Assessment of the effects of multiple extreme floods on flow and transport processes under competing flood protection and environmental management strategies

Tu, Tongbi; Carr, K. J.; Ercan, Ali; Trinh, T.; Kavvas, M. L.; Nosacka, John

doi:10.1016/j.scitotenv.2017.06.271

Cited by 19 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The occurrence of high daily amounts can influence mean rainfall in any given period, month, season and year and affect soil erosion and increase its risk (Zubieta et al, 2016;He et al, 2017). Changes in both frequency and severity of intense rainfall episodes can directly affect the occurrence of floods leading to many negative impacts on human and natural systems (Tu et al, 2017;Génova et al, 2018). The precipitation seasonality in the MR is considered one of the main factors which affect the terrestrial and aquatic ecosystems and the human development (Lorenzo-Lacruz et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Mathbout

López-Bustins

Royé

et al. 2019

Intl Journal of Climatology

View full text Add to dashboard Cite

This study has addressed the spatiotemporal distribution of the daily rainfall concentration and its relation to the teleconnection patterns across the Mediterranean (MR). Daily concentration index (CI) and the ordered n index ( nor) are used at annual time scale to reveal the statistical structure of precipitation across the MR based on 233 daily rainfall series for the period 1975–2015. Eight teleconnection patterns, North Atlantic Oscillation (NAO), Mediterranean Oscillation (MO), Western Mediterranean Oscillation (WeMO), Upper‐Level Mediterranean Oscillation index (ULMO), East Atlantic (EA) pattern, East Atlantic/West Russia (EATL/WRUS) pattern, Scandinavia (SCAND) pattern and Southern Oscillation (SO) at annual time scale are selected. The spatiotemporal patterns in precipitation concentration indices, annual precipitation and their teleconnections with previous large‐scale circulations are investigated. Results show a strong connection between the CI and the nor (r = 0.70, p < .05) which present the same relative areas of high and low concentration. The annual values range from 0.57 to 0.70 for CI and 0.49 to 0.71 for nor index which show a high daily precipitation concentration across the MR. Trend analysis demonstrated mostly significant increasing trends for both indices. This increase is mainly found in south France, northern coastlands of the Iberian Peninsula (IP), Greece and Tunisia. An inverse relationship between the number of rainy days and concentration indices is evident. Both of WeMO and MO can play an important role in modulating rainfall in the northwest Mediterranean. The positive EATL/WRUS phase is mainly connected with positive precipitation mean anomalies in the eastern Mediterranean and vice versa in the west. The high daily precipitation concentration values over south France, northeast Spain, Croatia and Tunisia are linked to the low values of WeMO and high values of EA. These results could pave the way for new possibilities regarding the projection of precipitation concentration and precipitation irregularity in downscaling techniques.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Mathbout

López-Bustins

Royé

et al. 2019

Intl Journal of Climatology

View full text Add to dashboard Cite

show abstract

“…Oftentimes, single sites such as the CCSB, are of interest to a variety of local, state, and government agencies for different reasons (flood protection, pollution fate and transport, sedimentation and erosion) (Tu et al, 2017). Tools such as the calibration method outlined in this article can be helpful to operations engineers and management agencies when evaluating current performance and proposed modifications to existing systems, including large water bodies interacting with rivers, settling basins, leveed floodplains, and reservoirs.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the Applicability of a Two‐dimensional Flow Model of a Highly Heterogeneous Domain to Flow and Environmental Management

Carr

Ercan

et al. 2017

J American Water Resour Assoc

Self Cite

View full text Add to dashboard Cite

Two‐dimensional simulation of highly heterogeneous domains, especially those with disparate length scales, roughness conditions, and geometries, often leads to challenges such as long computation times and numerical instability. Simulation of challenging domains is often needed to guide flood management and environmental regulation agencies in operation and potential domain modifications. This work evaluates the ability of a two‐dimensional unsteady hydrodynamic model to represent long‐duration transient flows over a domain with highly heterogeneous roughness, geometric characteristics, and length scales through bed roughness representation. The domain includes 13 km of Cache Creek and the 14.5 km2 Cache Creek Settling Basin, which traps both sediment and mercury. Calibration under different bed roughness methods, validation, and modeling results of bathymetric modification scenarios are presented. The modeling approach's performance supports its application as a tool for management of similar domains, such as settling basins, leveed floodplains, and reservoirs. Accurate representation of flow dynamics can also inform environmental management that involves transport of sediments, nutrients, and heavy metals. This study found that a two‐dimensional unsteady flow model can accurately represent long‐duration transient flow in a large settling basin with highly heterogeneous characteristics without parsing of the domain or flow events simulated.

show abstract

“…2D models in particular have the advantage of simulating the propagation of flow and morphological parameters with high accuracy (Ghanem et al, 1996;Shen & Diplas, 2008). The most commonly used 2D modeling software packages are: the MIKE 21 model (DHI, 2011), the FLOW 2D model (O'Brien, 2006), the Wolf2dV model (Erpicum et al, 2006;Detrembleur et al, 2009), the AdH model (Berger et al 2013), the TUFLOW model (Syme, 2016), and the CCHE2D hydrodynamic model (Tu et al, 2017). Pasternack and Senter (2011) and Pasternack et al (2006) showed that the predicted hydrodynamic parameters, e.g.…”

Section: Introductionmentioning

confidence: 99%

Implementation of the AdH hydrodynamic model on the Włocławek Reservoir

et al. 2023

View full text Add to dashboard Cite

The variation of water velocity in an artificial dam reservoir is influenced not only by the inflow discharge, but also by the bathymetry of the reservoir and the water level at the dam. The depiction of spatially complex variations in flow velocity through a reservoir would not be possible without the use of hydrodynamic models. A reliable hydrodynamic model of the reservoir is an effective tool for predicting and analyzing changes in the reservoir geoecosystem in an age of changing climate and risk of water stress. A depth-averaged two-dimensional AdH model was used to visualize the hydrodynamics of the Włocławek Reservoir. Running the model for eight different hydrological conditions delivered consistent results and allowed to calibrate the model parameters. Additionally, it provided a way to verify the data regarding the rating curve of the Vistula River upstream the reservoir.

show abstract

Assessment of the effects of multiple extreme floods on flow and transport processes under competing flood protection and environmental management strategies

Cited by 19 publications

References 28 publications

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Evaluating the Applicability of a Two‐dimensional Flow Model of a Highly Heterogeneous Domain to Flow and Environmental Management

Implementation of the AdH hydrodynamic model on the Włocławek Reservoir

Contact Info

Product

Resources

About