A New Framework to Model Hydraulic Bank Erosion Considering the Effects of Roots

Gasser, Eric; Perona, Paolo; Dorren, Luuk; Phillips, Chris; Hübl, Johannes; Schwarz, Massimiliano

doi:10.3390/w12030893

Cited by 17 publications

(15 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A few stochastic models have been developed, generally at the river reach scale (Bragg et al, 2000; Eaton et al, 2012; Gregory & Meleason, 2003) to account for uncertainties and lack of empirical observations. At the catchment scale, the proposed probabilistic approaches usually simulate single wood supply processes, such as landslides (see Cislaghi et al, 2018 or van Zadelhoff et al, 2022) or bank erosion (Gasser et al, 2018, 2020), neglecting the occurrence of multiple processes and the interaction between them. Most of the models used to study wood supply are based on existing geospatial information (e.g., hazard or susceptibility maps to recruitment processes) or expert‐based buffers (Mazzorana et al, 2009; Steeb et al, 2017), and they were not intended to model the wood supply processes.…”

Section: Instream Wood Supplymentioning

confidence: 99%

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Ruiz‐Villanueva,

Aarnink,

Ghaffarian

et al. 2024

Earth Surf Processes Landf

View full text Add to dashboard Cite

Large wood drives both the form and function of gravel‐bed rivers draining forested basins. Previously overlooked benefits of wood in rivers are now widely recognized. Together with flow and sediment regimes, the wood regime controls rivers' physical and ecological integrity. Yet large quantities of wood transported during floods can pose additional hazards, potentially damaging infrastructures like bridges or dams and exacerbating flooding. However, unlike the water and sediment regimes intensively studied over the past decades, the instream wood regime or budgeting has been only recently defined and thus is still rarely quantified. The instream wood budget describes the cascading processes from supply or recruitment, entrainment, and transport to deposition, storage and decay (i.e., fragmentation or decomposition). These processes show high spatial and temporal variability but can be characterized by magnitude, frequency, timing, duration and mode. Instream wood budgeting is challenging, primarily because of the lack of observations, monitoring stations, and standardized protocols to acquire data. This contribution reviews the most recent advances to quantify the different instream wood budget components, notably the wood supply, and transfer. Case studies showing applications of biogeochemistry, videography, artificial intelligence, numerical modelling or tracking illustrate the current progress. Because critical challenges remain, we identify and describe some of them and discuss how the wood in riverine sciences may develop in the future.

show abstract

Section: Instream Wood Supplymentioning

confidence: 99%

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Ruiz‐Villanueva,

Aarnink,

Ghaffarian

et al. 2024

Earth Surf Processes Landf

View full text Add to dashboard Cite

show abstract

“…Similarly, Gasser et al (2018Gasser et al ( , 2020 proposed two frameworks to model shallow landslides, and geotechnical and hydraulic bank erosion applying two physically-based stochastic models together with a tree detection algorithm (Dorren, 2017) to estimate LW supply. Zischg et al…”

Section: Large Wood Supply Models: a Reviewmentioning

confidence: 99%

“…At the catchment scale, a probabilistic multi-dimensional approach has recently been proposed (Cislaghi et al, 2018) to study wood sources from hillslopes, modelling areas susceptible to landslides, but it neglects other processes such as bank erosion. The latter process has been considered in one of the most recent studies on LW (Gasser et al, 2020).…”

Section: Qualitative Comparison Of Ega and Fga With Other Similar App...mentioning

confidence: 99%

Geospatial modelling of large wood supply to rivers: a state-of-the-art model comparison in Swiss mountain river catchments

Steeb

Ruíz-Villanueva

Badoux

et al. 2023

Preprint

View full text Add to dashboard Cite

Abstract. Different models have been used in science and practice to identify instream large wood (LW) sources and to estimate LW supply to rivers. This contribution reviews the existing models proposed in the last 35 years and compares two of the most recent GIS-based models by applying them to 40 catchments in Switzerland. Both models, which we call here empirical GIS approach (EGA) and Fuzzy-Logic GIS approach (FGA), consider landslides, debris flows, bank erosion, and mobilization of instream wood as recruitment processes and compute volumetric estimates of LW supply based on three different scenarios of process frequency and magnitude. Despite being developed following similar concepts and fed with similar input data, the results from the two models differ markedly. In general, estimated supply wood volumes were larger in each of the scenarios when computed with the FGA and lower with the EGA models. Landslides were the dominant process identified by the EGA, whereas bank erosion was the predominant process according to the FGA model. These differences are discussed and results compared to available observations coming from a unique database. Regardless of the limitations of these models, they proved extremely useful for hazard assessment, and the design of infrastructure and other management strategies.

show abstract

“…Bank erosion can be quantitatively estimated by measuring volume of material removed within specified spatial and temporal scales using techniques including erosion pins, repeat bank surveys on the ground, or sequential remote imagery (e.g., Lawler, 1993; Williams et al., 2020). Bank erosion can also be inferred using numerical models (e.g., Gasser et al., 2020; Rinaldi & Darby, 2007). Given the spatial and temporal heterogeneity of bank erosion (Janes et al., 2018; Konsoer et al., 2016), spatial and temporal scale and resolution become a primary consideration in applying any measurement technique or model.…”

Section: Floodplain Budgetsmentioning

confidence: 99%

An Integrative Conceptualization of Floodplain Storage

Wohl

2021

Reviews of Geophysics

View full text Add to dashboard Cite

Floodplains perform diverse functions, including attenuation of fluxes of water, solutes, and particulate material. Critical details of floodplain storage including magnitude, duration, and spatial distribution are strongly influenced by floodplain biogeochemical processes and biotic communities. Floodplain storage of diverse materials can be conceptualized in the form of a budget that quantifies inputs, outputs, and storage within the floodplain control volume. The floodplain control volume is here defined as bounded on the inner edges by the banks of the active channel(s), on the outer edges by the limit of periodic flooding and the deposition of fluvially transported sediment, on the underside by the extent of hyporheic exchange flows and the floodplain aquifer, and on the upper side by the upper elevation of living vegetation. Fluxes within the floodplain control volume can also change the location, characteristics, and residence time of material in storage. Fluxes, residence time, and quantities of material stored in floodplains can be measured directly; inferred from diverse types of remotely sensed data; or quantitatively estimated using numerical models. Human activities can modify floodplain storage by: hydrologically and/or geomorphically disconnecting channels and floodplains; altering fluxes of water and sediment to the river corridor; and obliterating floodplains through alluvial mining or urbanization. Floodplain restoration can focus on enlarging the functional floodplain, reconnecting the channel and floodplain, restoring natural regimes of water, sediment, and/or large wood, or enhancing the spatial heterogeneity of the channel and floodplain. Each form of floodplain restoration can increase floodplain storage and resilience to disturbances.

show abstract

A New Framework to Model Hydraulic Bank Erosion Considering the Effects of Roots

Cited by 17 publications

References 71 publications

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Geospatial modelling of large wood supply to rivers: a state-of-the-art model comparison in Swiss mountain river catchments

An Integrative Conceptualization of Floodplain Storage

Contact Info

Product

Resources

About