| Abstract: | To generate water depth data from randomly distributed bathymetric data for numerical hydrodymamic models, raw input data from field surveys, water depth data digitized from nautical charts, or a combination of the two are sorted to given an ordered data set on which a search algorithm is used to isolate data for interpolation. Water depths at locations required by hydrodynamic models are interpolated from the bathymetric data base using linear or cubic shape functions used in the finite-element method. The bathymetric database organization and preprocessing, the search algorithm used in finding the bounding points for interpolation, the mathematics of the interpolation formulae, and the features of the automatic generation of water depths at hydrodynamic model grid points are included in the analysis. This report includes documentation of two computer programs which are used to: (1) organize the input bathymetric data; and (2) to interpolate depths for hydrodynamic models. An example of computer program operation is drawn from a realistic application to the San Francisco Bay estuarine system. (Author ‘s abstract) |
| Genre: | USGS Numbered Series |
| ProdID: | 18354 |
| Citation Author: | Burau, J. R.; Cheng, R. T. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 45 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey ;
Books and Open-File Reports Section [distributor], |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 89-28 |
| Citation Search Results Text: | A general method for generating bathymetric data for hydrodynamic computer models; 1989; OFR; 89-28; Burau, J. R.; Cheng, R. T. |
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| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | A general method for generating bathymetric data for hydrodynamic computer models; 1989; OFR; 89-28; Burau, J. R.; Cheng, R. T. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1989/0028/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1989/0028/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey ;
Books and Open-File Reports Section [distributor], |
