A5017050682- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Landslides and related hazards
- Geotechnical Engineering and Soil Stabilization
- Soil and Unsaturated Flow
- Geotechnical Engineering and Analysis
- Dam Engineering and Safety
- Landfill Environmental Impact Studies
- Groundwater flow and contamination studies
- Geological formations and processes
- Aeolian processes and effects
- Tropical and Extratropical Cyclones Research
- Geotechnical Engineering and Soil Mechanics
- Hydrology and Sediment Transport Processes
- Flood Risk Assessment and Management
- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- 3D Surveying and Cultural Heritage
- Disaster Management and Resilience
- Geophysical Methods and Applications
- Geotechnical and construction materials studies
- Geological Modeling and Analysis
- Geotechnical Engineering and Underground Structures
- Soil Moisture and Remote Sensing
- Video Surveillance and Tracking Methods
Louisiana State University
2016-2024
U.S. Army Engineer Research and Development Center
2023-2024
Texas A&M University
2021-2024
Louisiana Sea Grant
2019-2021
ORCID
2019-2021
GEI Consultants
2021
Federal Emergency Management Agency
2021
Northeastern University
2021
Aquatic Systems (United States)
2018
U.S. Geological Survey, Wetland and Aquatic Research Center
2018
Subtitle D landfills may experience elevated temperatures for a variety of reasons such as hydration combustion ash, waste biodegradation with and without leachate recirculation, aluminum production ash reactions, wastes received temperature. Elevated can reduce service life or effectiveness high density polyethylene (HDPE) geomembranes by accelerating antioxidant depletion polymer degradation. A case history is presented to illustrate the potential effects time-temperature on HDPE...
We propose a new matching-based framework for semi-supervised video object segmentation (VOS). Recently, state-of-the-art VOS performance has been achieved by algorithms, in which feature banks are created to store features region matching and classification. However, how effectively organize information the continuously growing bank remains under-explored, this leads inefficient design of bank. introduce an adaptive update scheme dynamically absorb discard obsolete features. also confidence...
Elevated temperatures in municipal solid waste landfills can pose health, environmental, and safety risks because they generate excessive gases, liquids, pressures, heat that damage landfill infrastructure. This paper discusses mechanisms lead to elevated the presents a case history establish trends gas composition, leachate collection, settlement, slope movement. In general, composition changes from predominantly methane [50–60% volume-to-volume ratio (v/v)] carbon dioxide (40–55% v/v) of...
Introduction The beneficial use of dredged material (BUDM) to nourish degrading wetlands is a direct solution increase surface elevation help keep pace with sea level rise (SLR). While there have been numerous demonstrations BUDM in wetland environments, limited understanding the resultant spatial and temporal response due consolidation underlying foundation soils. Methods To address this, elevations were monitored following multiple nourishments on back-bay island New Jersey. Field data was...
The coastal regions of New Jersey, including the wetlands on Delaware Bay side, face significant challenges due to impacts sea-level rise (SLR). These effects include increasing water levels, heightened erosion, and frequent storm surges. Wetlands, critical components ecosystems, are particularly vulnerable these changes. As sea levels rise, experience prolonged inundation, altered hydrodynamic flow patterns, vegetation loss drowning or reduced productivity, increased salinity intrusion....
This paper presents an investigation of the slope failure in Payatas landfill Quezon City, Philippines. failure, which killed at least 330 persons, occurred July 10th 2000 after two weeks heavy rain from typhoons. Slope stability analyses indicate that raised leachate level, existence gas created by natural aerobic and anaerobic degradation, a significantly over - steepened contributed to failure. The Hydrologic Evaluation Landfill Performance (HELP) model was used predict location level...
This paper uses the San Luis Dam upstream slide to evaluate pore-water pressures at failure and progression of phreatic surface through fine-grained core for drawdown stability analyses. The hydraulic conductivity compressibility parameters saturated unsaturated soils are calibrated using reservoir hydrograph 13 piezometers in order failure. analyses show transient seepage can be used estimate during various core. results also indicate van Genuchten parameter α significantly influences soil...
Aluminum production wastes (APW) are produced during the recycling of aluminum scrap and dross. They frequently disposed in dry form at Subtitle D nonhazardous waste landfills, where they may react adversely with liquids. Depending on APW composition landfill environment, exothermic reaction can cause sustained temperature increases that inhibit normal anaerobic biodegradation. A constant pressure calorimeter test was developed to simulate a basic environment quantify reactivity. reactivity...
Most levee underseepage and uplift analyses are based on steady-state seepage can yield conservative results. Although computations simpler parameters easier to determine readily available, transient unsaturated more representative of conditions because boundary acting the or floodwall saturation change with time, which induce pore-water pressure changes time in embankment foundation strata. In addition, these conditions, e.g., flood surge storm event, rapid such that may not have develop...
Abstract Twitter can supply useful information on infrastructure impacts to the emergency managers during major disasters, but it is time consuming filter through many irrelevant tweets. Previous studies have identified types of messages that be found social media few solutions been proposed efficiently extract ones. We present a framework applied in timely manner provide disaster impact sourced from media. The tested well-studied and data-rich case Hurricane Harvey. procedures consist...
Coastal regions are susceptible to increasing flood risks amid climate change. wetlands play an important role in mitigating coastal hazards. Vegetation exerts a drag force the flow and dampens storm surges wind waves. The prediction of wave attenuation by vegetation typically relies on pre-determined coefficient CD. Existing CD formulas subject biomechanical properties, especially flexibility. Accounting for flexibility through effective plant height (EPH), we propose validate...
The Mississippi River Delta Front (MRDF) is a subaqueous apron of rapidly deposited and weakly consolidated sediment extending from the subaerial portions Birdsfoot River, long characterized by mass-wasting transport. Four (4) depositional environments dominate regionally (an undisturbed topset apron, mudflow gully, lobe, prodelta), centering around distribution initiated variety factors (hurricanes, storms, fluid pressure). To better understand spatiotemporal scales events as well...
Cement kiln dust (CKD) is one of the most important waste materials in cement industry. The large amount this material, has encouraged researchers to propose new ways recycle and reuse it. In paper, effects adding ordinary Portland cement, on physical mechanical properties lightweight concrete were investigated. Results showed that containing CKD, presents lower workability modulus elasticity; however, improvements strength was observed by particular amounts CKD. Eventually, it found 10%...
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 sedimentology near entraining SS Virginia shipwreck (sunk by German U-boat 1942) and surrounding River delta front. Core analyses included 210Pb/137Cs geochronology, granulometry, X-radiography. accumulation rates (SAR) calculated excess 210Pb activity multicores are 0.22–0.29 cm/y at seabed depths less than 20 cm 0.29–0.51 greater cm....
Hurricane storm surges can significantly damage transportation infrastructure and consequently hinder access routes for relief quick recovery of the affected communities. Problematic coastal soils are often weak in strength stiffness highly erodible, which causes distress to pavements arterial roads after flooding events. As a result, enhancement engineering properties such is essential provide resilient systems. A research study was designed assess efficacy calcium-based stabilizers...
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...