John Barras (Former Employee)
Science and Products
Barrier Island Comprehensive Monitoring Program (BICM)
The goal of the State of Louisiana Barrier Island Comprehensive Monitoring (BICM) program is to provide long-term data on the barrier islands of Louisiana that could be used to plan, design, evaluate, and maintain current and future barrier-island restoration projects.
Topobathymetric Model of the Northern Gulf of Mexico, 1885 to 2021 Topobathymetric Model of the Northern Gulf of Mexico, 1885 to 2021
To support U.S. Army Corps of Engineers (USACE) storm surge modeling for the Louisiana Coastal Protection and Restoration Authority (CPRA), Lowermost Mississippi River Management Program (LMRMP), the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for the...
Land area change in coastal Louisiana from 1932 to 2010 Land area change in coastal Louisiana from 1932 to 2010
Coastal Louisiana wetlands make up the seventh largest delta on Earth, contain about 37 percent of the estuarine herbaceous marshes in the conterminous United States, and support the largest commercial fishery in the lower 48 States. These wetlands are in peril because Louisiana currently undergoes about 90 percent of the total coastal wetland loss in the continental United States...
Land Area Change and Overview of Major Hurricane Impacts in Coastal Louisiana, 2004-08 Land Area Change and Overview of Major Hurricane Impacts in Coastal Louisiana, 2004-08
The U.S. Geological Survey (USGS) assessed changes in land and water coverage in coastal Louisiana within 2 months of Hurricane Gustav (September 1, 2008) and Hurricane Ike (September 13, 2008) by using Landsat Thematic Mapper (TM) satellite imagery. The purpose of this study was twofold: (1) to provide preliminary information on land-water area changes in coastal Louisiana shortly after...
By
Land area change in coastal Louisiana: A multidecadal perspective (from 1956 to 2006) Land area change in coastal Louisiana: A multidecadal perspective (from 1956 to 2006)
The U.S. Geological Survey (USGS) analyzed changes in the configuration of land and water in coastal Louisiana by using a sequential series of 14 data sets summarizing land and water areas from 1956 to 2006. The purpose of this study is to provide a spatially and temporally consistent source of quantitative information on land area across coastal Louisiana, broken into three...
Filter Total Items: 25
Documenting the multiple facets of a subsiding landscape from coastal cities and wetlands to the continental shelf Documenting the multiple facets of a subsiding landscape from coastal cities and wetlands to the continental shelf
Land subsidence is a settling, sinking, or collapse of the land surface. In the southeastern United States, subsidence is frequently observed as sinkhole collapse in karst environments, wetland degradation and loss in coastal and other low-lying areas, and inundation of coastal urban communities. Human activities such as fluid extraction, mining, and overburden alteration can cause or...
Authors
James Flocks, Eileen McGraw, John Barras, Julie Bernier, Mike Bradley, Devin Galloway, James Landmeyer, W. McBride, Christopher Smith, Kathryn Smith, Christopher Swarzenski, Lauren Toth
By
Natural Hazards Mission Area, Water Resources Mission Area, Coastal and Marine Hazards and Resources Program, Caribbean-Florida Water Science Center (CFWSC), Lower Mississippi-Gulf Water Science Center, Ohio-Kentucky-Indiana Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Gulf of America
Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database
During the coming decades, coastlines will respond to widely predicted sea-level rise, storm surge, and coastalinundation flooding from disastrous events. Because physical processes in coastal environments are controlled by the geomorphology of over-the-land topography and underwater bathymetry, many applications of geospatial data in coastal environments require detailed knowledge of...
Authors
Jeffrey Danielson, Sandra Poppenga, John Brock, Gayla Evans, Dean Tyler, Dean Gesch, Cindy Thatcher, John Barras
Creating a Coastal National Elevation Database (CoNED) for science and conservation applications Creating a Coastal National Elevation Database (CoNED) for science and conservation applications
The U.S. Geological Survey is creating the Coastal National Elevation Database, an expanding set of topobathymetric elevation models that extend seamlessly across coastal regions of high societal or ecological significance in the United States that are undergoing rapid change or are threatened by inundation hazards. Topobathymetric elevation models are raster datasets useful for...
Authors
Cindy Thatcher, John Brock, Jeffrey Danielson, Sandra Poppenga, Dean Gesch, Monica Palaseanu-Lovejoy, John Barras, Gayla Evans, Ann Gibbs
Land-cover types, shoreline positions, and sand extents derived From Landsat satellite imagery, Assateague Island to Metompkin Island, Maryland and Virginia, 1984 to 2014 Land-cover types, shoreline positions, and sand extents derived From Landsat satellite imagery, Assateague Island to Metompkin Island, Maryland and Virginia, 1984 to 2014
The U.S. Geological Survey has a long history of responding to and documenting the impacts of storms along the Nation’s coasts and incorporating these data into storm impact and coastal change vulnerability assessments. These studies, however, have traditionally focused on sandy shorelines and sandy barrier-island systems, without consideration of impacts to coastal wetlands. The goal of...
