změny v geografickém výzkumu

Citovat

HLAVŇA, Matej, Zdeněk MÁČKA a Jakub ZÁTHURECKÝ. Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia. Water Resources Research. American Geophysical Union, 2024, roč. 60, č. 4, s. 1-20. ISSN 0043-1397. Dostupné z: https://dx.doi.org/10.1029/2023WR035145.

@article{2392820,
   author = {Hlavňa, Matej and Máčka, Zdeněk and Záthurecký, Jakub},
   article_number = {4},
   doi = {http://dx.doi.org/10.1029/2023WR035145},
   keywords = {river large wood; wood mobility; numerical modeling; dynamical approach; flood scenario},
   language = {eng},
   issn = {0043-1397},
   journal = {Water Resources Research},
   title = {Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia},
   url = {https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023WR035145},
   volume = {60},
   year = {2024}
}

TY  - JOUR
ID  - 2392820
AU  - Hlavňa, Matej - Máčka, Zdeněk - Záthurecký, Jakub
PY  - 2024
TI  - Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia
JF  - Water Resources Research
VL  - 60
IS  - 4
SP  - 1-20
EP  - 1-20
PB  - American Geophysical Union
SN  - 00431397
KW  - river large wood
KW  - wood mobility
KW  - numerical modeling
KW  - dynamical approach
KW  - flood scenario
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023WR035145
N2  - Mobilization of large wood in river channels during floods represents a hazardous factor, augmenting flood risk and endangering infrastructures such as bridges, weirs, and reservoir dams. A hybrid modeling approach combining numerical models with field-based surveys has been recently used to elucidate the processes of LW entrainment and deposition in rivers. We used two-dimensional hydraulic modeling performed in HEC-RAS to simulate LW entrainment in two valley bottom segments of the Dyje River, Czechia, where LW deposition is a significant hazard to the dam of the downstream Znojmo reservoir. We surveyed all LW pieces in the inundation area of the 2002 extreme (>Q100) flood and simulated their entrainment for eight flood scenarios (1–100-year recurrence interval). We used the equations of Braudrick and Grant (2000, https://doi.org/10.1029/1999WR900290) to calculate the LW entrainment threshold; we introduced coefficient k accounting for the incomplete submersion of LW pieces resting on an inclined surface into the original equations. Four entrainment categories — stable, wetted stable, wetted buoyant, and wetted entrained — were defined, and the proportion of LW pieces in each category was calculated for the flood scenarios. We found marked differences in entrainment categories for respective flood scenarios between the two valley segments. These were attributed to the differences in pieces' dimensions, their spatial distribution within the inundation area, and valley-bottom topography, which affects the hydraulic conditions for a given discharge. The presented approach enables the calculation of the LW quantity potentially mobilized by the flood of a certain magnitude indicating the degree of potential risk for the infrastructures located downstream.
ER  -

HLAVŇA, Matej, Zdeněk MÁČKA a Jakub ZÁTHURECKÝ. Numerical Modeling of Potential Large Wood Entrainment in Rivers: Application of Hybrid Modeling in the Inter-Dam Reach of the Dyje River, Czechia. \textit{Water Resources Research}. American Geophysical Union, 2024, roč.~60, č.~4, s.~1-20. ISSN~0043-1397. Dostupné z: https://dx.doi.org/10.1029/2023WR035145.

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