Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database
Journal of Coastal Research
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- Data Releases:
- USGS data release - Southeast Texas Pilot National Topography Model (NTM), 1933 to 2021
- USGS data release - Topobathymetric Model of Puʻuhonua o Hōnaunau National Historical Park, 2011 to 2019
- USGS data release - Topobathymetric Model of the Coastal Georgia, 1851 to 2020
- USGS data release - Topobathymetric Model of the Coastal Carolinas, 1851 to 2020
- USGS data release - Pilot Topobathymetric Terrain Model of the Kootenai River near Bonners Ferry, Idaho, 2009 - 2019
- USGS data release - Topobathymetric Model of Northern California, 1986 to 2019
- USGS data release - Topobathymetric Model of the Strait of Juan de Fuca, 1891 to 2016
- USGS data release - Topobathymetric Model for the Southern Coast of California and the Channel Islands, 1930 to 2014
- USGS data release - Topobathymetric Model for the Central Coast of California, 1929 to 2017
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Abstract
During the coming decades, coastlines will respond to widely predicted sea-level rise, storm surge, and coastalinundation flooding from disastrous events. Because physical processes in coastal environments are controlled by the geomorphology of over-the-land topography and underwater bathymetry, many applications of geospatial data in coastal environments require detailed knowledge of the near-shore topography and bathymetry. In this paper, an updated methodology used by the U.S. Geological Survey Coastal National Elevation Database (CoNED) Applications Project is presented for developing coastal topobathymetric elevation models (TBDEMs) from multiple topographic data sources with adjacent intertidal topobathymetric and offshore bathymetric sources to generate
seamlessly integrated TBDEMs. This repeatable, updatable, and logically consistent methodology assimilates topographic data (land elevation) and bathymetry (water depth) into a seamless coastal elevation model. Within the overarching framework, vertical datum transformations are standardized in a workflow that interweaves spatially consistent interpolation (gridding) techniques with a land/water boundary mask delineation approach. Output gridded raster TBDEMs are stacked into a file storage system of mosaic datasets within an Esri ArcGIS geodatabase for
efficient updating while maintaining current and updated spatially referenced metadata. Topobathymetric data provide a required seamless elevation product for several science application studies, such as shoreline delineation, coastal inundation mapping, sediment-transport, sea-level rise, storm surge models, and tsunami impact assessment. These detailed coastal elevation data are critical to depict regions prone to climate change impacts and are essential to planners and managers responsible for mitigating the associated risks and costs to both human communities and ecosystems. The CoNED methodology approach has been used to construct integrated TBDEM models in Mobile Bay, the northern Gulf of Mexico, San Francisco Bay, the Hurricane Sandy region, and southern California.
Suggested Citation
Danielson, J.J., Poppenga, S.K., Brock, J., Evans, G.A., Tyler, D.J., Gesch, D.B., Thatcher, C.A., and Barras, J., 2016, Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database: Journal of Coastal Research, v. Special Issue 76, p. 75-89, https://doi.org/10.2112/SI76-008.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Topobathymetric elevation model development using a new methodology: Coastal National Elevation Database |
| Series title | Journal of Coastal Research |
| DOI | 10.2112/SI76-008 |
| Volume | Special Issue 76 |
| Year Published | 2016 |
| Language | English |
| Publisher | Coastal Education and Research Foundation |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 15 p. |
| First page | 75 |
| Last page | 89 |