Publications
Topobathymetric elevation model of Majuro Atoll
Republic of the Marshall Islands
Republic of the Marshall Islands
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Introduction: Special issue on advances in topobathymetric mapping, models, and applications
Detailed knowledge of near-shore topography and bathymetry is required for many geospatial data applications in the coastal environment. New data sources and processing methods are facilitating development of seamless, regional-scale topobathymetric digital elevation models. These elevation models integrate disparate multi-sensor, multi-temporal topographic and bathymetric datasets to provide a co
Authors
Dean B. Gesch, John Brock, Christopher E. Parrish, Jeffrey N. Rogers, C. Wayne Wright
Evaluation of airborne lidar elevation surfaces for propagation of coastal inundation: the importance of hydrologic connectivity
Detailed information about coastal inundation is vital to understanding dynamic and populated areas that are impacted by storm surge and flooding. To understand these natural hazard risks, lidar elevation surfaces are frequently used to model inundation in coastal areas. A single-value surface method is sometimes used to inundate areas in lidar elevation surfaces that are below a specified elevati
Authors
Sandra K. Poppenga, Bruce B. Worstell
Development of the Coastal Storm Modeling System (CoSMoS) for predicting the impact of storms on high-energy, active-margin coasts
The Coastal Storm Modeling System (CoSMoS) applies a predominantly deterministic framework to make detailed predictions (meter scale) of storm-induced coastal flooding, erosion, and cliff failures over large geographic scales (100s of kilometers). CoSMoS was developed for hindcast studies, operational applications (i.e., nowcasts and multiday forecasts), and future climate scenarios (i.e., sea-lev
Authors
Patrick L. Barnard, Maarten van Ormondt, Li H. Erikson, Jodi Eshleman, Cheryl J. Hapke, Peter Ruggiero, Peter Adams, Amy C. Foxgrover
Hydrologic enforcement of lidar DEMs
Hydrologic-enforcement (hydro-enforcement) of light detection and ranging (lidar)-derived digital elevation models (DEMs) modifies the elevations of artificial impediments (such as road fills or railroad grades) to simulate how man-made drainage structures such as culverts or bridges allow continuous downslope flow. Lidar-derived DEMs contain an extremely high level of topographic detail; thus, hy
Authors
Sandra K. Poppenga, Bruce B. Worstell, Jeffrey J. Danielson, John Brock, Gayla A. Evans, H. Karl Heidemann
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 and abrupt c
Authors
Monica Palaseanu-Lovejoy, Cindy A. Thatcher, John A. Barras
Topobathymetric model of Mobile Bay, Alabama
Topobathymetric Digital Elevation Models (DEMs) are a merged rendering of both topography (land elevation) and bathymetry (water depth) that provides a seamless elevation product useful for inundation mapping, as well as for other earth science applications, such as the development of sediment-transport, sea-level rise, and storm-surge models. This 1/9-arc-second (approximately 3 meters) resolutio
Authors
Jeffrey J. Danielson, John Brock, Daniel M. Howard, Dean B. Gesch, Jamie M. Bonisteel-Cormier, Laurinda J. Travers
Emerging methods for the study of coastal ecosystem landscape structure and change
Coastal landscapes are heterogeneous, dynamic, and evolve over a range of time scales due to intertwined climatic, geologic, hydrologic, biologic, and meteorological processes, and are also heavily impacted by human development, commercial activities, and resource extraction. A diversity of complex coastal systems around the globe, spanning glaciated shorelines to tropical atolls, wetlands, and ba
Authors
John Brock, Jeffrey J. Danielson, Sam Purkis
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 of high-res
Authors
Monica Palaseanu-Lovejoy, Christine J. Kranenburg, John A. Barras, John Brock
Consideration of vertical uncertainty in elevation-based sea-level rise assessments: Mobile Bay, Alabama case study
The accuracy with which coastal topography has been mapped directly affects the reliability and usefulness of elevationbased sea-level rise vulnerability assessments. Recent research has shown that the qualities of the elevation data must be well understood to properly model potential impacts. The cumulative vertical uncertainty has contributions from elevation data error, water level data uncerta
Authors
Dean B. Gesch
Accuracy assessment of a mobile terrestrial lidar survey at Padre Island National Seashore
The higher point density and mobility of terrestrial laser scanning (light detection and ranging (lidar)) is desired when extremely detailed elevation data are needed for mapping vertically orientated complex features such as levees, dunes, and cliffs, or when highly accurate data are needed for monitoring geomorphic changes. Mobile terrestrial lidar scanners have the capability for rapid data col
Authors
Samsung Lim, Cindy A. Thatcher, John Brock, Dustin R. Kimbrow, Jeffrey J. Danielson, B.J. Reynolds
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 by sea-lev
Authors
John Brock, John A. Barras, S. Jeffress Williams
Quantifying landscape change in an arctic coastal lowland using repeat airborne LiDAR
Increases in air, permafrost, and sea surface temperature, loss of sea ice, the potential for increased wave energy, and higher river discharge may all be interacting to escalate erosion of arctic coastal lowland landscapes. Here we use airborne light detection and ranging (LiDAR) data acquired in 2006 and 2010 to detect landscape change in a 100 km2 study area on the Beaufort Sea coastal plain of
Authors
Benjamin M. Jones, Jason M. Stoker, Ann E. Gibbs, Guido Grosse, Vladimir E. Romanovsky, Thomas A. Douglas, Nichole E.M. Kinsman, Bruce M. Richmond