Bruce Jaffe (Former Employee)
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 93
Impact of an extreme event on the sediment budget: Hurricane Andrew in the Louisiana barrier islands Impact of an extreme event on the sediment budget: Hurricane Andrew in the Louisiana barrier islands
This paper examines the influence of Hurricane Andrew on the sediment budget of an 80-kilometer section of the Louisiana barrier islands west of the modern Mississippi delta. Because long-term bathymetric change has been extensively studied in this area, excellent baseline data are available for evaluating the impact of Hurricane Andrew. Results show that despite the high intensity of...
Authors
Jeffrey H. List, Mark E. Hansen, Sallenger, Bruce Jaffe
How much velocity information is necessary to predict sediment suspension in the surf zone? How much velocity information is necessary to predict sediment suspension in the surf zone?
Instantaneous horizontal water velocity, or velocity to a power, does not contain enough information to predict suspension in the surf zone. Unlike steady uniform flow, more one than one velocity is necessary to parameterize pick-up and mixing of sediment into the water column. Using a velocity history improves predictions of suspension by more carefully specifying flow conditions...
Authors
Bruce Jaffe, David Rubin, Asbury Sallenger
Large-scale coastal evolution of Louisiana's barrier islands Large-scale coastal evolution of Louisiana's barrier islands
The prediction of large-scale coastal change is an extremely important, but distant goal. Here we describe some of our initial efforts in this direction, using historical bathymetric information along a 150 km reach of the rapidly evolving barrier island coast of Louisiana. Preliminary results suggest that the relative sea level rise rate, though extremely high in the area, has played a...
Authors
Jeffrey H. List, Bruce Jaffe, Sallenger
Cartographic Production for the Louisiana Barrier Island Erosion Study: 2. Generation of Surface Grids Cartographic Production for the Louisiana Barrier Island Erosion Study: 2. Generation of Surface Grids
No abstract available.
Authors
Dorothy Hopkins, Jefferey List, Bruce Jaffe, Keith Dalziel
Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988 Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988
Using cartographic and aerial photography data from the years 1853, 1890, 1934, 1956, 1978, 1984, and 1988, shoreline change maps of the Isles Dernieres barrier island arc were constructed. These data were accurately superimposed, using a computer mapping system, which removed projection, datum, scale, and other cartographic inconsistencies. Linear, areal, and perimeter measurements...
Authors
Randolph A. McBride, Shea Penland, Bruce Jaffe, S. Williams, Asbury Sallenger, Karen Westphal
Morphodynamic signature of the 1985 hurricane impacts on the northern Gulf of Mexico Morphodynamic signature of the 1985 hurricane impacts on the northern Gulf of Mexico
Three hurricanes hit Lousiana (LA), Mississippi (MS), Alabama (AL), and the Florida (FL) panhandle in 1985, producing dramatic geomorphic changes in a wide variety of coastal environments. The impact zone for hurricanes Danny, Elena, and Juan stretched 1000 km between the Sabine River in LA to the Apalachicola River in FL. Barrier shorelines experienced repeated intense overwash events...
Authors
Shea Penland, John Suter, Ashbury Sallenger, S. Williams, Randolph McBride, Karen Westphal, P. Reimer, Bruce Jaffe
Louisiana barrier island erosion study; surveys of the Isles Dernieres area, Louisiana taken from 1853 to 1936; maps and description of data available on 9-track computer tape Louisiana barrier island erosion study; surveys of the Isles Dernieres area, Louisiana taken from 1853 to 1936; maps and description of data available on 9-track computer tape
No abstract available.
Authors
Bruce Jaffe, Greg Gabel, Thang Phi, Graig McHendrie, Rob Wertz, A. Sallenger
ROLE OF SUSPENDED SEDIMENT IN SHORE-NORMAL BEACH PROFILE CHANGES. ROLE OF SUSPENDED SEDIMENT IN SHORE-NORMAL BEACH PROFILE CHANGES.
Field measurements of suspended sediment-transport were made across a dissipative surf zone during a storm. A correlation between high suspended mass in the water column and periods of onshore flow caused a net onshore transport of suspended sediment even though the mean near-bottom flow was directed offshore. The observed onshore migration of a nearshore bar was predicted by gradients...
