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- Author:
- Eddy J. Langendoen, et al. ; Nisreen G. Al-Ghorani; Marwan A. Hassan; Show all 3 Authors
- Source:
- Geomorphology 2022 v.413 pp. 108375
- ISSN:
- 0169-555X
- Subject:
- clay; data collection; geomorphology; gravel; riparian areas; sand; silt; streams; watersheds; Mississippi
- Abstract:
- ... Understanding morphodynamic processes and their controls has long been the focus of geomorphologists. Studying channel adjustments with respect to fractional sediment (clay + silt, sand, and gravel) is often hampered by the lack of both long-term measurements and detailed information about their transport. Taking advantage of a 20-year detailed dataset from Goodwin Creek, Mississippi (USA), this s ...
- DOI:
- 10.1016/j.geomorph.2022.108375
- https://doi.org/10.1016/j.geomorph.2022.108375
- Author:
- Eddy J. Langendoen, et al. ; Nisreen G. Al‐Ghorani; Marwan A. Hassan; Show all 3 Authors
- Source:
- Water resources research 2021 v.57 no.11 pp. e2021WR030851
- ISSN:
- 0043-1397
- Subject:
- data collection; decline; erosion control; highlands; land use; periodicity; research; riparian vegetation; sand; sediment contamination; stream flow; streams; subwatersheds; suspended sediment; time series analysis; water; watershed management; wavelet; Mississippi
- Abstract:
- ... Understanding suspended sediment dynamics and their driving factors is essential for effective watershed management. In this study, the spatiotemporal patterns of suspended sediment were identified for 11 sub‐watersheds of the Goodwin Creek, Mississippi, USA, for the period 1982–2002 using wavelet transforms. The continuous wavelet transform (CWT) results of streamflow time series showed that a ne ...
- DOI:
- 10.1029/2021WR030851
- https://doi.org/10.1029/2021WR030851
- Author:
- Eddy J. Langendoen, et al. ; Garey A. Fox; Lucie Guertault; Celso Castro-Bolinaga; Peter Allen; Kari A. Bigham; Stephane Bonelli; Sherry Lynn Hunt; Kayla Kassa; Erin Porter; Iman Shafii; Tony Wahl; Tess Wynn Thompson; Show all 13 Authors
- Source:
- Journal of the ASABE v.65 no.2 pp. 197-207
- ISSN:
- 2769-3287
- Subject:
- erodibility; hydrodynamics; shear stress
- Abstract:
- ... HighlightsThe JET is a key instrument for in situ and laboratory measurement of soil erodibility.Operation and reporting guidelines are needed to ensure consistency across JETs and applications.JET design improvements and hydrodynamic studies are needed to inform proper analyses and limit operator effects.Erodibility databases should be developed that report JET, soil, and fluid properties. Keywor ...
- DOI:
- 10.13031/ja.14714
- https://doi.org/10.13031/ja.14714
- Author:
- Eddy J. Langendoen, et al. ; Chalachew A. Mulatu; Alessandra Crosato; Michael M. Moges; Michael E. McClain; Show all 5 Authors
- Source:
- International journal of river basin management 2021 v.19 no.4 pp. 429-443
- ISSN:
- 1814-2060
- Subject:
- administrative management; analytical methods; computer simulation; irrigation; models; rivers; sediments; stream channels; water supply; watersheds; Ethiopia
- Abstract:
- ... This work investigates the applicability of an analytical method for quick assessments of the long-term morphological effects of different dam operations on downstream river reaches with the idea to apply the method in feasibility studies to identify the least morphologic-impacting operation scenario. The Ribb River (Ethiopia) is used as a study case. The analytical method estimates the idealized, ...
