Hilary Stockdon, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 34
Filter Total Items: 58
Empirical parameterization of setup, swash, and runup Empirical parameterization of setup, swash, and runup
Using shoreline water-level time series collected during 10 dynamically diverse field experiments, an empirical parameterization for extreme runup, defined by the 2% exceedence value, has been developed for use on natural beaches over a wide range of conditions. Runup, the height of discrete water-level maxima, depends on two dynamically different processes; time-averaged wave setup and...
Authors
H.F. Stockdon, R.A. Holman, P.A. Howd, A. H. Sallenger
Probabilistic assessment of beach and dune changes Probabilistic assessment of beach and dune changes
The recent availability of spatially-dense airborne lidar data makes assessment of the vulnerability of beaches and dunes to storm impacts practical over long reaches of coast. As an initial test, elevations of the tops (D high) and bases (Dlow) of foredune ridges along a 55-km reach on the northern Outer Banks, NC were found to have considerable spatial variability suggesting that...
Authors
A. H. Sallenger, H. Stockdon, J. Haines, W. Krabill, R. Swift, J. Brock
Longshore variability of the coastal response to Hurricanes Bonnie and Floyd Longshore variability of the coastal response to Hurricanes Bonnie and Floyd
No abstract available.
Authors
H.F. Stockdon, A. H. Sallenger, P.A. Howd, R.A. Holman
On predicting storm-induced coastal change On predicting storm-induced coastal change
No abstract available.
Authors
A. H. Sallenger, H.F. Stockdon, K. K. Guy, K.L.M. Morgan
Evaluation of airborne topographic lidar for quantifying beach changes Evaluation of airborne topographic lidar for quantifying beach changes
A scanning airborne topographic lidar was evaluated for its ability to quantify beach topography and changes during the Sandy Duck experiment in 1997 along the North Carolina coast. Elevation estimates, acquired with NASA's Airborne Topographic Mapper (ATM), were compared to elevations measured with three types of ground-based measurements - 1) differential GPS equipped all-terrain...
Authors
A. H. Sallenger, W.B. Krabill, R.N. Swift, J. Brock, J. List, M. Hansen, R.A. Holman, S. Manizade, J. Sontag, A. Meredith, K. Morgan, J.K. Yunkel, E.B. Frederick, H. Stockdon
Estimation of shoreline position and change using airborne topographic lidar data Estimation of shoreline position and change using airborne topographic lidar data
A method has been developed for estimating shoreline position from airborne scanning laser data. This technique allows rapid estimation of objective, GPS-based shoreline positions over hundreds of kilometers of coast, essential for the assessment of large-scale coastal behavior. Shoreline position, defined as the cross-shore position of a vertical shoreline datum, is found by fitting a...
Authors
H.F. Stockdon, A. H. Sallenger, J. H. List, R.A. Holman
Barrier island elevations relevant to potential storm impacts; 1, Techniques Barrier island elevations relevant to potential storm impacts; 1, Techniques
No abstract available.
Authors
Nicole A. Elko, Sallenger, Kristy K. Guy, Hilary F. Stockdon, Karen L.M. Morgan
Sea-cliff erosion as a function of beach changes and extreme wave runup during the 1997-1998 El Nino Sea-cliff erosion as a function of beach changes and extreme wave runup during the 1997-1998 El Nino
Over time scales of hundreds to thousands of years, the net longshore sand transport direction along the central California coast has been driven to the south by North Pacific winter swell. In contrast, during the El Nin??o winter of 1997-1998, comparisons of before and after airborne lidar surveys showed sand was transported from south to north and accumulated on the south sides of...
Authors
A. H. Sallenger, W. Krabill, J. Brock, R. Swift, S. Manizade, H. Stockdon
Barrier island elevations relevant to potential storm impacts: 2, South Atlantic Barrier island elevations relevant to potential storm impacts: 2, South Atlantic
No abstract available.
Authors
Nicole A. Elko, Sallenger, Kristy K. Guy, Karen L.M. Morgan
Estimation of wave phase speed and nearshore bathymetry from video imagery Estimation of wave phase speed and nearshore bathymetry from video imagery
A new remote sensing technique based on video image processing has been developed for the estimation of nearshore bathymetry. The shoreward propagation of waves is measured using pixel intensity time series collected at a cross-shore array of locations using remotely operated video cameras. The incident band is identified, and the cross-spectral matrix is calculated for this band. The...