Authors
Julie Bernier, Steven Douglas, Joseph F. Terrano, John Barras, Nathaniel Plant, Christopher Smith
Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana
This study explores the feasibility of using airborne lidar surveys to construct high-resolution digital elevation models (DEMs) and develop an automated procedure to extract levee longitudinal elevation profiles for both federal levees in Atchafalaya Basin and local levees in Lafourche Parish, south Lousiana. This approach can successfully accommodate a high degree of levee sinuosity...
Authors
Monica Palaseanu-Lovejoy, Cindy A. Thatcher, John A. Barras
Pictorial account and landscape evolution of the crevasses near Fort St. Philip, Louisiana Pictorial account and landscape evolution of the crevasses near Fort St. Philip, Louisiana
Quantifying the effects of active natural and constructed crevasses is critical to the planning and success of future ecosystem restoration activities. This document provides a historical overview of landscape changes within the vicinity of the natural crevasses near Fort St. Philip, Louisiana. A significant event influencing landscape change within the Fort St. Philip study area was the...
Authors
Glenn Suir, William Jones, Adrienne L. Garber, John A. Barras
Land loss due to recent hurricanes in coastal Louisiana, U.S.A. Land loss due to recent hurricanes in coastal Louisiana, U.S.A.
The aim of this study is to improve estimates of wetland land loss in two study regions of coastal Louisiana, U.S.A., due to the extreme storms that impacted the region between 2004 and 2009. The estimates are based on change-detection-mapping analysis that incorporates pre and postlandfall (Hurricanes Katrina, Rita, Gustav, and Ike) fractional-water classifications using a combination...
Authors
Monica Palaseanu-Lovejoy, Christine J. Kranenburg, John A. Barras, John Brock
Introduction to the special issue on “Understanding and predicting change in the coastal ecosystems of the northern Gulf of Mexico” Introduction to the special issue on “Understanding and predicting change in the coastal ecosystems of the northern Gulf of Mexico”
The coastal region of the northern Gulf of Mexico owes its current landscape structure to an array of tectonic, erosional and depositional, climatic, geochemical, hydrological, ecological, and human processes that have resulted in some of the world's most complex, dynamic, productive, and threatened ecosystems. Catastrophic hurricane landfalls, ongoing subsidence and erosion exacerbated...
Authors
John Brock, John A. Barras, S. Williams
Integrated coastal management in the Mississippi Delta: System functioning as the basis of sustainable management Integrated coastal management in the Mississippi Delta: System functioning as the basis of sustainable management
No abstract available
Authors
John Day, John Barras, G. Kemp, Robert Lane, William Mitsch, P.H. Templet
Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices
Normalized Difference Vegetation Index (NDVI) derived from MODerate-resolution Imaging Spectroradiometer (MODIS) satellite imagery and land/water assessments from Landsat Thematic Mapper (TM) imagery were used to quantify the extent and severity of damage and subsequent recovery after Hurricanes Katrina and Rita of 2005 within the vegetation communities of Louisiana's coastal wetlands...
Authors
Gregory Steyer, Brady Couvillion, John A. Barras
Recent wetland land loss due to hurricanes: Improved estimates based upon multiple source images Recent wetland land loss due to hurricanes: Improved estimates based upon multiple source images
The objective of this study was to provide a moderate resolution 30-m fractional water map of the Chenier Plain for 2003, 2006 and 2009 by using information contained in high-resolution satellite imagery of a subset of the study area. Indices and transforms pertaining to vegetation and water were created using the high-resolution imagery, and a threshold was applied to obtain a...
Authors
Monica Palaseanu-Lovejoy, Christine Kranenburg, John Brock, John Barras
Hurricane impacts on coastal wetlands: A half-century record of storm-generated features from southern Louisiana Hurricane impacts on coastal wetlands: A half-century record of storm-generated features from southern Louisiana
Temporally and spatially repeated patterns of wetland erosion, deformation, and deposition are observed on remotely sensed images and in the field after hurricanes cross the coast of Louisiana. The diagnostic morphological wetland features are products of the coupling of high-velocity wind and storm-surge water and their interaction with the underlying, variably resistant, wetland...