- DOI:
- 10.1080/15715124.2020.1750421
- https://doi.org/10.1080/15715124.2020.1750421
- Author:
- Eddy J. Langendoen, et al. ; Jinqi Zhu; Zhun Mao; Yunqi Wang; Yujie Wang; Tong Li; Kai Wang; Bofu Zheng; Show all 8 Authors
- Source:
- Catena 2022 v.219 pp. 106574
- ISSN:
- 0341-8162
- Subject:
- Symplocos; biomass; canopy gaps; catenas; hysteresis; shear strength; soil quality; soil water; tensile strength; vegetation; volumetric water content; water content; China
- Abstract:
- ... Plant roots can protect soil against shallow landslides. The mechanics of rooted soil failure under varying soil water content remain poorly understood. The aim of our study was to characterize the impact of soil water content on root mechanical traits and reinforcement to soil. One-year-old Symplocos setchuensis trees were replanted in shear boxes (0.4 × 0.4 × 0.5 m³), which were placed in a cano ...
- DOI:
- 10.1016/j.catena.2022.106574
- https://doi.org/10.1016/j.catena.2022.106574
- Author:
- Eddy J. Langendoen, et al. ; Razieh Anari; Rollin H. Hotchkiss; Show all 3 Authors
- Source:
- Water 2020 v.12 no.3 pp. -
- ISSN:
- 2073-4441
- Subject:
- chemical elements; computer simulation; density; design; dimensions; equations; models; paper; planning; population growth; prediction; pressure; sediment deposition; sediments; storage; water; water supply
- Abstract:
- ... Computer simulation of reservoir sediment management strategies is becoming more important as worldwide water supply shrinks due to sediment deposition, while population growth continues. We identified the physical processes underlying each of the several alternatives available to transport incoming or deposited sediments downstream into receiving waters and the governing equations that describe e ...
- DOI:
- 10.3390/w12030714
- https://doi.org/10.3390/w12030714
- Author:
- Eddy J. Langendoen, et al. ; Taylor Rowley; Kory Konsoer; Zhi Li; Mick Ursic; Marcelo H. Garcia; Show all 6 Authors
- Source:
- Geomorphology 2021 v.375 pp. 107541
- ISSN:
- 0169-555X
- Subject:
- bedrock; data collection; geomorphology; head; models; rivers; sonar
- Abstract:
- ... Point bars are prominent features in meandering rivers, yet our understanding of the complex interactions among the morphology of the point bars to channel planform and curvature remains incomplete. This study seeks to address the extent to which channel centerline curvature can explain point bar morphology. High-resolution elevation datasets obtained from multibeam sonar and structure-from-motion ...
- DOI:
- 10.1016/j.geomorph.2020.107541
- https://doi.org/10.1016/j.geomorph.2020.107541
- Author:
- Eddy J. Langendoen, et al. ; Assefa D. Zegeye; Tammo S. Steenhuis; Wolde Mekuria; Seifu A. Tilahun; Show all 5 Authors
- Source:
- International journal of ecohydrology & hydrobiology 2020 v.20 no.2 pp. 301-311
- ISSN:
- 1642-3593
- Subject:
- cohesion; control methods; cost effectiveness; erosion control; friction; gully erosion; highlands; lakes; models; ravines; saturated conditions; soil; soil sampling; surveys; vegetation; water table; watersheds; Ethiopia
- Abstract:
- ... Gullies that are expanding at alarming rate are responsible for the majority of soil losses in the (sub) humid highlands of Ethiopia. Few affordable and effective methods for gully erosion control are available in the highlands. The objective of the study was to develop cost-effective measures to halt gully expansion by determining stable-bank conditions under a variety of environmental situations ...
- DOI:
- 10.1016/j.ecohyd.2020.02.003
- https://doi.org/10.1016/j.ecohyd.2020.02.003
- Author:
- Eddy J. Langendoen, et al. ; Yan Ding; Show all 2 Author
- Source:
- Journal of Applied Water Engineering and Research pp. -
- ISSN:
- 2324-9676
- Subject:
- Oregon; evolution; guidelines; model validation; prediction; research; rivers; sediment transport; sediments; water; Michigan
- Abstract:
- ... This paper presents two case studies of post-dam removal sedimentation in the United States. Two similar 1D channel evolution simulation models were used: CCHE1D and CONCEPTS. The first case is the model validation and application of CCHE1D to assess morphological response to the Marmot Dam removal in the Sandy River, Oregon. Simulation results showed a persistent erosion of sediments from the res ...
