The role of turbulence in transporting waterborne material within streambed sediments and across the sediment-water interface
Grant number: DP130103619 | Funding period: 2013 - 2016
The sediments of rivers, lakes and coastal ocean filter waterborne contaminants. This project uses novel experimental techniques to investigate the role of turbulence in transporting contaminants between water and boundary sediments. This project will inform better management of waterborne contaminants with benefits for human and ecosystem health.
Related publications (20)
Hyporheic exchanges due to channel bed and width undulations
Neshat Movahedi, Amir Ahmad Dehghani, Christian Schmidt, Nico Trauth, Gregory Brian Pasternack, Michael J Stewardson, Mehdi Meftah Halghi
Riffle-pool sequences are fundamental, ubiquitous morphological features of alluvial rivers that are thoroughly studied in general..
Simulating chlorophyll-a fluorescence changing rate and phycocyanin fluorescence by using a multi-sensor system in Lake Taihu, China
Jingwei Yang, Andreas Holbach, Michael J Stewardson, Andre Wilhelms, Yanwen Qin, Binghui Zheng, Hua Zou, Boqiang Qin, Guangwei Zhu, Christian Moldaenke, Stefan Norra
Algal pollution in water sources has posed a serious problem. Estimating algal concentration in advance saves time for drinking wa..
Distribution of clay-sized sediments in streambeds and influence of fine sediment clogging on hyporheic exchange
Shivansh Shrivastava, Michael J Stewardson, Meenakshi Arora
In this work, the deposition of clay‐sized fine particles (d50 = 0.006 mm) and its subsequent influence on the dune‐induced hyporh..
Understanding streambeds as complex systems: review of multiple interacting environmental processes influencing streambed permeability
S Shrivastava, MJ Stewardson, M Arora
The permeability of sediments at the sediment–water interface is an important control on several stream ecosystem services. It is ..
Unmanned Aerial Vehicle (UAV)-Based Thermal Infra-Red (TIR) and Optical Imagery Reveals Multi-Spatial Scale Controls of Cold-Water Areas Over a Groundwater-Dominated Riverscape
R Casas-Mulet, J Pander, D Ryu, MJ Stewardson, J Geist
The forecast of warmer weather, and reduced precipitation and streamflow under climate change makes freshwater biota particularly ..
The relative contribution of near-bed vs. intragravel horizontal transport to fine sediment accumulation processes in river gravel beds
Roser Casas-Mulet, Garima Lakhanpal, Michael J Stewardson
Understanding flow-sediment interactions is important for comprehending river functioning. Fine sediment accumulation processes, i..
Key hydraulic drivers and patterns of fine sediment accumulation in gravel streambeds: A conceptual framework illustrated with a case study from the Kiewa River, Australia
R Casas-Mulet, KT Alfredsen, AH McCluskey, MJ Stewardson
Fine sediment processes in gravel beds may have significant impacts to overall river ecosystem function. In addition to gravitatio..
Flipping the thin film model: Mass transfer by hyporheic exchange in gaining and losing streams
Alexander H McCluskey, Stanley B Grant, Michael J Stewardson
The exchange of mass between a stream and its hyporheic zone, or “hyporheic exchange,” is central to many important ecosystem serv..
From Rain Tanks to Catchments: Use of Low-Impact Development To Address Hydrologic Symptoms of the Urban Stream Syndrome
Asal Askarizadeh, Megan A Rippy, Tim D Fletcher, David L Feldman, Jian Peng, Peter Bowler, Andrew S Mehring, Brandon K Winfrey, Jasper A Vrugt, Amir AghaKouchak, Sunny C Jiang, Brett F Sanders, Lisa A Levin, Scott Taylor, Stanley B Grant
Catchment urbanization perturbs the water and sediment budgets of streams, degrades stream health and function, and causes a const..
Bedforms as Biocatalytic Filters: A Pumping and Streamline Segregation Model for Nitrate Removal in Permeable Sediments
Morvarid Azizian, Stanley B Grant, Adam J Kessler, Perran LM Cook, Megan A Rippy, Michael J Stewardson
Bedforms are a focal point of carbon and nitrogen cycling in streams and coastal marine ecosystems. In this paper, we develop and ..
First-Order Contaminant Removal in the Hyporheic Zone of Streams: Physical Insights from a Simple Analytical Model
Stanley B Grant, Keith Stolzenbach, Morvarid Azizian, Michael J Stewardson, Fulvio Boano, Laura Bardini
A simple analytical model is presented for the removal of stream-borne contaminants by hyporheic exchange across duned or rippled ..