Article
Geosciences, Multidisciplinary
Esmee M. van Wijk, Stephen R. Rintoul, Luke O. Wallace, Natalia Ribeiro, Laura Herraiz-Borreguero
Summary: The Denman Glacier, a major ice river in East Antarctica, has the potential to contribute significantly to global sea level rise due to its large ice volume. Recent observations suggest that warm ocean water is reaching deep troughs beneath the glacier, potentially causing unstable retreat and melting of the ice from below. These findings highlight the vulnerability of the Denman Glacier to climate change and the importance of understanding the dynamics of warm water intrusion in the region.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Oceanography
Johannes Becherer, James N. Moum, Joseph Calantoni, John A. Colosi, John A. Barth, James A. Lerczak, Jacqueline M. McSweeney, Jennifer A. MacKinnon, Amy F. Waterhouse
Summary: The study found that the internal tide energy flux decreases shoreward and becomes increasingly correlated with stratification and turbulence dissipation rate.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Oceanography
Steven J. Lentz
Summary: The characteristics and dynamics of depth-average along-shelf currents at monthly and longer time scales were studied using 17 years of observations from the Martha's Vineyard Coastal Observatory on the southern New England inner shelf. The results showed that the depth-averaged along-shelf current is almost always westward and stronger in summer than in winter. The annual cycle and variations around the annual cycle are primarily driven by the along-shelf wind stress. The wind stress is opposed by a pressure gradient that sets up along the southern New England shelf and a surface gravity wave-enhanced bottom stress.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Oceanography
Matthew S. Spydell, Falk Feddersen, Jamie Macmahan
Summary: Studies have found that oceanographic relative dispersion generally follows Richardson-Obukhov or enstrophy cascade scaling. Experimentation with GPS-equipped surface drifters revealed that perturbation dispersion initially conforms to Batchelor scaling in short times, but transitions to Richardson-Obukhov scaling with longer times.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Engineering, Marine
Marcus Sobarzo, Camila Soto-Riquelme, Raul P. Flores, Gonzalo S. Saldias
Summary: The response of inner shelf circulation and bottom temperature variability to synoptic wind forcing and freshwater outflow was evaluated in an area with a wide continental shelf off central Chile. The study found that the forced circulation in the coastal zone with multiple river outflows and high biological productivity has a strong seasonal evolution from upwelling- to downwelling-favorable conditions. The wind forcing dominated during summer when the river discharge was minimum, whereas the importance of freshwater outflow became dominant in winter in conjunction with southward wind events.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Oceanography
Paulo Victor Lisboa, Elisa H. Fernandes, Aldo Sottolichio, Nicolas Huybrechts, Antonio Raylton Rodrigues Bendo, Juliana Costi
Summary: This study aims to improve the understanding of sediment transport and depositional processes in the Southwest Atlantic Inner Shelf. The analysis of an 8-year period revealed that deposition mostly exceeded erosion in the south of the Patos Lagoon mouth and resulted in positive bottom evolution, while erosion exceeded deposition to the north of the mouth, resulting in negative bottom evolution. The study also found that fluvial discharge and wind action influenced the variability of depositional processes, and ENSO events had pronounced effects on deposition off Rio de la Plata.
CONTINENTAL SHELF RESEARCH
(2023)
Article
Mechanics
Akash Unnikrishnan, Shantanu Shahane, Vinod Narayanan, Surya Pratap Vanka
Summary: This paper studies the shear-driven flow between a rotating cylinder and a stationary elliptical enclosure. Using a meshless method, the two-dimensional time-dependent Navier-Stokes equations are solved, with interpolations done using polyharmonic spline radial basis functions. The fluid flow is analyzed for different aspect ratios of the ellipse and eccentric placements of the inner cylinder. The formation of Moffatt-like vortices in the wide-gap region of the model is observed, and benchmark data are provided for various simulated cases.
