Article
Geosciences, Multidisciplinary
Mark G. Rowan
Summary: This study uses 3-D, depth-migrated seismic data to analyze the structural architecture and evolution of eastern Mississippi Canyon in the northeastern Gulf of Mexico. The study finds that the movement of salt in this area was driven by a combination of gravity and differential loading forces, which varied in importance and direction over time. These findings are significant for understanding the more complex structures and evolution of the northern Gulf of Mexico.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Ecology
Le Zhang, Z. George Xue
Summary: Coupled physical-biogeochemical models can bridge the spatial and temporal gap in ocean carbon observations. In this study, a coupled model was applied to the Gulf of Mexico, providing a high-resolution hindcast and evaluating model performance against observations. The results highlight the importance of the northern Gulf of Mexico as a carbon sink and the seasonal variability of carbon sources and sinks in the open Gulf.
Article
Geosciences, Multidisciplinary
Fabian A. Gomez, Rik Wanninkhof, Leticia Barbero, Sang-Ki Lee
Summary: This study used an ocean-biogeochemical model to assess the spatiotemporal patterns of ocean acidification in the Gulf of Mexico from 1981 to 2014. The findings show that alkalinity from the Mississippi-Atchafalaya River System counteracted the progression of ocean acidification.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
M. Bilskie, D. Del Angel, D. Yoskowitz, S. C. Hagen
Summary: This study quantifies the impacts of sea level rise on coastal communities using a high-resolution modeling framework, taking into account future sea levels, landscape change, and urbanization. The results show that the increase in sea level leads to an increase in building damage and displaced populations.
Article
Environmental Sciences
Guangpeng Liu, Annalisa Bracco, Daoxun Sun
Summary: This study investigates the three-dimensional transport and pathway structure of river runoff offshore the continental shelf in the Gulf of Mexico. The results show that the southward offshore transport of river runoff is driven by the largest mesoscale circulations in the basin, and is active in both summer and winter. The study also finds that submesoscale motions slightly enhance the spread of freshwater plumes in summer but have negligible or negative contribution in winter. The differences in freshwater distribution and transport volume among simulations are small.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Yousria S. Soliman, Gilbert T. Rowe, Mary Wicksten, Chih-Lin Wei
Summary: The diversity and distribution of amphipod crustaceans in the Mississippi Canyon were studied. The canyon was found to have higher species richness compared to the adjacent slope, likely due to greater topographic complexity and organic detritus flux from the continental shelf. However, the head of the canyon had lower species diversity.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Forestry
Daniel J. King, Grant L. Harley, Justin T. Maxwell, Karen J. Heeter, Benjamin J. Vandermyde, Robert J. Cosgriff
Summary: Floodplain hardwood forests along the Upper Mississippi River System are ecologically important due to high biodiversity, but recent decline and regeneration failure of hard mast species may lead to loss of diversity. Factors influencing the decline and regeneration failure of Carya illinoinensis are linked to large-scale flood events, climate variability, and anthropogenic impacts, requiring direct forest restoration techniques for species recovery.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Geochemistry & Geophysics
Segun B. Adebayo, Minming Cui, Thomas J. Williams, Ellen Martin, Karen H. Johannesson
Summary: This study conducted a closed-system batch reaction experiment to evaluate the effects of interaction between Gulf of Mexico seawater and Mississippi River sediments on dissolved rare earth elements (REE) concentrations and neodymium isotopic compositions (eNd). The results showed that the dissolution of labile phases of the river sediments significantly increased the dissolved REE concentrations in seawater, while secondary mineral precipitation lowered the concentrations. The study also highlighted the importance of river sediments in influencing REEs and eNd in seawater along continental margins.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Environmental Sciences
Robert L. Iles, Nan D. Walker, John R. White, Robert Rohli
Summary: MODIS satellite imagery and in situ water measurements were used to quantify inorganic sediment concentration (ISC) and track sediment plume motion during the 2016 Mississippi River diversion in Louisiana. Results showed a correlation between sediment plume distribution and BCS discharge rate, with wind direction playing a role post-diversion closure. The study provides valuable insight for future research on the impact of freshwater diversions on coastal and estuarine processes sensitive to sediment influx.
ESTUARIES AND COASTS
(2021)
Article
Environmental Sciences
Neeharika Verma, Steven Lohrenz, Sumit Chakraborty, Cedric G. Fichot
Summary: The study reveals the presence of localized regions with dominant picophytoplankton communities in the Mississippi and Atchafalaya river plumes, contrasting with areas where larger microphytoplankton dominate. High spectral observations are shown to provide insights into small-scale physical-biological dynamics in optically complex coastal waters.
