Ioannis Y. Georgiou
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View article: Ionosphere thermal response to a HF radio wave interaction, during artificial 5577 Å airglow enhancements at a sporadic E layer
Ionosphere thermal response to a HF radio wave interaction, during artificial 5577 Å airglow enhancements at a sporadic E layer Open
This article studies an experiment of artificial modification of the ionosphere by HF radio waves transmitted by a ground-based antenna in Arecibo, i.e., at a mid-latitude ionosphere. The peculiarity and uniqueness of this experiment (just…
View article: Local Versus Regional Controls on the Morphology and Texture of Preserved Beach and Foredune Ridges
Local Versus Regional Controls on the Morphology and Texture of Preserved Beach and Foredune Ridges Open
Beach‐and‐foredune‐ridge plains archive paleoenvironmental changes within their morphology and stratigraphy. Despite advances in integrating modern process data with coastal sedimentary archives, we lack a quantitative understanding of how…
View article: Hurricanes along the Southeast Atlantic Coast build marsh resiliency through mineral sedimentation
Hurricanes along the Southeast Atlantic Coast build marsh resiliency through mineral sedimentation Open
View article: Deployment for Additive Construction through Digital Platforms: Gananoque Project as a Case Study
Deployment for Additive Construction through Digital Platforms: Gananoque Project as a Case Study Open
View article: Understanding Wave Attenuation Across Marshes: Insights from Numerical Modeling
Understanding Wave Attenuation Across Marshes: Insights from Numerical Modeling Open
Marsh vegetation dampens wave energy, providing protection to coastal communities from storms. A new modeling framework was applied to study wave height evolution over the saltmarsh bordering Newbury, MA. A regional Delft3D hydrodynamic mo…
View article: Storm Dynamics Control Sedimentation and Shelf‐Bay‐Marsh Sediment Exchange Along the Louisiana Coast
Storm Dynamics Control Sedimentation and Shelf‐Bay‐Marsh Sediment Exchange Along the Louisiana Coast Open
Hurricanes can benefit wetland accretion by augmenting the delivery of mineral sediment, an essential process allowing marshes to offset submergence during rising sea levels. Using Hurricane Gustav (2008, Louisiana) as a control, we examin…
View article: Identifying and filling critical knowledge gaps can optimize financial viability of blue carbon projects in tidal wetlands
Identifying and filling critical knowledge gaps can optimize financial viability of blue carbon projects in tidal wetlands Open
One of the world’s largest “blue carbon” ecosystems, Louisiana’s tidal wetlands on the US Gulf of Mexico coast, is rapidly being lost. Louisiana’s strong legal, regulatory, and monitoring framework, developed for one of the world’s largest…
View article: Storm Dynamics Control Sedimentation and Shelf-Bay-Marsh Sediment Exchange along the Louisiana Coast
Storm Dynamics Control Sedimentation and Shelf-Bay-Marsh Sediment Exchange along the Louisiana Coast Open
Hurricanes benefit wetland accretion by augmenting the delivery of mineral sediment, an essential process allowing marshes to offset submergence due to rising sea levels. Using Hurricane Gustav as a control, we examined eight synthetic sto…
View article: Vertical accretion trends project doughnut-like fragmentation of saltmarshes
Vertical accretion trends project doughnut-like fragmentation of saltmarshes Open
Coastal saltmarshes keep pace with sea-level rise through in-situ production of organic material and incorporation of allochthonous inorganic sediment. Here we report rates of vertical accretion of 16 new sediment cores collected proximal …
View article: Storm and tidal interactions control sediment exchange in mixed-energy coastal systems
Storm and tidal interactions control sediment exchange in mixed-energy coastal systems Open
Storms can have devasting effects on shorelines, causing flooding and the destruction of property and infrastructure. As global warming and the frequency and magnitude of tropical storms increase, barrier islands comprising 10% of the worl…
View article: Short-Term Sediment Dispersal on a Large Retreating Coastal River Delta via 234Th and 7Be Sediment Geochronology: The Mississippi River Delta Front
