Julie Bernier is a Geologist at the St. Petersburg Coastal and Marine Science Center.
I have worked at the USGS - St. Petersburg Coastal and Marine Science Center since 2003. My research interests include applying sedimentologic, stratigraphic, remote sensing, and geophysical techniques to better understand coastal wetland and barrier-island change at historic to geologic time scales.
Science and Products
Filter Total Items: 15
Storm-Related Barrier Island Morphological Evolution
Storms quickly and dramatically alter barrier island environments by changing adjacent seafloor morphology, eroding beaches, scarping or leveling dunes, and sometimes creating new inlets. Measuring the magnitude of barrier island sediment movement during and after storms allows us to track rates of beach recovery, dune growth, and inlet-related alterations to barrier island sediment supply.
Barrier Island Sensitivity to Changes in Sediment Supply
Observations and models show that maintaining barrier islands requires a balance between sea-level rise and sediment supply. However, most estimates of sediment supply are not based on modern conditions, which could result in less accurate predictions of sediment fluxes. We explore how natural and human alterations impact modern sediment fluxes, or changes, on barrier islands – research that has...
Coastal Sediment Availability and Flux (CSAF) Capabilities
As part of the Coastal Sediment Availability and Flux project, we use innovative technology and integrate a variety of techniques to characterize barrier island environments, reconstruct their past history, and predict their future vulnerability.
Historical Wetland Loss - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Analysis of historical satellite imagery and previously interpreted land-classification datasets identified more than 4,600 km2 of low-lying wetlands in coastal Louisiana that converted to open water between 1932 and 2004.
Wetland Subsidence and Erosion - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
The magnitudes of subsidence and erosion at the wetland-loss core sites were estimated by comparing marsh-surface elevations, water depths, and vertical displacements of stratigraphic contacts that were correlated between short sediment cores.
Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Research (2000 - 2011) at the St. Petersburg Coastal and Marine Science Center focused on better understanding the physical processes and human activities that contributed to historical wetland loss in coastal Louisiana and the spatial and temporal trends of that loss.
Induced Subsidence Related to Hydrocarbon Production - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
One of the primary goals of this project was to test the hypothesis that long-term, large-volume hydrocarbon production along the Gulf Coast resulted in land-surface subsidence, reactivation of deep-seated faults, and wetland loss in Texas and Louisiana.
Historical Accommodation Formation - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Bathymetric data acquired at the Madison Bay, Point au Chien, Bully Camp, Leeville, Fourchon, Caminada, and Sabine National Wildlife Refuge study areas provided average one-dimensional accommodation distances at those sites. These results were integrated with the two-dimensional extent of historical wetland loss from 1956 to 2004 to estimate the total 3D (volume) accommodation space that formed...
Natural Subsidence and Sea-Level Rise - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Geologic proxies may shed light on long-term environmental trends and stability of the Louisiana coastal marsh. The combined processes of accretion, sea-level rise and subsidence influence wetland elevation and determine marsh stability.
Photo Gallery - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Gallery of photos taken during fieldwork.
Coastal Sediment Availability and Flux (CSAF)
Sediments are the foundation of coastal systems, including barrier islands. Their behavior is driven by not only sediment availability, but also sediment exchanges between barrier island environments. We collect geophysical, remote sensing, and sediment data to estimate these parameters, which are integrated with models to improve prediction of coastal response to extreme storms and sea-level rise...
Geology and Sediment Availability - Coastal System Change at Fire Island, New York
Sediment supply is a critical control on barrier island vulnerability and resilience over a variety of time scales (e.g., storms to sea level rise). Past work at Fire Island and elsewhere has demonstrated a link between inner shelf sediment availability and barrier island evolution over geologic and historical time scales. However, there have been few opportunities to explore nearshore sediment...
Science and Products
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Filter Total Items: 15
Storm-Related Barrier Island Morphological Evolution
Storms quickly and dramatically alter barrier island environments by changing adjacent seafloor morphology, eroding beaches, scarping or leveling dunes, and sometimes creating new inlets. Measuring the magnitude of barrier island sediment movement during and after storms allows us to track rates of beach recovery, dune growth, and inlet-related alterations to barrier island sediment supply.Barrier Island Sensitivity to Changes in Sediment Supply
Observations and models show that maintaining barrier islands requires a balance between sea-level rise and sediment supply. However, most estimates of sediment supply are not based on modern conditions, which could result in less accurate predictions of sediment fluxes. We explore how natural and human alterations impact modern sediment fluxes, or changes, on barrier islands – research that has...Coastal Sediment Availability and Flux (CSAF) Capabilities
As part of the Coastal Sediment Availability and Flux project, we use innovative technology and integrate a variety of techniques to characterize barrier island environments, reconstruct their past history, and predict their future vulnerability.Historical Wetland Loss - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Analysis of historical satellite imagery and previously interpreted land-classification datasets identified more than 4,600 km2 of low-lying wetlands in coastal Louisiana that converted to open water between 1932 and 2004.Wetland Subsidence and Erosion - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
The magnitudes of subsidence and erosion at the wetland-loss core sites were estimated by comparing marsh-surface elevations, water depths, and vertical displacements of stratigraphic contacts that were correlated between short sediment cores.Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Research (2000 - 2011) at the St. Petersburg Coastal and Marine Science Center focused on better understanding the physical processes and human activities that contributed to historical wetland loss in coastal Louisiana and the spatial and temporal trends of that loss.Induced Subsidence Related to Hydrocarbon Production - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
One of the primary goals of this project was to test the hypothesis that long-term, large-volume hydrocarbon production along the Gulf Coast resulted in land-surface subsidence, reactivation of deep-seated faults, and wetland loss in Texas and Louisiana.Historical Accommodation Formation - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Bathymetric data acquired at the Madison Bay, Point au Chien, Bully Camp, Leeville, Fourchon, Caminada, and Sabine National Wildlife Refuge study areas provided average one-dimensional accommodation distances at those sites. These results were integrated with the two-dimensional extent of historical wetland loss from 1956 to 2004 to estimate the total 3D (volume) accommodation space that formed...Natural Subsidence and Sea-Level Rise - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Geologic proxies may shed light on long-term environmental trends and stability of the Louisiana coastal marsh. The combined processes of accretion, sea-level rise and subsidence influence wetland elevation and determine marsh stability.Photo Gallery - Subsidence and Wetland Loss Related to Fluid Energy Production, Gulf Coast Basin
Gallery of photos taken during fieldwork.Coastal Sediment Availability and Flux (CSAF)
Sediments are the foundation of coastal systems, including barrier islands. Their behavior is driven by not only sediment availability, but also sediment exchanges between barrier island environments. We collect geophysical, remote sensing, and sediment data to estimate these parameters, which are integrated with models to improve prediction of coastal response to extreme storms and sea-level rise...Geology and Sediment Availability - Coastal System Change at Fire Island, New York
Sediment supply is a critical control on barrier island vulnerability and resilience over a variety of time scales (e.g., storms to sea level rise). Past work at Fire Island and elsewhere has demonstrated a link between inner shelf sediment availability and barrier island evolution over geologic and historical time scales. However, there have been few opportunities to explore nearshore sediment... - Data
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