- Handle:
- 10113/7345173
- DOI:
- 10.1080/23249676.2016.1224691
- CHORUS:
- 10.1080/23249676.2016.1224691
- https://doi.org/10.1080/23249676.2016.1224691
- Author:
- Eddy J. Langendoen, et al. ; Kindiye Ebabu; Atsushi Tsunekawa; Nigussie Haregeweyn; Mitsuru Tsubo; Enyew Adgo; Ayele Almaw Fenta; Derege Tsegaye Meshesha; Mulatu Liyew Berihun; Dagnenet Sultan; Matthias Vanmaercke; Panos Panagos; Pasquale Borrelli; Jean Poesen; Show all 14 Authors
- Source:
- International soil and water conservation research 2022 v.10 no.2 pp. 161-176
- ISSN:
- 2095-6339
- Subject:
- Revised Universal Soil Loss Equation; arid lands; corn; cropland; data collection; erosion control; humans; land use; olives; orchards; potatoes; research; rill erosion; site preparation; soil; water conservation; watershed management
- Abstract:
- ... Cover management and support practices largely control the magnitude and variability of soil erosion. Although soil erosion models account for their importance (particularly by C- and P-factors in the Revised Universal Soil Loss Equation), obtaining spatially explicit quantitative field data on these factors remains challenging. Hence, also our insight into the effects of soil conservation measure ...
- DOI:
- 10.1016/j.iswcr.2021.12.002
- https://doi.org/10.1016/j.iswcr.2021.12.002
- Author:
- Eddy J. Langendoen, et al. ; Jinqi Zhu; Yunqi Wang; Yujie Wang; Zhun Mao; Show all 5 Authors
- Source:
- Plant and soil 2020 v.446 no.1-2 pp. 211-227
- ISSN:
- 0032-079X
- Subject:
- Symplocos; biodegradation; cellulose; hemicellulose; lignin; shear strength; soil; tensile strength
- Abstract:
- ... AIMS: Previous studies have shown that root reinforcement provided by trees could decrease over time after stem cutting. The short-term changes in root mechanical and structural traits associated with root reinforcement after stem cutting have not been fully studied. We aimed to quantify the temporal changes in root mechanical and structural traits following stem cutting, and to identify the major ...
- DOI:
- 10.1007/s11104-019-04345-x
- https://doi.org/10.1007/s11104-019-04345-x
- Author:
- Eddy J. Langendoen, et al. ; Meseret B. Addisie; Getaneh K. Ayele; Nigus Hailu; Seifu A. Tilahun; Petra Schmitter; J.-Yves Parlange; Tammo S. Steenhuis; Show all 8 Authors
- Source:
- Journal of hydrology and hydromechanics 2020 v.68 no.4 pp. 313-327
- ISSN:
- 1338-4333
- Subject:
- aquifers; highlands; hills; infiltration rate; monsoon season; overland flow; piezometers; rain; rain intensity; river flow; runoff; subsurface flow; topographic slope
- Abstract:
- ... Effective watershed planning requires an understanding of the hydrology. In the humid tropical monsoon climates and especially in volcanic highland regions such as the Ethiopian Highlands, the understanding of watershed processes is incomplete. The objective is to better understand the hydrology of the volcanic regions in the humid highlands by linking the hillslope processes with the discharge at ...
- DOI:
- 10.2478/johh-2020-0015
- https://doi.org/10.2478/johh-2020-0015
- Author:
- Eddy J. Langendoen, et al. ; Roderick W. Lammers; Brian P. Bledsoe; Show all 3 Authors
- Source:
- Earth Surface Processes and Landforms 2017 v.42 no.4 pp. 612-623
- ISSN:
- 1931-8065
- Subject:
- Agricultural Research Service; Monte Carlo method; aquatic ecosystems; bank erosion; clay; cohesion; erodibility; eutrophication; groundwater; hydrologic models; landforms; mechanistic models; model validation; phosphorus; pollution load; prediction; riparian areas; rivers; sand; shear stress; simulation models; streambank stability; streams; uncertainty; water quality; watersheds; Vermont
- Abstract:
- ... Eutrophication of aquatic ecosystems is one of the most pressing water quality concerns in the United States and around the world. Bank erosion has been largely overlooked as a source of nutrient loading, despite field studies demonstrating that this source can account for the majority of the total phosphorus load in a watershed. Substantial effort has been made to develop mechanistic models to pr ...
