Article
Environmental Sciences
Ming Liu, Yixin He, Li Cao, Yue Zhi, Xianjin He, Tao Li, Yanyan Wei, Xiaobing Yuan, Bingsheng Liu, Qiang He, Hong Li, Xiaojun Miao
Summary: This study investigates the transformation mechanisms of dissolved inorganic nitrogen (DIN) under hydrodynamic turbulence. Field investigation reveals that NH+4 concentrations are lower in flood seasons compared to drought seasons, while laboratory results demonstrate that limitation of dissolved oxygen (DO) causes inactive nitrification and active denitrification in sediment. Turbulence decreases NH4+ and NO2- concentrations, but increases NO(3 )(-)and total DIN concentrations in the overlying water.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Zexia Zhang, Kevin Flora, Seokkoo Kang, Ajay B. Limaye, Ali Khosronejad
Summary: In this study, encoder-decoder convolutional neural networks were used to predict the turbulence statistics of large-scale meandering rivers. The networks were trained on flood flow data from a large-scale river and validated on two different rivers, demonstrating their effectiveness.
WATER RESOURCES RESEARCH
(2022)
Article
Multidisciplinary Sciences
Sam Brooke, Austin J. Chadwick, Jose Silvestre, Michael P. Lamb, Douglas A. Edmonds, Vamsi Ganti
Summary: A study has found that the location of river avulsions is controlled by multiple factors, including changes in valley confinement, flow deceleration or acceleration within the backwater zone, and the extent of flood-driven erosion upstream. These findings have important implications for predicting and mitigating avulsion hazards, as well as understanding the impacts of land use and climate change.
Article
Environmental Sciences
Lan-Anh Van, Kim-Dan Nguyen, Francois Le Marrec, Aicha Jairy
Summary: This study investigates the water quality of the Seine and Marne Rivers using numerical modeling. By developing two-dimensional and three-dimensional models, the dispersion of bacterial pollutants can be accurately simulated.
Article
Environmental Sciences
Francesco Palmas, Alessandro Cau, Cinzia Podda, Alessio Musu, Melissa Serra, Antonio Pusceddu, Andrea Sabatini
Summary: This study investigated the occurrence and distribution of Riverine Anthropogenic Macro-litter (RAM) in 37 river basins in Sardinia Island. The results showed that plastics, especially single-use items, were the most common and abundant RAM category. Statistical modeling revealed that the presence of lightweight RAM, particularly plastic, was mainly influenced by urban and agricultural land use, while the occurrence of heavy weighted RAM, such as large metal items and appliances, was influenced by the proximity of bridges and local population density.
ENVIRONMENTAL POLLUTION
(2022)
Editorial Material
Environmental Sciences
Joanna R. Blaszczak
Summary: Oxygen concentrations are crucial for water quality and ecosystem health. Research shows that climate change will lead to decreased oxygen levels in numerous rivers in the USA and Central Europe.
NATURE CLIMATE CHANGE
(2023)
Article
Environmental Sciences
Maciej Liro, Anna Zielonka, Tim H. M. van Emmerik
Summary: This article presents a conceptual framework for studying the fragmentation process of macroplastics in rivers. By identifying the intrinsic properties of plastic items and the extrinsic controls of river characteristics and climate, it helps us understand the fate of macroplastics in rivers and the spread of microplastics in the environment.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
John R. Gardner, Xiao Yang, Simon N. Topp, Matthew R. V. Ross, Elizabeth H. Altenau, Tamlin M. Pavelsky
Summary: RiverSR database, extracted from Landsat images spanning from 1984 to 2018, reveals that 56% of rivers in the contiguous USA are dominantly yellow and 38% are dominantly green; river color shows three distinct seasonal patterns synchronized with flow regimes; one-third of rivers have experienced significant color shifts over the past 35 years, providing new insights into macrosystems ecology of rivers.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Gerard Rocher-Ros, Emily H. Stanley, Luke C. Loken, Nora J. Casson, Peter A. Raymond, Shaoda Liu, Giuseppe Amatulli, Ryan A. Sponseller
Summary: Methane emissions from running waters account for a significant portion of global emissions and are influenced by edaphic and climate features. These emissions are not strongly temperature dependent and are characterized by large fluxes in different environments.
News Item
Geosciences, Multidisciplinary
William Ford, James Fox
Summary: The fate of sedimentary carbon in rivers is determined by a combination of mineral protection and transit time. Biogeochemical transformations along the journey control whether carbon is buried or returned to the atmosphere as CO2.
Article
Environmental Sciences
R. J. Batalla, C. N. Gibbins, A. Alcazar, J. Brasington, C. Buendia, C. Garcia, M. Llena, R. Lopez, A. Palau, C. Rennie, J. M. Wheaton, D. Vericat
Summary: Hydropower is a renewable form of energy production, but can have negative impacts on river ecosystems. With increasing global demand for renewables, finding ways to minimize the impacts of hydropower on rivers is crucial. Studying the relationship between hydropeaking flow regimes and sediment dynamics can provide insights into the mechanisms behind ecological changes.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Engineering, Civil
Lauren E. E. Schwab, Chris R. R. Rehmann
Summary: An expression for the transverse mixing coefficient in a rectangular channel is derived to evaluate the importance of transverse turbulent diffusion. Both vertical and transverse turbulent diffusion contribute appreciably to transverse shear dispersion, and the direct contribution of transverse turbulent diffusion to transverse mixing is important for a range of conditions commonly observed in natural channels. A comparison of predicted and measured transverse mixing coefficients supports including turbulent diffusion in analyses of transverse mixing - both in its effect on shear dispersion and as a direct mechanism of transport.
