Article
Oceanography
Preston Spicer, Kelly L. Cole, Kimberly Huguenard, Daniel G. MacDonald, Michael M. Whitney
Summary: The study investigates the impact of different mixing mechanisms on the energy budget of an idealized tidally pulsed river plume. Results show that tidal mixing can dominate the energy budget under certain conditions, while interfacial mixing and frontal mixing also contribute differently in various events.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Marine & Freshwater Biology
Franklin M. Arevalo, Oscar Alvarez-Silva, Alejandro Caceres-Euse, Yuley Cardona
Summary: This study analyzed the hydrodynamic structure of the Magdalena River estuary and plume, and found that mixing in the system is mainly controlled by turbulence at the pycnocline. The study also found that the mixing is more intense during high discharge scenarios compared to low discharge scenarios.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Oceanography
Preston Spicer, Kelly L. Coles, Kimberly Huguenard, Daniel G. MacDonald, Michael M. Whitney
Summary: This study examines the influence of variable winds on mixing in river plumes. The results show that moderate northward winds can effectively decrease stratification and enhance advection and dissipation in the plume.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Michael M. Whitney, Yan Jia, Kelly L. Cole, Daniel G. MacDonald, Kimberly D. Huguenard
Summary: The study investigates the interaction between the Connecticut River plume and the tidal currents in Long Island Sound. It shows that the composition and distribution of the plume is significantly influenced by the source waters, bounding plume fronts, and dissolution processes in energetic tidal environments.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Berengere S. Dejeans, Julia C. Mullarney, Iain T. MacDonald
Summary: The study examines velocity and turbulence patterns in a sediment-laden river, revealing deficiencies in model performance in simulating turbulent kinetic energy dissipation rates, particularly around river bends. Results indicate that turbulence distributions show larger variations vertically than longitudinally, with the river's bathymetry and geometry playing a key role in controlling turbulence structure.
WATER RESOURCES RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Valentin Vallaeys, Jonathan Lambrechts, Philippe Delandmeter, Johannes Patsch, Alejandro Spitzy, Emmanuel Hanert, Eric Deleersnijder
Summary: The Congo River estuary features a deep canyon connecting it to the deep ocean, influenced by high river discharge and micro-tidal conditions. The dynamics of the estuary are well simulated using the SLIM 3D model, showing a two-layer flow and making it an outlier in estuarine classifications. The spatial variability of estuarine waters ventilation and the hypoxic/anoxic conditions at the submarine canyon bottom are explained by the model results.
Article
Mechanics
Harish N. N. Mirajkar, Partho Mukherjee, Sridhar Balasubramanian
Summary: In this study, the mean flow and turbulence characteristics of a buoyant jet in a linearly stratified ambient are investigated. Experimental measurements of velocity and density fields are carried out using particle image velocimetry and planar laser-induced fluorescence. The results reveal different flow regimes and provide a comprehensive understanding of the flow dynamics.
Article
Environmental Sciences
Alexander Osadchiev, Alexandra Gordey, Alexandra Barymova, Roman Sedakov, Vladimir Rogozhin, Roman Zhiba, Roman Dbar
Summary: This study focuses on the instabilities at the interfaces between small river plumes and ambient seawater. High-resolution aerial remote sensing and in situ measurements are used to examine these instabilities. Both Rayleigh-Taylor and Kelvin-Helmholtz instabilities are observed, inducing mass transport and modifying the salinity structure and mixing at the plume-sea interfaces. Additionally, wind-driven Stokes transport affects the spread of river-borne floating particles.
