Strategies and Techniques for Integrating Topographic and Bathymetric Data in a High-Resolution Digital Elevation Model
Abstract
We present general strategies and techniques for seamlessly integrating topographic and bathymetric data in high-resolution digital elevation models at the coast (coastal DEMs). This includes methods for determining specific modeling needs, techniques for seamlessly integrating bathymetric and topographic data, and ideas for overcoming common problems when building coastal DEMs. A general strategy involves proper planning of the parameters (i.e. extents, resolution, gridding technique), thorough data analyses and manipulations to proper formats and datums, and detailed quality control methods to ensure the accuracy of the final coastal DEM. Often, DEMs are built from one data source and usually represent either topographic or bathymetric elevations. However, when modeling with coastal applications where many data sources span the modeling region, and where topographic and bathymetric data are both required inputs for the DEM, it is necessary to build integrated topographic and bathymetric coastal DEMs in a common vertical datum. Building coastal DEMs is a challenge because input data often vary in resolution, horizontal and vertical datum, digital format, and often do not have analogous elevation values. Our experience and research in developing global, regional, and community coastal DEMs have resulted in a set of techniques and best practices to seamlessly integrate topographic and bathymetric data into a model that best reflects the surface of Earth in the coastal zone.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2011
- Bibcode:
- 2011AGUFMEP41A0571G
- Keywords:
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- 3099 MARINE GEOLOGY AND GEOPHYSICS / General or miscellaneous