Article
Green & Sustainable Science & Technology
Douglas A. A. Edmonds, Stephan C. C. Toby, Christopher G. G. Siverd, Robert Twilley, Samuel J. J. Bentley, Scott Hagen, Kehui Xu
Summary: Land loss in the Mississippi River Delta is caused by human activities that alter sediment budget, including dam building, levee construction, and subsurface resource extraction. A numerical model analysis reveals that the installation of flood-protection levees and the extraction of subsurface resources have been the primary drivers of land loss in the Barataria Basin within the delta. Additionally, the impact of dams on sediment supply reduction may not be as detrimental to sediment diversions and coastal restoration as previously thought.
NATURE SUSTAINABILITY
(2023)
Article
Environmental Sciences
Zhenwei Wu, Songjie He, Yi-Jun Xu
Summary: In this study, the concentration of metals in the lower Calcasieu River in southwestern Louisiana was analyzed. It was found that metals such as aluminum, arsenic, boron, calcium, and iron had high concentrations, and the concentrations of lithium and boron increased significantly, possibly due to anthropogenic influence. Factors such as salinity, pH, total suspended solids, and temperature were found to affect the metal concentrations. Further investigation on sediment metals and their impact on surface water could provide insights into the sources and potential effects of metal pollution on coastal aquatic ecosystems.
Article
Multidisciplinary Sciences
Lixin Qu, Leif N. Thomas, Aaron F. Wienkers, Robert D. Hetland, Daijiro Kobashi, John R. Taylor, Fucent Hsuan Wei Hsu, Jennifer A. MacKinnon, R. Kipp Shearman, Jonathan D. Nash
Summary: This study reveals that the summer land-sea breeze interacts with the river plume fronts in the northern Gulf of Mexico, leading to rapid vertical exchange and ventilation, which may impact the dynamics of the region's dead zone.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Chuanmin Hu, Lin Qi, Menghua Wang, Young-Je Park
Summary: Remote sensing and spectroscopy techniques were used to detect and quantify floating debris after Hurricane Katrina, providing a way for post-hurricane environmental assessment. Satellite images and imaging spectroscopy revealed the distribution and types of debris in the northern Gulf of Mexico, suggesting it was mainly composed of driftwood and dead plants mixed with plastics and other materials. The maximal debris area reached a historical record when measured by area in satellite images.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Yingjie Li, Samuel V. J. Robinson, Lan H. Nguyen, Jianguo Liu
Summary: The increasing frequency and severity of coastal hypoxia pose a significant threat to marine ecosystems and human well-being. It is crucial to implement continuous and comprehensive monitoring using advanced tools to track spatial and temporal changes in coastal hypoxia. This study utilized satellite imagery and statistical modeling techniques to estimate the spatiotemporal dynamics of hypoxia in the Gulf of Mexico. The results revealed the influence of surface water processes on bottom water hypoxia, highlighting the need for considering time lags in hypoxia studies. Additionally, the study demonstrated the potential of satellite remote sensing for accurate and real-time hypoxia mapping.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Engineering, Multidisciplinary
Christos Makris, Yannis Androulidakis, Theofanis Karambas, Andreas Papadimitriou, Anastasios Metallinos, Yiannis Kontos, Vassilis Baltikas, Michalis Chondros, Yannis Krestenitis, Vicky Tsoukala, Constantine Memos
Summary: This paper presents recent developments in three robust numerical models for simulating wave field evolution and hydrodynamic circulation in gulfs and coastal areas, integrated into a software suite for reliable sea state forecasts at important ports worldwide. The models support vessel approach procedures, derive input data from global or regional forecasts, and include high-resolution storm surge, wave propagation, and wave model for port basins. Pilot forecast implementations in the Mediterranean Sea and eight selected harbours are discussed.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Oceanography
Matthieu Le Henaff, Vassiliki H. Kourafalou, Yannis Androulidakis, Ryan H. Smith, HeeSook Kang, Chuanmin Hu, John T. Lamkin
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2020)
Article
Engineering, Marine
Yannis Androulidakis, Vassiliki Kourafalou, Matthieu Le Henaff, HeeSook Kang, Nektaria Ntaganou
Summary: This passage discusses the relationship between the Loop Current (LC) system and eddies such as Cuba anticyclones (CubANs) and Eddy Franklin, and analyzes their impacts on the Deepwater Horizon (DwH) oil spill incident in 2010. It was found that the evolution of the LC system is closely related to the activity of CubANs, which are influenced by both local and regional conditions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Oceanography
Yannis Androulidakis, Vassilis Kolovoyiannis, Christos Makris, Yannis Krestenitis, Vasilis Baltikas, Natassa Stefanidou, Andromachi Chatziantoniou, Konstantinos Topouzelis, Maria Moustaka-Gouni
Summary: Thermaikos Gulf is a typical coastal inlet in the east-central Mediterranean Sea, which is susceptible to eutrophication events, particularly in the Northern Thermaikos Gulf. The events are mainly associated with southerly winds affecting ocean circulation, while northerly winds contribute to the renewal process in the Gulf.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Environmental Sciences
Lars Robert Hole, Victor de Aguiar, Knut-Frode Dagestad, Vassiliki H. Kourafalou, Yannis Androulidakis, Heesook Kang, Matthieu Le Henaff, Amilcar Calzada
Summary: Simulations showed that the highest stranding rates occur in winter in Northern Cuba, and there are no significant differences in stranding rates between different types of oil. Short-term simulations are not suitable for accurately assessing environmental risk.