Article
Environmental Sciences
Rebecca A. McPherson, Craig L. Stevens, Joanne M. O'Callaghan, Andrew J. Lucas, Jonathan D. Nash
Summary: Observations from a fast-flowing buoyant river plume in New Zealand showed that lateral spreading of the plume was driven by strong stratification and enhanced shear, with estimates derived from different methods yielding varying results. Surface drifters underestimated spreading rates, likely due to convergence of near-surface flow. Horizontal shear dispersion was identified as the dominant mechanism of dispersion, influencing spreading in the surface plume layer.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Thermodynamics
Alexey N. Volkov, Zhibin Lin
Summary: Based on a one-dimensional hybrid computational model, the long-term dynamics of vapor plumes induced by nanosecond laser pulses in argon background gas were numerically studied. The simulations showed that the plume dynamics can be divided into three major stages: initial inertial expansion, plume contraction, and subsequent diffusive expansion. The simulations also revealed the phenomena of plume contraction and delayed material redeposition.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Geochemistry & Geophysics
Henri Samuel, Maxim D. Ballmer, Sebastiano Padovan, Nicola Tosi, Attilio Rivoldini, Ana-Catalina Plesa
Summary: The Martian mantle likely has a compositionally distinct layer at the bottom enriched in iron and heat-producing elements which affects the thermal and chemical evolution of Mars significantly. This enriched basal layer delays deep cooling and influences many present-day characteristics of the planet. Due to its enrichment in iron and HPE, large volumes of stable melt near the core-mantle boundary may be mistaken for core material.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2021)
Article
Engineering, Multidisciplinary
Samuel Vaux, Rabah Mehaddi, Anthony Collin, Pascal Boulet
Summary: This study investigates fire plumes evolving in a two-layer stratified environment, proposing a theoretical model to determine the trapping/escaping criterion of the fire plume; the model suggests that the stratification parameter Lambda > 0.88 is crucial in determining the final state of the fire plume and allows for the analytical determination of the plume height.
Article
Oceanography
Johannes Gemmrich, Adam Monahan
Summary: The study investigates the generation of internal interface waves by surface waves in a two-layer fluid, analyzing processes such as energy transfer, spectral downshift, and wave breaking dissipation. Results show significant energy dissipation and minimal energy transfer to the interfacial wave field in the case of steep initial waves.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Geology
Philip R. Hill, D. Gwyn Lintern
Summary: This paper investigates particle settling dynamics in a tidally-influenced delta, finding that convective settling is strongly modulated by seasonal discharge and tidal cycles. Sedimentary processes show variability over timescales ranging from semi-diurnal to annual, with strong variations in current and sediment accumulation measurements noted. Acoustic Doppler Current Profiler backscatter reveals a lagged response to river discharge and significant diurnal/semi-diurnal variability.
Article
Environmental Sciences
Adolfo R. Piminchumo Sausa, Shuo Li, Nigel B. Kaye, M. R. Flynn
Summary: This study examines the relaxation process of merging plumes and finds that the shape of merging plumes tends to become circular while the volume flux takes longer to reach its self-similar value. This discrepancy is especially significant in stratified environments. The study also considers three different stratification scenarios and models the vertical evolution of the plumes. The findings highlight the challenges in extending the two-source model to situations with three or more collinear sources.
ENVIRONMENTAL FLUID MECHANICS
(2023)
Article
Oceanography
Amy F. Waterhouse, Samuel M. Kelly, Zhongxiang Zhao, Jennifer A. MacKinnon, Jonathan D. Nash, Harper Simmons, Dmitry Brahznikov, Luc Rainville, Matthew Alford, Rob Pinkel