JOURNAL OF HYDRAULIC RESEARCH
(2023)
Article
Mechanics
Axel Brandenburg, Upasana Das
Summary: The text discusses radiation transport, turbulence effects, and temperature perturbations in stellar atmospheres at different optical thicknesses. It was found that the turbulent decay rate increases with wavenumber, but to a lesser extent than turbulent diffusion. In the presence of turbulence, the cooling time is comparable to the turbulent turnover time.
Editorial Material
Environmental Sciences
Breanna L. Zavadoff
Summary: New research shows the balancing effects of aerosols and greenhouse gases on atmospheric rivers, indicating a shift towards stronger atmospheric rivers in the coming decades.
NATURE CLIMATE CHANGE
(2021)
Article
Environmental Sciences
Wei Zhi, Christoph Klingler, Jiangtao Liu, Li Li
Summary: This study reconstructed daily water temperature and dissolved oxygen in rivers across the United States and Central Europe using a deep learning model. The results showed that a majority of the rivers experienced persistent warming and deoxygenation, with urban rivers exhibiting the most rapid warming and agricultural rivers experiencing the slowest warming but fastest deoxygenation.
NATURE CLIMATE CHANGE
(2023)
Article
Environmental Sciences
Valery E. Forbes, Chris J. Salice, Bjorn Birnir, Randy J. F. Bruins, Peter Calow, Virginie Ducrot, Nika Galic, Kristina Garber, Bret C. Harvey, Henriette Jager, Andrew Kanarek, Robert Pastorok, Steve F. Railsback, Richard Rebarber, Pernille Thorbek
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2017)
Article
Engineering, Multidisciplinary
Bjoern Birnir, Baldvin Einarsson, Luis L. Bonilla, Jorge Cornejo-Donoso
INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
(2017)
Article
Geosciences, Multidisciplinary
David Cattan, Bjorn Birnir
MATHEMATICAL GEOSCIENCES
(2017)
Article
Mathematics, Applied
Jonathan Essen, Miguel Ruiz-Garcia, Ian Jenkins, Manuel Carretero, Luis L. Bonilla, Bjorn Birnir
Article
Mathematics, Applied
Bjorn Birnir, Ana Carpio, Elena Cebrian, Perfecto Vidal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2018)
Article
Multidisciplinary Sciences
Jorge Cornejo-Donoso, Baldvin Einarsson, Bjorn Birnir, Steven D. Gaines
Article
Environmental Sciences
Valery E. Forbes, Steve Railsback, Chiara Accolla, Bjorn Birnir, Randall J. F. Bruins, Virginie Ducrot, Nika Galic, Kristina Garber, Bret C. Harvey, Henriette Jager, Andrew Kanarek, Robert Pastorok, Richard Rebarber, Pernille Thorbek, Chris J. Salice
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Editorial Material
Engineering, Mechanical
Jan Awrejcewicz, Bjorn Birnir, Miguel A. F. Sanjuan
NONLINEAR DYNAMICS
(2019)
Article
Environmental Sciences
Nika Galic, Chris J. Salice, Bjorn Birnir, Randall J. F. Bruins, Virginie Ducrot, Henriette I. Jager, Andrew Kanarek, Robert Pastorok, Richard Rebarber, Pernille Thorbek, Valery E. Forbes
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Mathematics, Applied
John Kaminsky, Bjorn Birnir, Gregory P. Bewley, Michael Sinhuber
JOURNAL OF NONLINEAR SCIENCE
(2020)
Article
Biology
Angela Peace, Paul C. Frost, Nicole D. Wagner, Michael Danger, Chiara Accolla, Philipp Antczak, Bryan W. Brooks, David M. Costello, Rebecca A. Everett, Kevin B. Flores, Christopher M. Heggerud, Roxanne Karimi, Yun Kang, Yang Kuang, James H. Larson, Teresa Mathews, Gregory D. Mayer, Justin N. Murdock, Cheryl A. Murphy, Roger M. Nisbet, Laure Pecquerie, Nathan Pollesch, Erica M. Rutter, Kimberly L. Schulz, J. Thad Scott, Louise Stevenson, Hao Wang
Summary: The article emphasizes the opportunity to link ecological stoichiometry theory with ecotoxicological questions, introducing stoichiometric ecotoxicology as a subfield that examines how contaminant stress, nutrient supply, and elemental constraints interact across all levels of biological organization.
Article
Physics, Fluids & Plasmas
John Kaminsky, Joe Klewicki, Bjorn Birnir
Proceedings Paper
Nanoscience & Nanotechnology
Bjorn Birnir
COUPLED MATHEMATICAL MODELS FOR PHYSICAL AND BIOLOGICAL NANOSCALE SYSTEMS AND THEIR APPLICATIONS
(2018)
Article
Engineering, Multidisciplinary
Bjorn Birnir
APPLIED MATHEMATICAL MODELLING
(2017)
Article
Materials Science, Multidisciplinary
M. Ruiz-Garcia, J. Essen, M. Carretero, L. L. Bonilla, B. Birnir
