<div align="center">     [The NGDC header and web page search is in an undisplayed frame - follow this link to view it]<br /><br />    </div>   NOAA > NESDIS > NGDC       > MGG > bathymetry       > Great       Lakesprivacy       policyAll       MGGCoastalFishingGlobalLakesMultibeamNOS surveysTracklineU.S. Department of Commerce National       Oceanic and Atmospheric Administration National Environmental       Satellite, Data and Information Service (NOAA/NESDIS)Bathymetry of Lake Ontario CD-ROMOn-line sample
CD-ROM ordering       information
Introduction
The new bathymetry of Lake Ontario has been compiled as a component of       the NOAA Great Lakes       Data Rescue Project. This CD-ROM is the third in a series of five       containing bathymetric data of the Great Lakes - following Lake Michigan       (1996) and Lake Erie (1998). Preparation of the Great Lakes bathymetry has       been a collaborative effort between scientists at the NOAA National       Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA       Great Lakes Environmental Research Laboratory (GLERL), the Canadian Hydrographic       Service (CHS), the University of Colorado Cooperative Institute for       Research in Environmental Sciences (CIRES), and the University of       Michigan Cooperative Institute for Limnology and Ecosystems Research (CILER). Credits for the       compilation of this CD-ROM data can be found on the contributing       scientists and organizations page.

A high quality bathymetric map is of great value for geological and       limnological studies. Modeling of lake circulation and sediment transport,       and predicting the effects of climate change and toxic waste remediation       on lake physiography are only a few examples of tasks that can be done       more accurately with the availability of a high quality base map. Surface       area and volume information for many of these applications are included on       this CD-ROM in the dat/ont_area.txt file. The calculations for these       values were done using the coastline and contour files found also in the       "dat" directory. The bathymetric contours extend a short distance into the       Saint Lawrence River to ~44.2N, as seen in the Duck       Galloo Ridge image. The supporting data for this bathymetry are       referenced on this CD-ROM with a data       coverage map. The density of the data is represented in an image at       the bottom of the vector       page. The U.S. Board on Geographic Names has approved Lake Ontario       feature names mentioned in the text and on the images.

A gridded       and a coastline       dataset have been provided on this CD-ROM and they have become a part of       the GEODAS Great Lakes Bathymetry dataset. GEODAS (GEOphysical       DAta System) software on this CD-ROM includes the Grid       Translator and Hydroplot software that allow the generation of custom area       grids in several formats, color viewing of the grids, viewing of the       coastline, and editing of the grid data. GEODAS help is also provided on       the CD-ROM.

Custom color images are available for all or any portion of the Great       Lakes at various scales and projections. A 36"x50" color poster displaying       the bathymetry of Lake Ontario at a scale of 1:275,000 can be ordered       using Data Announcement 2000-MGG-01.
For more information contact:National Geophysical Data Center Marine Geology         & Geophysics Division E/GC3 325 Broadway Boulder, CO         80305-3328 URL: http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html
Geomorphology       | Grids       | Vectors
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