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2018)
Article
Oceanography
Sanjiv Ramachandran, Amit Tandon, Jennifer Mackinnon, Andrew J. Lucas, Robert Pinkel, Amy F. Waterhouse, Jonathan Nash, Emily Shroyer, Amala Mahadevan, Robert A. Weller, J. Thomas Farrar
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2018)
Article
Oceanography
D. Carroll, D. A. Sutherland, B. Curry, J. D. Nash, E. L. Shroyer, G. A. Catania, L. A. Stearns, J. P. Grist, C. M. Lee, L. de Steur
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2018)
Article
Geography, Physical
Christian Kienholz, Jason M. Amundson, Roman J. Motyka, Rebecca H. Jackson, John B. Mickett, David A. Sutherland, Jonathan D. Nash, Dylan S. Winters, William P. Dryer, Martin Truffer
JOURNAL OF GLACIOLOGY
(2019)
Article
Multidisciplinary Sciences
D. A. Sutherland, R. H. Jackson, C. Kienholz, J. M. Amundson, W. P. Dryer, D. Duncan, E. F. Eidam, R. J. Motyka, J. D. Nash
Article
Oceanography
Katherine Adams, Jennifer MacKinnon, Andrew J. Lucas, Jonathan Nash, Emily Shroyer, J. Thomas Farrar
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2019)
Article
Geosciences, Multidisciplinary
R. H. Jackson, J. D. Nash, C. Kienholz, D. A. Sutherland, J. M. Amundson, R. J. Motyka, D. Winters, E. Skyllingstad, E. C. Pettit
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Geosciences, Multidisciplinary
M. J. Fried, D. Carroll, G. A. Catania, D. A. Sutherland, L. A. Stearns, E. L. Shroyer, J. D. Nash
GEOPHYSICAL RESEARCH LETTERS
(2019)
Article
Oceanography
T. M. Shaun Johnston, Jennifer A. MacKinnon, Patrick L. Colin, Patrick J. Haley, Pierre F. J. Lermusiaux, Andrew J. Lucas, Mark A. Merrifield, Sophia T. Merrifield, Chris Mirabito, Jonathan D. Nash, Celia Y. Ou, Mika Siegeiman, Eric J. Terrill, Amy F. Waterhouse
Article
Oceanography
Magdalena Andres, Mika Siegelman, Verena Hormann, Ruth C. Musgrave, Sophia T. Merrifield, Daniel L. Rudnick, Mark A. Merrifield, Matthew H. Alford, Gunnar Voet, Hemantha W. Wijesekera, Jennifer A. MacKinnon, Luca Centurioni, Jonathan D. Nash, Eric J. Terrill
Article
Oceanography
Arnaud Le Boyer, Matthew H. Alford, Robert Pinkel, Tyler D. Hennon, Yiing J. Yang, Dong Ko, Jonathan Nash
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2020)
Article
Geography, Physical
Jason M. Amundson, Christian Kienholz, Alexander O. Hager, Rebecca H. Jackson, Roman J. Motyka, Jonathan D. Nash, David A. Sutherland
JOURNAL OF GLACIOLOGY
(2020)
Article
Oceanography
Gunnar Voet, Matthew H. Alford, Jennifer A. MacKinnon, Jonathan D. Nash
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2020)
Review
Environmental Sciences
Dean Roemmich, Matthew H. Alford, Herve Claustre, Kenneth Johnson, Brian King, James Moum, Peter Oke, W. Brechner Owens, Sylvie Pouliquen, Sarah Purkey, Megan Scanderbeg, Toshio Suga, Susan Wijffels, Nathalie Zilberman, Dorothee Bakker, Molly Baringer, Mathieu Belbeoch, Henry C. Bittig, Emmanuel Boss, Paulo Calil, Fiona Carse, Thierry Carval, Fei Chai, Diarmuid O. Conchubhair, Fabrizio d'Ortenzio, Giorgio Dall'Olmo, Damien Desbruyeres, Katja Fennel, Ilker Fer, Raffaele Ferrari, Gael Forget, Howard Freeland, Tetsuichi Fujiki, Marion Gehlen, Blair Greenan, Robert Hallberg, Toshiyuki Hibiya, Shigeki Hosoda, Steven Jayne, Markus Jochum, Gregory C. Johnson, KiRyong Kang, Nicolas Kolodziejczyk, Arne Kortzinger, Pierre-Yves Le Traon, Yueng-Djern Lenn, Guillaume Maze, Kjell Arne Mork, Tamaryn Morris, Takeyoshi Nagai, Jonathan Nash, Alberto Naveira Garabato, Are Olsen, Rama Rao Pattabhi, Satya Prakash, Stephen Riser, Catherine Schmechtig, Claudia Schmid, Emily Shroyer, Andreas Sterl, Philip Sutton, Lynne Talley, Toste Tanhua, Virginie Thierry, Sandy Thomalla, John Toole, Ariel Troisi, Thomas W. Trull, Jon Turton, Pedro Joaquin Velez-Belchi, Waldemar Walczowski, Haili Wang, Rik Wanninkhof, Amy F. Waterhouse, Stephanie Waterman, Andrew Watson, Cara Wilson, Annie P. S. Wong, Jianping Xu, Ichiro Yasuda
FRONTIERS IN MARINE SCIENCE
(2019)
Article
Multidisciplinary Sciences
W. D. Smyth, J. D. Nash, J. N. Moum
SCIENTIFIC REPORTS
(2019)