Short-Term Sediment Dispersal on a Large Retreating Coastal River Delta via 234Th and 7Be Sediment Geochronology: The Mississippi River Delta Front Open
Many Mississippi River Delta studies have shown recent declines in fluvial sediment load from the river and associated land loss. In contrast, recent sedimentary processes on the subaqueous delta are less documented. To help address this k…
View article: Sedimentary Processes and Instability on the Mississippi River Delta Front near the Shipwreck of the SS Virginia
Sedimentary Processes and Instability on the Mississippi River Delta Front near the Shipwreck of the SS Virginia Open
Sediment cores were collected from a mudflow lobe (80 m water depth) offshore of the Mississippi River’s Southwest Pass in 2017 to better understand the sedimentology near the lobe entraining the SS Virginia shipwreck (sunk by a German U-b…
View article: Sedimentary Processes and Instability on the Mississippi River Delta Front near the Shipwreck of the SS Virginia
Sedimentary Processes and Instability on the Mississippi River Delta Front near the Shipwreck of the SS Virginia Open
Sediment cores were collected from a mudflow lobe (80 m water depth) offshore of the Mississippi River’s Southwest Pass in 2017 to better understand the sedimentology near the lobe entraining the SS Virginia shipwreck (sunk by a German U-B…
View article: Variability in estuarine habitat use of a threatened species in the northern Gulf of Mexico: implications for coastal restoration
Variability in estuarine habitat use of a threatened species in the northern Gulf of Mexico: implications for coastal restoration Open
Coastal restoration projects often require sediment resources borrowed from estuarine or marine ecosystems. A generalized additive modeling (GAM) framework was used to characterize fish-habitat relationships and predict spatiotemporal and …
View article: Long-term sea level rise modeling of a basin-tidal inlet system reveals sediment sinks
Long-term sea level rise modeling of a basin-tidal inlet system reveals sediment sinks Open
Much of the world’s population lives close to coastlines and this proximity is becoming increasingly impactful because of sea-level rise (SLR). Barrier islands and backbarrier saltmarshes, which comprise >10% of these coasts, are particula…
View article: Real-time forecasting model development work plan
Real-time forecasting model development work plan Open
The objective of the Lowermost Mississippi River Management Program is to move the nation toward more holistic management of the lower reaches of the Mississippi River through the development and use of a science-based decision-making fram…
View article: Dissolved organic carbon dynamics and fluxes in Mississippi-Atchafalaya deltaic system impacted by an extreme flood event and hurricanes: a multi-satellite approach using Sentinel-2/3 and Landsat-8/9 data
Dissolved organic carbon dynamics and fluxes in Mississippi-Atchafalaya deltaic system impacted by an extreme flood event and hurricanes: a multi-satellite approach using Sentinel-2/3 and Landsat-8/9 data Open
Transport of riverine and wetland-derived dissolved organic carbon (DOC) spanning tidal wetlands, estuaries, and continental shelf waters functionally connects terrestrial and aquatic carbon reservoirs, yet the magnitude and ecological sig…
View article: Hydrodynamics and Sediment-Transport Pathways along a Mixed-Energy Spit-Inlet System: A Modeling Study at Chincoteague Inlet (Virginia, USA)
Hydrodynamics and Sediment-Transport Pathways along a Mixed-Energy Spit-Inlet System: A Modeling Study at Chincoteague Inlet (Virginia, USA) Open
Tidal-inlet systems are dynamic features that respond to short-term (e.g., storms) and longer-term processes (e.g., sea-level rise, changes in tidal prism). The Chincoteague Inlet system, located along the northern Eastern Shore of Virgini…
View article: A community-informed transdisciplinary approach to coastal restoration planning: Maximizing the social and ecological co-benefits of wetland creation in Port Fourchon, Louisiana, USA
A community-informed transdisciplinary approach to coastal restoration planning: Maximizing the social and ecological co-benefits of wetland creation in Port Fourchon, Louisiana, USA Open