Article
Oceanography
M. Andres, M. Muglia, H. Seim, J. Bane, D. Savidge
Summary: This article examines the impact of the Gulf Stream on the exchange of waters between the open ocean and the shelf, based on observations from instruments deployed in the South Atlantic Bight. The study finds that the position and transport of the Gulf Stream control the along-slope flow along the continental slope, and there is a wave-like meander influence on the shelf-edge currents in a specific frequency band.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Geosciences, Multidisciplinary
Francesco de Mendoza, Katrin Schroeder, Leonardo Langone, Jacopo Chiggiato, Mireno Borghini, Patrizia Giordano, Giulio Verazzo, Stefano Miserocchi
Summary: This work presents an 8-year dataset of monitoring activities conducted on the western margin of the southern Adriatic Sea. The dataset includes measurements of hydrodynamics and thermohaline properties of the water column. The data serve as the starting point for continuous observation of deep-water dynamics and are publicly available and compliant with FAIR principles.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Oceanography
Madeleine M. Hamann, Matthew H. Alford, Andrew J. Lucas, Amy F. Waterhouse, Gunnar Voet
Summary: The study on La Jolla Canyon System (LJCS) reveals that internal tides mainly dissipate within the canyon system instead of leaking over the sidewalls or siphoning energy to other wave frequencies. The mode-1 tide shows partly standing characteristics, while modes 2-5 exhibit progressive features.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Oceanography
Hilde Oliver, Weifeng Gordon Zhang, Kevin M. Archibald, Andrew J. Hirzel, Walker O. Smith, Heidi M. Sosik, Rachel H. R. Stanley, Dennis J. McGillicuddy
Summary: This study investigates the characteristics of chlorophyll concentrations at the shelf break of the Mid-Atlantic Bight region. The enhanced chlorophyll concentrations occur primarily in spring and are driven by Ekman restratification driven by upfront winds.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Yidongfang Si, Andrew L. Stewart, Ian Eisenman
Summary: The Antarctic Slope Current (ASC) plays a crucial role in redistributing water masses, sea ice, and tracer properties in the Antarctic margins. Recent studies have found that mesoscale eddies and tidal flows are important for momentum transfers in the ASC. Sea ice redistributes wind stress away from the continental slope, resulting in similar sea ice and ocean surface flows in the core of the ASC. Tidal forcing exaggerates this effect and may lead to momentum transfer from the ocean to sea ice.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Physics, Multidisciplinary
A. M. Saunders, C. Stan, K. K. Mackay, B. Morgan, J. A. K. Horwitz, S. J. Ali, H. G. Rinderknecht, T. Haxhimali, Y. Ping, F. Najjar, J. Eggert, H-S Park
Summary: Studying high-velocity particle-laden flow interactions is crucial for understanding natural phenomena, but experimental observations are limited. Observing interactions of ejecta microjets provides a new method to study particle streams.
PHYSICAL REVIEW LETTERS
(2021)
Article
Oceanography
Nicolas Bodnariuk, Claudia G. Simionato, Martin Saraceno
Summary: This study analyzed the interannual variability of the Southwestern Atlantic Continental Shelf circulation and its thermohaline structure using global ocean reanalysis ORAP5.0. The research found a significant correlation between the first mode of the atmosphere's interannual variability in the Southern Hemisphere and the first mode of sea surface temperature, sea surface salinity, and horizontally averaged velocities. The study revealed that anomalies in current development and changes in circulation and heat surface fluxes drive sea surface temperature and salinity anomalies in the study area.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Environmental Sciences
Giuliana Berden, Alberto R. Piola, Elbio D. Palma
Summary: This study analyzes the cross-shelf exchanges between the Southwestern Atlantic shelf and the open ocean from 30 to 40 degrees S using a high-resolution ocean model. The study finds that the exchanges mainly occur near the Brazil-Malvinas Confluence and 32 degrees S. The cross-shelf flow shows weak seasonal variations but high variability at subannual and weekly time scales.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Chelle L. Gentemann, Melanie R. Fewings, Marisol Garcia-Reyes
GEOPHYSICAL RESEARCH LETTERS
(2017)
Article
Meteorology & Atmospheric Sciences
Melanie R. Fewings
MONTHLY WEATHER REVIEW
(2017)
Article
Oceanography
Kayla R. Flynn, Melanie R. Fewings, Christopher Gotschalk, Kelly Lombardo
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2017)
Article
Oceanography
Cara C. Manning, Rachel H. R. Stanley, David P. Nicholson, Jason M. Smith, J. Timothy Pennington, Melanie R. Fewings, Michael E. Squibb, Francisco P. Chavez
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2017)
Article
Oceanography
Maria F. Aristizabal, Melanie R. Fewings, Libe Washburn
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2017)
Article
Oceanography
M. C. Fogarty, M. R. Fewings, A. C. Paget, H. M. Dierssen
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2018)
Article
Fisheries
Rebecca A. Howard, Lorenzo Ciannelli, W. Waldo Wakefield, Melanie R. Fewings
Summary: The study utilized NOAA Fisheries' bottom trawl survey data to analyze changes in groundfish assemblage composition over the last four decades in the northern California Current ecosystem. Factors such as grain size, species richness, and diversity were found to be associated with assemblage composition, with bottom temperature, sediment characteristics, and depth correlated to abundance for different species. This suggests significant spatiotemporal changes in the shelf groundfish populations, with recent reductions in presence of hypoxia-intolerant species.