Authors
Robert A. Morton, John A. Barras
Science and Products
Barrier Island Comprehensive Monitoring Program (BICM)
The goal of the State of Louisiana Barrier Island Comprehensive Monitoring (BICM) program is to provide long-term data on the barrier islands of Louisiana that could be used to plan, design, evaluate, and maintain current and future barrier-island restoration projects.
Topobathymetric Model of the Northern Gulf of Mexico, 1885 to 2021 Topobathymetric Model of the Northern Gulf of Mexico, 1885 to 2021
To support U.S. Army Corps of Engineers (USACE) storm surge modeling for the Louisiana Coastal Protection and Restoration Authority (CPRA), Lowermost Mississippi River Management Program (LMRMP), the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for the...
Land area change in coastal Louisiana from 1932 to 2010 Land area change in coastal Louisiana from 1932 to 2010
Coastal Louisiana wetlands make up the seventh largest delta on Earth, contain about 37 percent of the estuarine herbaceous marshes in the conterminous United States, and support the largest commercial fishery in the lower 48 States. These wetlands are in peril because Louisiana currently undergoes about 90 percent of the total coastal wetland loss in the continental United States...
Land Area Change and Overview of Major Hurricane Impacts in Coastal Louisiana, 2004-08 Land Area Change and Overview of Major Hurricane Impacts in Coastal Louisiana, 2004-08
The U.S. Geological Survey (USGS) assessed changes in land and water coverage in coastal Louisiana within 2 months of Hurricane Gustav (September 1, 2008) and Hurricane Ike (September 13, 2008) by using Landsat Thematic Mapper (TM) satellite imagery. The purpose of this study was twofold: (1) to provide preliminary information on land-water area changes in coastal Louisiana shortly after...
By
Land area change in coastal Louisiana: A multidecadal perspective (from 1956 to 2006) Land area change in coastal Louisiana: A multidecadal perspective (from 1956 to 2006)
The U.S. Geological Survey (USGS) analyzed changes in the configuration of land and water in coastal Louisiana by using a sequential series of 14 data sets summarizing land and water areas from 1956 to 2006. The purpose of this study is to provide a spatially and temporally consistent source of quantitative information on land area across coastal Louisiana, broken into three...
Filter Total Items: 25
Documenting the multiple facets of a subsiding landscape from coastal cities and wetlands to the continental shelf Documenting the multiple facets of a subsiding landscape from coastal cities and wetlands to the continental shelf
Land subsidence is a settling, sinking, or collapse of the land surface. In the southeastern United States, subsidence is frequently observed as sinkhole collapse in karst environments, wetland degradation and loss in coastal and other low-lying areas, and inundation of coastal urban communities. Human activities such as fluid extraction, mining, and overburden alteration can cause or...
Authors
James Flocks, Eileen McGraw, John Barras, Julie Bernier, Mike Bradley, Devin Galloway, James Landmeyer, W. McBride, Christopher Smith, Kathryn Smith, Christopher Swarzenski, Lauren Toth
By
Natural Hazards Mission Area, Water Resources Mission Area, Coastal and Marine Hazards and Resources Program, Caribbean-Florida Water Science Center (CFWSC), Lower Mississippi-Gulf Water Science Center, Ohio-Kentucky-Indiana Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Gulf of America
Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database
During the coming decades, coastlines will respond to widely predicted sea-level rise, storm surge, and coastalinundation flooding from disastrous events. Because physical processes in coastal environments are controlled by the geomorphology of over-the-land topography and underwater bathymetry, many applications of geospatial data in coastal environments require detailed knowledge of...
Authors
Jeffrey Danielson, Sandra Poppenga, John Brock, Gayla Evans, Dean Tyler, Dean Gesch, Cindy Thatcher, John Barras
Creating a Coastal National Elevation Database (CoNED) for science and conservation applications Creating a Coastal National Elevation Database (CoNED) for science and conservation applications
The U.S. Geological Survey is creating the Coastal National Elevation Database, an expanding set of topobathymetric elevation models that extend seamlessly across coastal regions of high societal or ecological significance in the United States that are undergoing rapid change or are threatened by inundation hazards. Topobathymetric elevation models are raster datasets useful for...
Authors
Cindy Thatcher, John Brock, Jeffrey Danielson, Sandra Poppenga, Dean Gesch, Monica Palaseanu-Lovejoy, John Barras, Gayla Evans, Ann Gibbs
Land-cover types, shoreline positions, and sand extents derived From Landsat satellite imagery, Assateague Island to Metompkin Island, Maryland and Virginia, 1984 to 2014 Land-cover types, shoreline positions, and sand extents derived From Landsat satellite imagery, Assateague Island to Metompkin Island, Maryland and Virginia, 1984 to 2014
The U.S. Geological Survey has a long history of responding to and documenting the impacts of storms along the Nation’s coasts and incorporating these data into storm impact and coastal change vulnerability assessments. These studies, however, have traditionally focused on sandy shorelines and sandy barrier-island systems, without consideration of impacts to coastal wetlands. The goal of...
