John Barras (Former Employee)
Science and Products
Filter Total Items: 25
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. Jeffress 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 W. Day, John Barras, G. Paul Kemp, Robert R. Lane, William J. 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 D. Steyer, Brady R. 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 J. 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
Filter Total Items: 25
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. Jeffress 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 W. Day, John Barras, G. Paul Kemp, Robert R. Lane, William J. 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 D. Steyer, Brady R. 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 J. 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