Authors
H.F. Stockdon, R.A. Holman
Science and Products
Filter Total Items: 34
Filter Total Items: 58
Empirical parameterization of setup, swash, and runup Empirical parameterization of setup, swash, and runup
Using shoreline water-level time series collected during 10 dynamically diverse field experiments, an empirical parameterization for extreme runup, defined by the 2% exceedence value, has been developed for use on natural beaches over a wide range of conditions. Runup, the height of discrete water-level maxima, depends on two dynamically different processes; time-averaged wave setup and...
Authors
H.F. Stockdon, R.A. Holman, P.A. Howd, A. H. Sallenger
Probabilistic assessment of beach and dune changes Probabilistic assessment of beach and dune changes
The recent availability of spatially-dense airborne lidar data makes assessment of the vulnerability of beaches and dunes to storm impacts practical over long reaches of coast. As an initial test, elevations of the tops (D high) and bases (Dlow) of foredune ridges along a 55-km reach on the northern Outer Banks, NC were found to have considerable spatial variability suggesting that...
Authors
A. H. Sallenger, H. Stockdon, J. Haines, W. Krabill, R. Swift, J. Brock
Longshore variability of the coastal response to Hurricanes Bonnie and Floyd Longshore variability of the coastal response to Hurricanes Bonnie and Floyd
No abstract available.
Authors
H.F. Stockdon, A. H. Sallenger, P.A. Howd, R.A. Holman
On predicting storm-induced coastal change On predicting storm-induced coastal change
No abstract available.
Authors
A. H. Sallenger, H.F. Stockdon, K. K. Guy, K.L.M. Morgan
Evaluation of airborne topographic lidar for quantifying beach changes Evaluation of airborne topographic lidar for quantifying beach changes
A scanning airborne topographic lidar was evaluated for its ability to quantify beach topography and changes during the Sandy Duck experiment in 1997 along the North Carolina coast. Elevation estimates, acquired with NASA's Airborne Topographic Mapper (ATM), were compared to elevations measured with three types of ground-based measurements - 1) differential GPS equipped all-terrain...
Authors
A. H. Sallenger, W.B. Krabill, R.N. Swift, J. Brock, J. List, M. Hansen, R.A. Holman, S. Manizade, J. Sontag, A. Meredith, K. Morgan, J.K. Yunkel, E.B. Frederick, H. Stockdon
Estimation of shoreline position and change using airborne topographic lidar data Estimation of shoreline position and change using airborne topographic lidar data
A method has been developed for estimating shoreline position from airborne scanning laser data. This technique allows rapid estimation of objective, GPS-based shoreline positions over hundreds of kilometers of coast, essential for the assessment of large-scale coastal behavior. Shoreline position, defined as the cross-shore position of a vertical shoreline datum, is found by fitting a...
Authors
H.F. Stockdon, A. H. Sallenger, J. H. List, R.A. Holman
Barrier island elevations relevant to potential storm impacts; 1, Techniques Barrier island elevations relevant to potential storm impacts; 1, Techniques
No abstract available.
Authors
Nicole A. Elko, Sallenger, Kristy K. Guy, Hilary F. Stockdon, Karen L.M. Morgan
Sea-cliff erosion as a function of beach changes and extreme wave runup during the 1997-1998 El Nino Sea-cliff erosion as a function of beach changes and extreme wave runup during the 1997-1998 El Nino
Over time scales of hundreds to thousands of years, the net longshore sand transport direction along the central California coast has been driven to the south by North Pacific winter swell. In contrast, during the El Nin??o winter of 1997-1998, comparisons of before and after airborne lidar surveys showed sand was transported from south to north and accumulated on the south sides of...
Authors
A. H. Sallenger, W. Krabill, J. Brock, R. Swift, S. Manizade, H. Stockdon
Barrier island elevations relevant to potential storm impacts: 2, South Atlantic Barrier island elevations relevant to potential storm impacts: 2, South Atlantic
No abstract available.
Authors
Nicole A. Elko, Sallenger, Kristy K. Guy, Karen L.M. Morgan
Estimation of wave phase speed and nearshore bathymetry from video imagery Estimation of wave phase speed and nearshore bathymetry from video imagery
A new remote sensing technique based on video image processing has been developed for the estimation of nearshore bathymetry. The shoreward propagation of waves is measured using pixel intensity time series collected at a cross-shore array of locations using remotely operated video cameras. The incident band is identified, and the cross-spectral matrix is calculated for this band. The...
Authors
H.F. Stockdon, R.A. Holman