John Barras (Former Employee)
Science and Products
Filter Total Items: 25
Quantifying large-scale historical formation of accommodation in the Mississippi Delta Quantifying large-scale historical formation of accommodation in the Mississippi Delta
Large volumes of new accommodation have formed within the Mississippi Delta plain since the mid-1950s in association with rapid conversion of coastal wetlands to open water. The three-dimensional aspects and processes responsible for accommodation formation were quantified by comparing surface elevations, water depths, and vertical displacements of stratigraphic contacts that were...
Authors
Robert A. Morton, Julie Bernier, Kyle W. Kelso, John A. Barras
Remotely sensed imagery revealing the effects of hurricanes Gustav and Ike on coastal Louisiana Remotely sensed imagery revealing the effects of hurricanes Gustav and Ike on coastal Louisiana
Hurricane Gustav, a category 2 storm with 170 kilometers per hour (km/h) winds, approached the Louisiana coast from the south-southeast, making landfall near Cocodrie, La., on September 1, 2008 (Beven and Kimberlain, 2009); Hurricane Ike, a category 2 storm with 175 km/h winds, approached the Texas coast from the southeast, paralleling offshore of the Louisiana coast, before making...
Authors
John A. Barras, John Brock, Robert A. Morton, Laurinda J. Travers
Identifying baldcypress-water tupelo regeneration classes in forested wetlands of the Atchafalaya Basin, Louisiana Identifying baldcypress-water tupelo regeneration classes in forested wetlands of the Atchafalaya Basin, Louisiana
Baldcypress-water tupelo (cypress-tupelo) swamps are critically important coastal forested wetlands found throughout the southeastern U.S. The long-term survival and sustainability of these swamp forests is unknown due to large-scale changes in hydrologic regimes that prevent natural regeneration following logging or mortality. We used NWI wetland maps and remotely sensed hydrologic data...
Authors
Stephen P. Faulkner, Prajwol Bhattarai, Yvonne C. Allen, John A. Barras, Glenn C. Constant
Satellite Images and Aerial Photographs of the Effects of Hurricanes Katrina and Rita on Coastal Louisiana Satellite Images and Aerial Photographs of the Effects of Hurricanes Katrina and Rita on Coastal Louisiana
Introduction Hurricane Katrina made landfall on the eastern coastline of Louisiana on August 29, 2005; Hurricane Rita made landfall on the western coastline of Louisiana on September 24, 2005. Comparison of Landsat Thematic Mapper (TM) satellite imagery acquired before and after the landfalls of Katrina and Rita and classified to identify land and water demonstrated that water area...
Authors
John A. Barras
Land area changes in coastal Louisiana after Hurricanes Katrina and Rita Land area changes in coastal Louisiana after Hurricanes Katrina and Rita
Comparison of classified Landsat Thematic Mapper (TM) satellite imagery acquired before and after the landfalls of Hurricanes Katrina (August 29, 2005) and Rita (September 24, 2005) demonstrated that water area increased by 217 mi2 (562 km2) in coastal Louisiana. Approximately 82 mi2 (212 km2) of new water areas were in areas primarily impacted by Katrina (Mississippi River Delta basin...
Authors
John A. Barras
Land Area Changes in Coastal Louisiana After the 2005 Hurricanes: A Series of Three Maps Land Area Changes in Coastal Louisiana After the 2005 Hurricanes: A Series of Three Maps
This report includes three posters with analyses of net land area changes in coastal Louisiana after the 2005 hurricanes (Katrina and Rita). The first poster presents a basic analysis of net changes from 2004 to 2005; the second presents net changes within marsh communities from 2004 to 2005; and the third presents net changes from 2004 to 2005 within the historical perspective of change...
Authors
John A. Barras
Science and Products
Filter Total Items: 25
Quantifying large-scale historical formation of accommodation in the Mississippi Delta Quantifying large-scale historical formation of accommodation in the Mississippi Delta
Large volumes of new accommodation have formed within the Mississippi Delta plain since the mid-1950s in association with rapid conversion of coastal wetlands to open water. The three-dimensional aspects and processes responsible for accommodation formation were quantified by comparing surface elevations, water depths, and vertical displacements of stratigraphic contacts that were...
Authors
Robert A. Morton, Julie Bernier, Kyle W. Kelso, John A. Barras
Remotely sensed imagery revealing the effects of hurricanes Gustav and Ike on coastal Louisiana Remotely sensed imagery revealing the effects of hurricanes Gustav and Ike on coastal Louisiana
Hurricane Gustav, a category 2 storm with 170 kilometers per hour (km/h) winds, approached the Louisiana coast from the south-southeast, making landfall near Cocodrie, La., on September 1, 2008 (Beven and Kimberlain, 2009); Hurricane Ike, a category 2 storm with 175 km/h winds, approached the Texas coast from the southeast, paralleling offshore of the Louisiana coast, before making...
Authors
John A. Barras, John Brock, Robert A. Morton, Laurinda J. Travers
Identifying baldcypress-water tupelo regeneration classes in forested wetlands of the Atchafalaya Basin, Louisiana Identifying baldcypress-water tupelo regeneration classes in forested wetlands of the Atchafalaya Basin, Louisiana
Baldcypress-water tupelo (cypress-tupelo) swamps are critically important coastal forested wetlands found throughout the southeastern U.S. The long-term survival and sustainability of these swamp forests is unknown due to large-scale changes in hydrologic regimes that prevent natural regeneration following logging or mortality. We used NWI wetland maps and remotely sensed hydrologic data...
Authors
Stephen P. Faulkner, Prajwol Bhattarai, Yvonne C. Allen, John A. Barras, Glenn C. Constant
Satellite Images and Aerial Photographs of the Effects of Hurricanes Katrina and Rita on Coastal Louisiana Satellite Images and Aerial Photographs of the Effects of Hurricanes Katrina and Rita on Coastal Louisiana
Introduction Hurricane Katrina made landfall on the eastern coastline of Louisiana on August 29, 2005; Hurricane Rita made landfall on the western coastline of Louisiana on September 24, 2005. Comparison of Landsat Thematic Mapper (TM) satellite imagery acquired before and after the landfalls of Katrina and Rita and classified to identify land and water demonstrated that water area...
Authors
John A. Barras
Land area changes in coastal Louisiana after Hurricanes Katrina and Rita Land area changes in coastal Louisiana after Hurricanes Katrina and Rita
Comparison of classified Landsat Thematic Mapper (TM) satellite imagery acquired before and after the landfalls of Hurricanes Katrina (August 29, 2005) and Rita (September 24, 2005) demonstrated that water area increased by 217 mi2 (562 km2) in coastal Louisiana. Approximately 82 mi2 (212 km2) of new water areas were in areas primarily impacted by Katrina (Mississippi River Delta basin...
Authors
John A. Barras
Land Area Changes in Coastal Louisiana After the 2005 Hurricanes: A Series of Three Maps Land Area Changes in Coastal Louisiana After the 2005 Hurricanes: A Series of Three Maps
This report includes three posters with analyses of net land area changes in coastal Louisiana after the 2005 hurricanes (Katrina and Rita). The first poster presents a basic analysis of net changes from 2004 to 2005; the second presents net changes within marsh communities from 2004 to 2005; and the third presents net changes from 2004 to 2005 within the historical perspective of change...
Authors
John A. Barras