Article
Environmental Sciences
Rene Friedland, Diego Macias, Gianpiero Cossarini, Ute Daewel, Claude Estournel, Elisa Garcia-Gorriz, Bruna Grizzetti, Marilaure Gregoire, Bo Gustafson, Sofia Kalaroni, Onur Kerimoglu, Paolo Lazzari, Hermann Lenhart, Gennadi Lessin, Ilja Maljutenko, Svetla Miladinova, Barbel Mueller-Karulis, Thomas Neumann, Ove Parn, Johannes Paetsch, Chiara Piroddi, Urmas Raudsepp, Corinna Schrum, Christoph Stegert, Adolf Stips, Kostas Tsiaras, Caroline Ulses, Luc Vandenbulcke
Summary: A novel pan-European marine model ensemble was established to assess the impacts of riverine nutrient reduction scenarios on marine eutrophication indicators. The ensemble showed consistent reductions in nutrient concentrations in most marine regions, with improvements in core indicators such as chlorophyll-a and bottom oxygen. However, there were regional variations in responses to nutrient input reductions, highlighting the need for improved management practices in river catchments to reduce marine eutrophication.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Lisa Weiss, Wolfgang Ludwig, Serge Heussner, Miguel Canals, Jean-Francois Ghiglione, Claude Estournel, Mel Constant, Philippe Kerherve
Summary: Research shows that the amount of microplastics discharged by rivers has been overestimated by two to three orders of magnitude, leading to a significant reduction in the theoretical need for a missing sink that could explain the rapid removal of plastics from the ocean surface.
Article
Ecology
Violaine Piton, Marine Herrmann, Patrick Marsaleix, Thomas Duhaut, Trinh Bich Ngoc, Manh Cuong Tran, Kipp Shearman, Sylvain Ouillon
Summary: This study investigates the seasonal variability of the circulation in the Gulf of Tonkin (GoT) through numerical simulations and data evaluation. It identifies the characteristics of circulation in different seasons, including the cyclonic and anticyclonic surface circulation, as well as the impact of typhoons on the seasonal circulation in the GoT.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Oceanography
Mathieu Gentil, Claude Estournel, Xavier Durrieu de Madron, Gael Many, Travis Miles, Patrick Marsaleix, Serge Berne, Francois Bourrin
Summary: Describing and quantifying storm-induced sediment dynamics is crucial for understanding the role of sediments in marine ecosystems, nutrient cycling, and pollution dispersion. However, studying sediment dynamics during storms is challenging due to limited sampling. This study used an active acoustic glider and numerical models to quantify sediment dynamics over the Gulf of Lions' shelf during a storm. The results highlight the importance of wave forcing on sediment resuspension and suggest the presence of sediment transfer along the shelf.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Oceanography
Manh Cuong Tran, Alexei Sentchev, Stefano Berti, Nadia K. Ayoub, Tung Nguyen-Duy, Nguyen Kim Cuong
Summary: Particle pair statistics from synthetic drifter trajectories and numerical simulations were used to investigate dispersion properties in the Gulf of Tonkin. The study revealed that dispersion in the Gulf of Tonkin follows predictions from two-dimensional turbulence theory, with both local and non-local dispersion observed at different scales.
CONTINENTAL SHELF RESEARCH
(2022)
Review
Oceanography
Carlos Dominguez-Carrio, Joan Lluis Riera, Katleen Robert, Mikel Zabala, Susana Requena, Andrea Gori, Covadonga Orejas, Claudio Lo Iacono, Claude Estournel, Guillem Corbera, Stefano Ambroso, Maria Jesus Uriz, Pablo J. Lopez-Gonzalez, Rafael Sarda, Josep-Maria Gili
Summary: This study provides a detailed characterization of the continental shelf and submarine canyon off Cap de Creus in the NW Mediterranean. The underwater video transects reveal the composition and structure of various benthic communities, including coral gardens, sea pen and soft coral assemblages, and dense beds of crinoids and sponges. The study also highlights the importance of effective management actions to protect the unique benthic fauna in this area, considering the anthropogenic pressures it faces.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Oceanography
Simon Barbot, Marion Lagarde, Florent Lyard, Patrick Marsaleix, Pascale Lherminier, Catherine Jeandel
Summary: This study provides new insights into the interpretation of GEOVIDE particle measurements, identifying potential resuspension sites caused by internal tides along the western Iberian shelf slope. The study uses a regional model and reanalysis method to determine the transport pathways for particles from the resuspension sites to the GEOVIDE stations. It highlights the importance of using a numerical tidal model to accurately identify resuspension sites, as the commonly used bathymetry slope method is not sufficient.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Marine Fourrier, Laurent Coppola, Fabrizio D'Ortenzio, Christophe Migon, Jean-Pierre Gattuso
Summary: Using Argo floats, the study reconstructed the dissolved oxygen dynamics in the Gulf of Lion and the Ligurian Sea. The two areas showed different responses to mixing events, with an overall increase in nutrients and a slowdown in acidification trends.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Review
Oceanography
Claude Estournel, Guillaume Mikolajczak, Caroline Ulses, Francois Bourrin, Miquel Canals, Sabine Charmasson, David Doxaran, Thomas Duhaut, Xavier Durrieu de Madron, Patrick Marsaleix, Albert Palanques, Pere Puig, Olivier Radakovitch, Anna Sanchez-Vidal, Romaric Verney
Summary: A simulation was conducted to study sediment transport, erosion and deposition in the Gulf of Lion. The simulation compared simulated and observed data to assess reliability. The results showed sediment accumulation near the Rhone River mouth, accretion along the mid-shelf mud belt, and the impact of dense shelf water cascading on sediment resuspension and erosion. The study found an unbalanced sedimentary system with a deficit mainly over the inner shelf due to reduced inputs from the Rhone River.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Meteorology & Atmospheric Sciences
Thai To Duy, Marine Herrmann, Claude Estournel, Patrick Marsaleix, Thomas Duhaut, Long Bui Hong, Ngoc Trinh Bich
Summary: The study investigates the variability of the South Vietnam Upwelling (SVU) in the South China Sea and identifies the role of wind intensity, cyclonic circulation, and other factors in driving the interannual variability of the upwelling intensity. The study also reveals the development of upwelling off the Sunda Shelf and confirms the previously known development areas in the southern and northern coastal regions.
Article
Ecology
Gael Many, Caroline Ulses, Claude Estournel, Patrick Marsaleix
Summary: The research used a coupled hydrodynamic-biogeochemical model to study the dynamics of particulate organic carbon on the Gulf of Lion shelf, showing that primary production and organic carbon deposition are influenced by inputs from land and nearby ocean currents.
Article
Physics, Fluids & Plasmas
Anthony Bosse, Pierre Testor, Pierre Damien, Claude Estournel, Patrick Marsaleix, Laurent Mortier, Louis Prieur, Vincent Taillandier
Summary: During the winters from 2009 to 2013, important vertical movements and symmetric instability were observed around the deep convection area in the northwestern Mediterranean Sea, related to potential vorticity dynamics. These phenomena play a significant role in the ventilation of intermediate layers, phytoplankton growth, and carbon export.
Review
Meteorology & Atmospheric Sciences
Wei Zhang, Yu Sun, Yapeng Wu, Junyu Dong, Xiaojiang Song, Zhiyi Gao, Renbo Pang, Boyu Guoan
Summary: This study employed a spatiotemporal deep-learning method to correct biases in numerical ocean wave forecasts. By using a correction model driven by both wave and wind fields and a novel pixel-switch loss function, the corrected results performed well in different seasons and improved the accuracy of the original forecasts.