- Handle:
- 10113/5763095
- DOI:
- 10.1002/esp.4004
- https://doi.org/10.1002/esp.4004
- Author:
- Eddy J. Langendoen, et al. ; Chalachew A. Mulatu, Chalachew A.; Alessandra Crosato; Michael M. Moges; Michael McClain; Show all 5 Authors
- Source:
- Geosciences 2018 v.8 no.7 pp. 255-277
- ISSN:
- 2076-3263
- Subject:
- aerial photography; anthropogenic activities; dams (hydrology); geomorphology; geospatial data processing; hydrodynamics; irrigation; lakes; mining; river flow; river regulation; rivers; sediment deposition; sediment transport; sediment yield; stream channels; surface water level; weirs; Ethiopia
- Abstract:
- ... The meandering Ribb River flows in North-West Ethiopia to Lake Tana, the source of the Blue Nile River. The river has already undergone several human interventions, such as embanking, sand mining, water extraction and lake level regulation for hydropower. At present, a dam and a weir are under-construction to store and divert water for irrigation. This will strongly alter both water and sediment d ...
- Handle:
- 10113/6473318
- DOI:
- 10.3390/geosciences8070255
- https://doi.org/10.3390/geosciences8070255
- Author:
- Eddy J. Langendoen, et al. ; Juana E. Stover; Edward A. Keller; Tom L. Dudley; Show all 4 Authors
- Source:
- Geosciences 2018 v.8 no.304 pp. 304-334
- ISSN:
- 2076-3263
- Subject:
- Arundo donax; Salix laevigata; alluvial plains; alluvial soils; bank erosion; floodplains; fluvial soils; indigenous species; interspecific competition; invasive species; perennial grasses; rhizomes; riparian areas; riparian forests; rivers; root systems; rooting; roots; semiarid zones; stream channels; streambank stability; tensile strength; California
- Abstract:
- ... Arundo donax (giant reed) is a large, perennial grass that invades semi-arid riparian systems where it competes with native vegetation and modifies channel geomorphology. For the Santa Clara River, CA, changes in channel width and intensity of braiding over several decades are linked in part to high flow events that remove A. donax. Nevertheless, the area of A. donax at the two study sites increas ...
- Handle:
- 10113/6473319
- DOI:
- 10.3390/geosciences8080304
- https://doi.org/10.3390/geosciences8080304
- Author:
- Eddy J. Langendoen, et al. ; Napoleon Gudino-Elizondo; Trent W. Biggs; Ronald L. Bingner; Thomas Kretzschmar; Encarnación V. Taguas; Kristine T. Taniguchi-Quan; Douglas Liden; Yongping Yuan; Show all 9 Authors
- Source:
- Water 2019 v.11 no.5 pp. -
- ISSN:
- 2073-4441
- Subject:
- AGNPS model; control methods; geometry; gully erosion; roads; runoff; sediment yield; sediments; suspended sediment; topographic slope; urbanization; watersheds; Mexico
- Abstract:
- ... Urbanization can increase sheet, rill, gully, and channel erosion. We quantified the sediment budget of the Los Laureles Canyon watershed (LLCW), which is a mixed rural-urbanizing catchment in Northwestern Mexico, using the AnnAGNPS model and field measurements of channel geometry. The model was calibrated with five years of observed runoff and sediment loads and used to evaluate sediment reductio ...