Authors
Julie Bernier, Steven Douglas, Joseph F. Terrano, John Barras, Nathaniel Plant, Christopher Smith
Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana
This study explores the feasibility of using airborne lidar surveys to construct high-resolution digital elevation models (DEMs) and develop an automated procedure to extract levee longitudinal elevation profiles for both federal levees in Atchafalaya Basin and local levees in Lafourche Parish, south Lousiana. This approach can successfully accommodate a high degree of levee sinuosity...
Authors
Monica Palaseanu-Lovejoy, Cindy A. Thatcher, John A. Barras
Pictorial account and landscape evolution of the crevasses near Fort St. Philip, Louisiana Pictorial account and landscape evolution of the crevasses near Fort St. Philip, Louisiana
Quantifying the effects of active natural and constructed crevasses is critical to the planning and success of future ecosystem restoration activities. This document provides a historical overview of landscape changes within the vicinity of the natural crevasses near Fort St. Philip, Louisiana. A significant event influencing landscape change within the Fort St. Philip study area was the...
Authors
Glenn Suir, William Jones, Adrienne L. Garber, John A. Barras
Land loss due to recent hurricanes in coastal Louisiana, U.S.A. Land loss due to recent hurricanes in coastal Louisiana, U.S.A.
The aim of this study is to improve estimates of wetland land loss in two study regions of coastal Louisiana, U.S.A., due to the extreme storms that impacted the region between 2004 and 2009. The estimates are based on change-detection-mapping analysis that incorporates pre and postlandfall (Hurricanes Katrina, Rita, Gustav, and Ike) fractional-water classifications using a combination...
Authors
Monica Palaseanu-Lovejoy, Christine J. Kranenburg, John A. Barras, John Brock
Introduction to the special issue on “Understanding and predicting change in the coastal ecosystems of the northern Gulf of Mexico” Introduction to the special issue on “Understanding and predicting change in the coastal ecosystems of the northern Gulf of Mexico”
The coastal region of the northern Gulf of Mexico owes its current landscape structure to an array of tectonic, erosional and depositional, climatic, geochemical, hydrological, ecological, and human processes that have resulted in some of the world's most complex, dynamic, productive, and threatened ecosystems. Catastrophic hurricane landfalls, ongoing subsidence and erosion exacerbated...
Authors
John Brock, John A. Barras, S. Williams
Integrated coastal management in the Mississippi Delta: System functioning as the basis of sustainable management Integrated coastal management in the Mississippi Delta: System functioning as the basis of sustainable management
No abstract available
Authors
John Day, John Barras, G. Kemp, Robert Lane, William Mitsch, P.H. Templet
Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices
Normalized Difference Vegetation Index (NDVI) derived from MODerate-resolution Imaging Spectroradiometer (MODIS) satellite imagery and land/water assessments from Landsat Thematic Mapper (TM) imagery were used to quantify the extent and severity of damage and subsequent recovery after Hurricanes Katrina and Rita of 2005 within the vegetation communities of Louisiana's coastal wetlands...
Authors
Gregory Steyer, Brady Couvillion, John A. Barras
Recent wetland land loss due to hurricanes: Improved estimates based upon multiple source images Recent wetland land loss due to hurricanes: Improved estimates based upon multiple source images
The objective of this study was to provide a moderate resolution 30-m fractional water map of the Chenier Plain for 2003, 2006 and 2009 by using information contained in high-resolution satellite imagery of a subset of the study area. Indices and transforms pertaining to vegetation and water were created using the high-resolution imagery, and a threshold was applied to obtain a...
Authors
Monica Palaseanu-Lovejoy, Christine Kranenburg, John Brock, John Barras
Hurricane impacts on coastal wetlands: A half-century record of storm-generated features from southern Louisiana Hurricane impacts on coastal wetlands: A half-century record of storm-generated features from southern Louisiana
Temporally and spatially repeated patterns of wetland erosion, deformation, and deposition are observed on remotely sensed images and in the field after hurricanes cross the coast of Louisiana. The diagnostic morphological wetland features are products of the coupling of high-velocity wind and storm-surge water and their interaction with the underlying, variably resistant, wetland...
Authors
Robert A. Morton, John A. Barras