FISHERIES OCEANOGRAPHY
(2021)
Article
Oceanography
Jacqueline M. McSweeney, Melanie R. Fewings, James A. Lerczak, John A. Barth
Summary: This study examines the propagation of a buoyant plume along the central California coast following a wind relaxation event in October 2017. Using data from moorings, the researchers tracked the evolution of the plume's temperature and velocity, observing changes in temperature, flow speed, and shelf stratification.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Multidisciplinary Sciences
Craig M. Risien, Melanie R. Fewings, Jennifer L. Fisher, Jay O. Peterson, Cheryl A. Morgan
Summary: This article describes a series of hydrographic data collected along the Newport Hydrographic Line in western Oregon, which is crucial for understanding the relationship between ocean-climate changes and ecosystem structure and function on the continental shelf.
Review
Geochemistry & Geophysics
Melissa Moulton, Sutara H. Suanda, Jessica C. Garwood, Nirnimesh Kumar, Melanie R. Fewings, James M. Pringle
Summary: The exchange of material in the nearshore region, from the shoreline to a few kilometers offshore, plays a crucial role in determining the concentrations of pathogens and nutrients near the coast, as well as the transport of larvae. Various cross-shore exchange mechanisms, such as winds, currents, and waves, can influence this process. A framework has been developed to estimate the relative importance of these mechanisms and determine their impact on particle behavior.
ANNUAL REVIEW OF MARINE SCIENCE
(2023)
Article
Oceanography
Kylene M. Cooley, Melanie R. Fewings, James A. Lerczak, Larry W. O'Neill, Kevin S. Brown
Summary: In this study, anomalously warm sea surface temperature (SST) events near Punta Lavapie in the central Chile-Peru Current System during 1980-2019 were identified. These warm events mostly occurred in the austral summer and had large spatial scales. Analysis showed that the net surface heat flux anomaly is not sufficient to explain the anomalous warming, while changes in surface wind stress may contribute to reduced upwelling and mixed-layer shoaling.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Multidisciplinary Sciences
Craig M. Risien, Brandy T. Cervantes, Melanie R. Fewings, John A. Barth, Michael Kosro
Summary: This study conducted long-term observations and research on the northern California Current and the Oregon continental shelf, which revealed understanding of oceanic processes, including coastal trapped waves, seasonal upwelling and downwelling in eastern boundary upwelling systems, and seasonal variability of coastal currents.
Article
Environmental Sciences
Melanie R. Fewings, Kevin S. Brown
FRONTIERS IN MARINE SCIENCE
(2019)
Review
Environmental Sciences
Mark A. Bourassa, Thomas Meissner, Ivana Cerovecki, Paul S. Chang, Xiaolong Dong, Giovanna De Chiara, Craig Donlon, Dmitry S. Dukhovskoy, Jocelyn Elya, Alexander Fore, Melanie R. Fewings, Ralph C. Foster, Sarah T. Gille, Brian K. Haus, Svetla Hristova-Veleva, Heather M. Holbach, Zorana Jelenak, John A. Knaff, Sven A. Kranz, Andrew Manaster, Matthew Mazloff, Carl Mears, Alexis Mouche, Marcos Portabella, Nicolas Reul, Lucrezia Ricciardulli, Ernesto Rodriguez, Charles Sampson, Daniel Solis, Ad Stoffelen, Michael R. Stukel, Bryan Stiles, David Weissman, Frank Wentz
FRONTIERS IN MARINE SCIENCE
(2019)
Review
Environmental Sciences
Ana B. Villas Boas, Fabrice Ardhuin, Alex Ayet, Mark A. Bourassa, Peter Brandt, Betrand Chapron, Bruce D. Cornuelle, J. T. Farrar, Melanie R. Fewings, Baylor Fox-Kemper, Sarah T. Gille, Christine Gommenginger, Patrick Heimbach, Momme C. Hell, Qing Li, Matthew R. Mazloff, Sophia T. Merrifield, Alexis Mouche, Marie H. Rio, Ernesto Rodriguez, Jamie D. Shutler, Aneesh C. Subramanian, Eric J. Terrill, Michel Tsamados, Clement Ubelmann, Erik van Sebille
FRONTIERS IN MARINE SCIENCE
(2019)