- DOI:
- 10.3390/w11051024
- PubMed:
- 31583124
- PubMed Central:
- PMC6775644
- https://doi.org/10.3390/w11051024
- Author:
- Eddy J. Langendoen, et al. ; Roger A. Kuhnle; Daniel G. Wren; Show all 3 Authors
- Source:
- Journal of hydraulic engineering 2016 v.142 no.2 pp. 04015052
- ISSN:
- 0733-9429
- Subject:
- cleaning; cumulative distribution; engineering; gravel; habitats; sand; shear stress; stream channels; suspended sediment; water erosion
- Abstract:
- ... Cleaning of fine sediment out of gravel stream beds has become an important method to restore impacted stream habitats. Introducing the increased flows needed to entrain fine sediments without eroding the coarser fractions of the bed and potentially destroying its usefulness as a habitat requires careful selection of flow strength. Towards this end, a series of experiments was conducted on the ent ...
- Handle:
- 10113/61971
- DOI:
- 10.1061/(ASCE)HY.1943-7900.0001071
- https://doi.org/10.1061/(ASCE)HY.1943-7900.0001071
- Author:
- Eddy J. Langendoen, et al. ; Roger A. Kuhnle; Daniel G. Wren; Show all 3 Authors
- Source:
- Journal of Hydraulic Engineering 2017 v.143 no.7 pp. -
- ISSN:
- 2332-8215
- Subject:
- gravel; prediction; rivers; sand; sediment transport; shear stress; streams; watershed management
- Abstract:
- ... Successful sediment management of streams and rivers downstream of dams requires a method for predicting sand transport across a range of conditions that can include sand transported below the top of an armored gravel layer through complete burial of the coarse substrate. Previous studies have shown that the elevation of sand relative to gravel along with shear stress at the elevation of the sand ...
- Handle:
- 10113/5763087
- DOI:
- 10.1061/(ASCE)HY.1943-7900.0001292
- https://doi.org/10.1061/(ASCE)HY.1943-7900.0001292
- Author:
- Eddy J. Langendoen, et al. ; Demesew A. Mhiret; Dessalegn C. Dagnew; Christian D. Guzman; Tilashwork C. Alemie; Assefa D. Zegeye; Tigist Y. Tebebu; Benjamin F. Zaitchik; Seifu A. Tilahun; Tammo S. Steenhuis; Show all 10 Authors
- Source:
- Journal of environmental management 2020 v.270 pp. 110885
- ISSN:
- 0301-4797
- Subject:
- Eucalyptus; acreage; bunds; environmental management; gully erosion; lowlands; monsoon season; observational studies; runoff; sediments; soil; stream flow; streams; suspended sediment; water conservation; water table; watersheds; Ethiopia
- Abstract:
- ... A nine-year (2010–2018) field study in the Debre Mawi watershed was conducted to understand the effect of governmentally-imposed and farmer-initiated conservation practices. The watershed is in the sub-humid Ethiopian Highlands which experience high and increasing erosion rates despite years of conservation efforts. Consequently, reservoirs are filling up with sediment and soil degradation is enha ...
- DOI:
- 10.1016/j.jenvman.2020.110885
- https://doi.org/10.1016/j.jenvman.2020.110885
- Author:
- Eddy J. Langendoen, et al. ; Daniel G. Wren; Michael E. Ursic; Roger A. Kuhnle; Show all 4 Authors
- Source:
- Journal of Hydraulic Engineering 2017 v.143 no.4 pp. -
- ISSN:
- 0733-9429
- Subject:
- energy; gravel; roughness; sand; shear stress; stream channels; turbulent flow; velocity
- Abstract:
- ... Turbulence measurements over rough beds are used for a variety of purposes, including studies of habitat diversity for aquatic organisms, stream restoration efforts, and assessment of drag induced by vegetation. Turbulent kinetic energy (TKE) has been used to estimate bed shear stress by use of a proportionality constant of 0.19–0.21. The TKE method of bed shear stress estimation is less sensitive ...
- Handle:
- 10113/5661728
- DOI:
- 10.1061/(ASCE)HY.1943-7900.0001265
- https://doi.org/10.1061/(ASCE)HY.1943-7900.0001265
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