MARINE POLLUTION BULLETIN
(2021)
Article
Oceanography
Yannis Androulidakis, Vassiliki Kourafalou, Maria Josefina Olascoaga, Francisco Javier Beron-Vera, Matthieu Le Henaff, Heesook Kang, Nektaria Ntaganou
Summary: The study examines the evolution of the Loop Current and Yucatan Current in the Gulf of Mexico, focusing on the influence of Caribbean Anticyclones on the circulation system. Through observational and simulated data, a strong relationship between the Caribbean Anticyclones and Loop Current variability was identified, highlighting their impact on the dynamics of the Gulf of Mexico.
Article
Oceanography
Nektaria Ntaganou, Vassiliki Kourafalou, Matthieu Le Henaff, Yannis Androulidakis
Summary: This study examines the evolution of the Loop Current (LC) system in the Gulf of Mexico under the interaction with the topography, focusing on the effects of the West Florida Shelf (WFS). Numerical experiments show that modified topography allows the LC to extend farther into the Gulf of Mexico, compared to simulations with realistic topography. Lower layer processes associated with the bottom topography in the southwestern WFS and western Straits of Florida play a role in influencing the evolution of the LC.
Article
Engineering, Marine
Yannis S. Androulidakis, Yannis N. Krestenitis
Summary: The study revealed increasing trends in sea surface temperature over the AIC Seas during the past 14 years, especially in marine heat waves. Air temperature changes were closely related to SST variations with a 5-to-10-day lag, but extreme atmospheric events had a more direct impact on SST variability.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Yannis S. Androulidakis, Vassiliki Kourafalou
Summary: This study highlights the impacts of Marine Heat Wave (MHW) events on coastal environments and the increasing Sea Surface Temperature (SST) trends in South Florida. It shows a significant positive association between SST increase and the formation of MHW events, which can have adverse effects on coastal ecosystems. The study suggests the need for consideration of MHW trends in urban planning for sustainable development in coastal cities of South Florida.
Article
Environmental Sciences
Nektaria Ntaganou, Vassiliki Kourafalou, Francisco Javier Beron-Vera, Maria Josefina Olascoaga, Matthieu Le Henaff, Yannis Androulidakis
Summary: The focus of this study is to further elucidate the evolution of the Loop Current by quantifying the influence of coherent eddy fluxes originating in the Caribbean Sea. The findings indicate a direct connection between coherent anticyclonic vorticity fluxes and the formation of Loop Current Eddy detachments. These findings have important implications for understanding and predicting the Loop Current system and the physical connectivity processes between the Gulf of Mexico and the Caribbean Sea.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Y. Androulidakis, C. Makris, Z. Mallios, I. Pytharoulis, V. Baltikas, Y. Krestenitis
Summary: In September 2020, the IANOS Medicane formed in the Mediterranean Sea, being one of the most severe storms with Category 2 Hurricane characteristics. The storm caused significant sea-level elevation and storm surges in the central Ionian Sea, impacting coastal regions of the Ionian Islands and western Greece. An integrated approach, combining ocean simulations, meteorological and coastal flooding simulations, field and satellite observations, was used to analyze the marine weather conditions and the characteristics of storm surge and coastal inundation due to the Medicane.
Article
Oceanography
Yingjun Zhang, Chuanmin Hu, Brian B. Barnes, Yonggang Liu, Vassiliki H. Kourafalou, Dennis J. McGillicuddy Jr, Jennifer P. Cannizzaro, David C. English, Chad Lembke
Summary: This study used multi-sensor data collected in August 2015 to investigate the three-dimensional bio-optical properties of a Loop Current Eddy (LCE) in the Gulf of Mexico. The LCE was found to have highly stratified waters and strong contrasts in bio-optical properties across its core, edge, and surrounding waters. These contrasts were related to different water masses with different physical and chemical properties, suggesting that physical processes play a role in driving the changes in bio-optical properties.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Water Resources
Christos Makris, Zisis Mallios, Yannis Androulidakis, Yannis Krestenitis
Summary: This paper presents a numerical modelling system (CoastFLOOD) for simulating coastal inundation caused by storm surges and sea level elevation. The model is applied to 10 coastal sites in the Ionian Sea and shows good agreement with satellite observations and estimated flood areas. The inclusion of bottom roughness and realistic Land Cover datasets improves the accuracy of flood extent estimations.