Port Fourchon is a vital staging area for Gulf of Mexico energy production and is strategically located in the Barataria-Terrebonne Estuary System, a biologically and economically productive ecosystem bounded by the Atchafalaya and Mississ…
View article: Reevaluating the wave power-salt marsh retreat relationship
Reevaluating the wave power-salt marsh retreat relationship Open
View article: Hydrodynamic controls on sedimentary facies of tidal point bars: A case study in the Georgia coastal plain, <scp>USA</scp>
Hydrodynamic controls on sedimentary facies of tidal point bars: A case study in the Georgia coastal plain, <span>USA</span> Open
Tidal point bars are commonly developed in coastal plain meandering channels. They form by the same basic processes as fluvial point bars but are further modified by tidal action. This study analyses the sedimentary facies of six active ti…
View article: The economics of sediment quality on barrier shoreline restoration
The economics of sediment quality on barrier shoreline restoration Open
View article: Dispelling myths concerning the wave power-marsh retreat relationship
Dispelling myths concerning the wave power-marsh retreat relationship Open
Salt marshes are threatened by rising sea levels and human activities, and a major mechanism of marsh loss is edge retreat or erosion. To understand and predict loss in these valuable ecosystems, studies have related erosion to marsh hydro…
View article: Following the Sand Grains
Following the Sand Grains Open
When longshore transport systems encounter tidal inlets, complex mechanisms are involved in bypassing sand to downdrift barriers. Here, this process is examined at Plum Island Sound and Essex Inlets, Massachusetts, USA. One major finding f…
View article: Barriers in Implementation of Wastewater Reuse: Identifying the Way Forward in Closing the Loop
Barriers in Implementation of Wastewater Reuse: Identifying the Way Forward in Closing the Loop Open
The business case for circular economy in water management perspective has gain relevance in the recent times. By 2030, it is estimated that 160% of global total available water will be required to satisfy demand of anthropogenic-related a…
View article: Will hurricane sedimentation aid southeastern US saltmarsh resiliency in the face of climate change and sea-level rise?
Will hurricane sedimentation aid southeastern US saltmarsh resiliency in the face of climate change and sea-level rise? Open
<p>Coastal saltmarshes are an important and highly diverse ecosystem, shielding the mainland from erosion and flooding. Along the US East Coast these valuable wetlands are endangered due to climate change, sea-level rise, and reduced…
View article: Flow Loss in Deltaic Distributaries: Impacts on Channel Hydraulics, Morphology, and Stability
Flow Loss in Deltaic Distributaries: Impacts on Channel Hydraulics, Morphology, and Stability Open
The most comprehensive data sets documenting hydraulic and sediment transport regimes in the lower reaches of alluvial rivers come from systems that are managed to prevent flow loss from the channel into the overbank environment. Even mode…
View article: Shoreline Dynamics Along a Developed River Mouth Barrier Island: Multi-Decadal Cycles of Erosion and Event-Driven Mitigation
Shoreline Dynamics Along a Developed River Mouth Barrier Island: Multi-Decadal Cycles of Erosion and Event-Driven Mitigation Open
Human modifications in response to erosion have altered the natural transport of sediment to and across the coastal zone, thereby potentially exacerbating the impacts of future erosive events. Using a combination of historical shoreline-ch…
View article: Louisiana Coastal Zone sediment characterization; comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program
Louisiana Coastal Zone sediment characterization; comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program Open
First posted January 9, 2020 For additional information, contact: St. Petersburg Coastal and Marine Science CenterU.S. Geological Survey600 4th Street SouthSt. Petersburg, FL 33701 Repeated sampling and grain-size analysis of surficial sed…
View article: TEMPORAL AND SPATIAL VARIABILITY IN INORGANIC SEDIMENT CONTRIBUTIONS TO THE GREAT MARSH, MASSACHUSETTS
TEMPORAL AND SPATIAL VARIABILITY IN INORGANIC SEDIMENT CONTRIBUTIONS TO THE GREAT MARSH, MASSACHUSETTS Open