Authors
Bruce Jaffe, Richard Sternberg, Asbury Sallgenger
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 93
Impact of an extreme event on the sediment budget: Hurricane Andrew in the Louisiana barrier islands Impact of an extreme event on the sediment budget: Hurricane Andrew in the Louisiana barrier islands
This paper examines the influence of Hurricane Andrew on the sediment budget of an 80-kilometer section of the Louisiana barrier islands west of the modern Mississippi delta. Because long-term bathymetric change has been extensively studied in this area, excellent baseline data are available for evaluating the impact of Hurricane Andrew. Results show that despite the high intensity of...
Authors
Jeffrey H. List, Mark E. Hansen, Sallenger, Bruce Jaffe
How much velocity information is necessary to predict sediment suspension in the surf zone? How much velocity information is necessary to predict sediment suspension in the surf zone?
Instantaneous horizontal water velocity, or velocity to a power, does not contain enough information to predict suspension in the surf zone. Unlike steady uniform flow, more one than one velocity is necessary to parameterize pick-up and mixing of sediment into the water column. Using a velocity history improves predictions of suspension by more carefully specifying flow conditions...
Authors
Bruce Jaffe, David Rubin, Asbury Sallenger
Large-scale coastal evolution of Louisiana's barrier islands Large-scale coastal evolution of Louisiana's barrier islands
The prediction of large-scale coastal change is an extremely important, but distant goal. Here we describe some of our initial efforts in this direction, using historical bathymetric information along a 150 km reach of the rapidly evolving barrier island coast of Louisiana. Preliminary results suggest that the relative sea level rise rate, though extremely high in the area, has played a...
Authors
Jeffrey H. List, Bruce Jaffe, Sallenger
Cartographic Production for the Louisiana Barrier Island Erosion Study: 2. Generation of Surface Grids Cartographic Production for the Louisiana Barrier Island Erosion Study: 2. Generation of Surface Grids
No abstract available.
Authors
Dorothy Hopkins, Jefferey List, Bruce Jaffe, Keith Dalziel
Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988 Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988
Using cartographic and aerial photography data from the years 1853, 1890, 1934, 1956, 1978, 1984, and 1988, shoreline change maps of the Isles Dernieres barrier island arc were constructed. These data were accurately superimposed, using a computer mapping system, which removed projection, datum, scale, and other cartographic inconsistencies. Linear, areal, and perimeter measurements...
Authors
Randolph A. McBride, Shea Penland, Bruce Jaffe, S. Williams, Asbury Sallenger, Karen Westphal
Morphodynamic signature of the 1985 hurricane impacts on the northern Gulf of Mexico Morphodynamic signature of the 1985 hurricane impacts on the northern Gulf of Mexico
Three hurricanes hit Lousiana (LA), Mississippi (MS), Alabama (AL), and the Florida (FL) panhandle in 1985, producing dramatic geomorphic changes in a wide variety of coastal environments. The impact zone for hurricanes Danny, Elena, and Juan stretched 1000 km between the Sabine River in LA to the Apalachicola River in FL. Barrier shorelines experienced repeated intense overwash events...
Authors
Shea Penland, John Suter, Ashbury Sallenger, S. Williams, Randolph McBride, Karen Westphal, P. Reimer, Bruce Jaffe
Louisiana barrier island erosion study; surveys of the Isles Dernieres area, Louisiana taken from 1853 to 1936; maps and description of data available on 9-track computer tape Louisiana barrier island erosion study; surveys of the Isles Dernieres area, Louisiana taken from 1853 to 1936; maps and description of data available on 9-track computer tape
No abstract available.
Authors
Bruce Jaffe, Greg Gabel, Thang Phi, Graig McHendrie, Rob Wertz, A. Sallenger
ROLE OF SUSPENDED SEDIMENT IN SHORE-NORMAL BEACH PROFILE CHANGES. ROLE OF SUSPENDED SEDIMENT IN SHORE-NORMAL BEACH PROFILE CHANGES.
Field measurements of suspended sediment-transport were made across a dissipative surf zone during a storm. A correlation between high suspended mass in the water column and periods of onshore flow caused a net onshore transport of suspended sediment even though the mean near-bottom flow was directed offshore. The observed onshore migration of a nearshore bar was predicted by gradients...
Authors
Bruce Jaffe, Richard Sternberg, Asbury Sallgenger