An assessment of engineered log jam structures in response to a flood event in an upland gravel-bed river

2016 ◽  
Vol 41 (12) ◽  
pp. 1658-1670 ◽  
Author(s):  
Stephen Addy ◽  
Mark Wilkinson
Keyword(s):  
Flood Event ◽  
Gravel Bed ◽  
Gravel Bed River

HYDRODYNAMICS OF A GRAVEL-BED RIVER FOLLOWING A LARGE FLOOD EVENT

2019 ◽  
Author(s):  
COLIN D RENNIE ◽  
PARNA PARSAPOUR-MOGHADDAM ◽  
YANG XIA ◽  
SABER ANSARI ◽  
JONATHAN SLANEY
Keyword(s):  
Flood Event ◽  
Gravel Bed ◽  
Gravel Bed River

scholarly journals Bank erosion and large wood recruitment along a gravel bed river

2016 ◽  
Vol 47 (2) ◽  
pp. 72 ◽  
Author(s):  
Lorenzo Picco ◽  
Alessia Tonon ◽  
Riccardo Rainato ◽  
Mario Aristide Lenzi
Keyword(s):  
Buffer Zone ◽  
Common Species ◽  
Volume Density ◽  
Flood Event ◽  
Large Wood ◽  
Gravel Bed ◽  
North Eastern ◽  
Gravel Bed River ◽  
Riverine Systems ◽  
Active Channel

Riverine environments can be very dynamic and complex systems, particularly because of the interaction between active channel and riparian land during flood events of different magnitude. In recent years increasing attention has been paid to large wood (LW), focusing on its role and impact along riverine systems and fluvial landscapes. This research aims to analyze the characteristics of LW recruitment as a consequence of a flood event along a reach of a gravel-bed river. The study was conducted on a 3 km-long reach located in the middle course of the Piave River (north-eastern Italian Alps). A 20 m-wide buffer zone was considered along the floodplains and islands. Every standing tree in this buffer with diameter ≥0.10 m was measured manually (diameter breast height; height), whereas shrubs were not considered. The most common species in the study area are: <em>Populus</em> sp., <em>Salix</em> sp., <em>Alnus</em> sp., <em>Carpinus</em> sp., <em>Fraxinus</em> sp., <em>Pinus</em> <em>sylvestris</em> and <em>Robinia</em> <em>pseudoacacia</em>. An over bankfull flood (Q=1329 m<sup>3</sup>s<sup>–1</sup>; recurrence interval=6 years) in November 2014 caused erosions along the floodplain (15,565.5 m<sup>2</sup>), pioneer islands (25.2 m<sup>2</sup>) and building islands (2085.6 m<sup>2</sup>), recruiting 690 trees. Four of these trees were recruited from the pioneer islands (0.16 tree m<sup>–2</sup>), 79 from building islands (0.04 tree m<sup>–2</sup>) and 607 from floodplains (0.04 tree m<sup>–2</sup>). Accurate dendrometric measurements were used to define the input volume of LW from the floodplains (86.25 m<sup>3</sup>), pioneer islands (0.14 m<sup>3</sup>) and building islands (6.62 m<sup>3</sup>). The maximum distance traveled by LW recruited from the floodplain, pioneer and building islands was 8927, 1021 and 3727 m, respectively. Statistical analysis showed no significant relationship between the displacement and LW characteristics considered (diameter, length, volume, density). These results demonstrate that the recruitment and subsequent transport of LW is a complex mechanism that requires further study. To better characterize these mechanisms, it appears clear that it is important to consider not only the LW characteristics but also the connection between LW, morphological settings, and flood event characteristics.

MONITORING UNSTEADY STREAMFLOW-STAGE HYSTERESIS BEHAVIOR OF A GRAVEL-BED RIVER

2018 ◽  
Vol 74 (4) ◽  
pp. I_313-I_318
Author(s):  
Mohamad Basel AL SAWAF ◽  
Kiyosi KAWANISI ◽  
Mochammad Meddy DANIAL
Keyword(s):  
Hysteresis Behavior ◽  
Gravel Bed ◽  
Gravel Bed River

scholarly journals Estimates of resource transfer via winged adult insects from the hyporheic zone in a gravel‐bed river

2021 ◽  
Author(s):  
Mirza A. T. M. Tanvir Rahman ◽  
Junjiro N. Negishi ◽  
Takumi Akasaka ◽  
Futoshi Nakamura
Keyword(s):  
Hyporheic Zone ◽  
Resource Transfer ◽  
Gravel Bed ◽  
Gravel Bed River

scholarly journals STUDY ON THE EXCESSIVE GROWTH OF REVERINE TREES IN GRAVEL-BED RIVER

1999 ◽  
Vol 43 ◽  
pp. 971-976 ◽  
Author(s):  
Yoshihiko SHIMIZU ◽  
Shigeki KOBATAKE ◽  
Takayuki ARAFUNE ◽  
Satoshi OKADA
Keyword(s):  
Gravel Bed ◽  
Gravel Bed River

Morphological and Stratigraphical Signature of Floods In A Braided Gravel-Bed River Revealed From Flume Experiments

2013 ◽  
Vol 83 (11) ◽  
pp. 1032-1045 ◽  
Author(s):  
W. I. Van De Lageweg ◽  
W. M. Van Dijk ◽  
M. G. Kleinhans
Keyword(s):  
Flume Experiments ◽  
Gravel Bed ◽  
Gravel Bed River
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