A5026052839- Coastal wetland ecosystem dynamics
- Coastal and Marine Dynamics
- Tropical and Extratropical Cyclones Research
- Geological formations and processes
- Dam Engineering and Safety
- Geotechnical Engineering and Soil Stabilization
- Aeolian processes and effects
- Hydraulic Fracturing and Reservoir Analysis
- Groundwater flow and contamination studies
- Hydrology and Sediment Transport Processes
- Landslides and related hazards
- Geotechnical Engineering and Soil Mechanics
- Peatlands and Wetlands Ecology
- Geotechnical and construction materials studies
- Soil and Unsaturated Flow
- Drilling and Well Engineering
- Tree Root and Stability Studies
- Reservoir Engineering and Simulation Methods
- Archaeology and Natural History
- Soil erosion and sediment transport
- Geography Education and Pedagogy
- Geological Modeling and Analysis
- Hydraulic flow and structures
- Ecology and biodiversity studies
- Aquatic and Environmental Studies
Louisiana State University
2018-2024
U.S. Army Engineer Research and Development Center
2022-2024
United States Army
2022-2024
United States Army Corps of Engineers
2022
ORCID
2019-2021
Northeastern University
2021
Louisiana State University Agricultural Center
2021
Abstract The evolution of coastal wetlands is a complex process which difficult to forecast, made more complicated by the addition changing climatic conditions. Here, long term ecological and geomorphological data are coupled geotechnical measurements at wetland in North Inlet estuary, South Carolina. methodology presented discussed context understanding system climate. Specifically, root shear strength Spartina alterniflora across range elevations was investigated using cone penetrometer...
Levees and floodwalls providing risk reduction to major urban cities along the Mississippi River are prone sand boils due underlying alluvial foundations. This paper presents a case study for levee embankment in Baton Rouge, Louisiana, where field measurements were used determine hydraulic properties of unsaturated soils incorporated into soil-atmosphere coupled finite-element saturated-unsaturated transient seepage model. In particular, piezometer data geoprobe cores collected from at...
Abstract Mechanisms that control marsh edge erosion include wind‐generated waves, vegetation productivity, land use and change, geotechnical properties of sediments. However, existing models for predicting evolution focus primarily on retreat rates as a function wave energy while accounting other controlling factors empirical constants. This simplification arises from lack high‐frequency monitoring evolutions. In particular, is timescale dependent, conducting field observations short...
The US Army Corps of Engineers seeks to beneficially use 70% sediment dredged by 2030, which equates approximately 30 million cubic yards annually. One option achieve this is the beneficial material (BUDM) supplement marsh elevation, bolstering long-term stability natural infrastructure. In BUDM design process, target elevation throughout life must be determined, requires a holistic understanding external factors such as tidal ranges, local hydrology, subsidence, accretion, and projected...
The Rockefeller Wildlife Refuge, located along the Chenier Plain in Southwest Louisiana, was location of sequential landfall two major hurricanes 2020 hurricane season. To protect rapidly retreating coastline a system breakwaters constructed, which partially completed by Multi-institutional, multi-disciplinary rapid response deployments wave gauges, piezometers, geotechnical measurements, vegetation sampling, and drone surveys were conducted before after Hurricanes Laura Delta transects...
Coastal wetlands are experiencing accelerated rates of fragmentation and degradation due to sea-level rise, sediment deficits, subsidence, salt-water intrusion. This reduces their ability provide ecosystem benefits, such as wave attenuation, habitat for migratory birds, a sink carbon nitrogen cycles. A deteriorated back barrier wetland in New Jersey, USA was nourished through thin layer placement (TLP) dredged 2016. field investigation conducted 2019 using cone penetrometer (CPT) quantify...
This study compares the differences in calculated relief well performance at Profit Island vicinity levee (PIVL) near Baton Rouge, Louisiana, between three-dimensional (3D) USGS MODFLOW-USG groundwater model and blanket theory. The 3D hydrogeological was built using indicator kriging with 192 boring logs calibrated against measured discharge rates piezometric heads during March to May 1997 flood event. theory indicates that total 19 wells were lower than ground surface. However, flow...
Abstract To measure the fully softened strength, normally consolidated and reconstituted specimen must be drained, i.e., no development of shear-induced pore-water pressures, during shearing. This article investigates (1) typical shear displacement rates in torsional ring tests that yield drained shearing conditions for a range fine-grained soils (2) problems can develop if porous discs device are not clean saturated prior to placement soil paste container. The data presented herein show...
The Louisiana coastline experiences drastic levels of deterioration due to marsh edge erosion, pipeline and navigation channel construction, saltwater intrusion, restricted sediment supply. role geotechnical properties as a driver wetland behavior is underscored by the many studies on loss, e.g., shallow subsidence, collapse, uprooting. A modified piezocone penetrometer was implemented alongside soil cores evaluate shear strength hydraulic vegetated mats at two marshes in Terrebonne Bay,...
Hurricane Laura made landfall on the southwest Louisiana coast near Cameron, LA August 26th. As approached coast, Coastal Emergency Risks Assessment predicted a storm surge of approximately 5.2 m (17 ft), which marked strongest to impact since catastrophic Rita in 2005. result, team led by LSU and NEU mobilized deploy wave sensors collect drone imagery at Rockefeller Wildlife Refuge 25th before arrival tropical winds. was selected measure capacity wetlands breakwaters attenuate hurricane...
Louisiana's barrier islands have been experiencing high rates of land loss during the last decade. Therefore, coastal restoration efforts increased to combat loss. Buried paleo-river channels are suitable sand sources for because their location and complex buried network available material. Excavated borrow pits in referred as mud-capped dredge or MCDPs. However, use these is limited by setback distance, which currently set be 1,000 ft. this study aims investigate geotechnical properties...
Resilience of transportation infrastructure, such as highway embankments, is critical to avoiding commuter delays and costly repairs. The majority embankments in Louisiana Texas are marginal condition because the high-plasticity clays that used during construction will moisten with time significantly lower strengths. ring shear tests demonstrate Gamez Stark [1] empirical correlations applicable soils. soil water retention curves at each site were fitted Van Genuchten model [2]. For example,...
Levees can be subjected to excessive underseepage through their alluvial foundations during high water periods, which is abated by the installation of relief wells. The USACE uses a modified version blanket theory design However, there are significant uncertainties in performance wells when compared field observations. Therefore, this study presents reliability analysis examine probability failure for well systems and controlling parameters. This was accomplished using generic 3D MODFLOW-USG...
Hurricane Irma was a category 5 hurricane on the Saffir-Simpson wind scale. developed from tropical wave around Cape Verde Islands. The National Center started monitoring it August 26, and classified as storm named 30. Moving across Atlantic Ocean, increased in strength. On September 5, with speeds up to 175 mph (280 km/h). made landfall U.S. Cudjoe Key (near Big Pine Summerland Keys) morning of 10, still being 4 hurricane, second Marco Island, south Naples, same day 3 hurricane. This paper...
Hurricanes and tropical storms represent short duration, high-magnitude events that can significantly deteriorate coastal wetlands. Aside from marsh-edge erosion, changes in marsh ecology, geomorphology may occur turn affect geotechnical properties of the substrata. In June 2020, a multidisciplinary team rapidly assembled deployed instrumentation to monitor wetland southern Louisiana during Tropical Storm Cristobal. The measure storm effects includes wave gauges, piezometers, sediment traps,...