[Data_Center: Short_Name='DOC/NOAA/NESDIS/NGDC']
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Bathymetry of Lake Ontario Entry ID: gov.noaa.ngdc.mgg.dem.282 |
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Summary
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Abstract:
ABSTRACT: Bathymetry of Lake Ontario has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. The entire historic hydrographic sounding data base from the U.S. and Canada, originally collected for nautical charting purposes, was used to create a complete and accurate representation of Lake Ontario bathymetry. The U.S. data primarily came from the NOS Hydrographic Survey Data. This and other bathymetric sounding data collected by the U.S. National Ocean Service's (NOS) Coast Survey and the U. S. Army Corps of Engineers was employed to construct bathymetric contours at 1 meter intervals from 1-10 meters depth and 2 meter intervals at depths greater than 10 meters. Compilation scales ranged from 1:10,000 to 1:50,000. Bathymetric sounding data collected by the Canadian Hydrographic Service (CHS) were employed to construct bathymetric contours at 1 meter intervals and compilation scales ranging from 1:1,000 to 1:30,000. Digitization of the bathymetric contours, merging of the bathymetric contour data sets, poster construction, and preparation of a CD-ROM, were accomplished at the NGDC. Multibeam bathymetric data collected by the University of New Brunswick's Ocean Mapping Group (UNB-OMG), with support of the Geological Survey of Canada (GSC) and the CHS, were kindly made available in gridded form. In the two areas where multibeam bathymetric data were available, no other bathymetric data were used in the compilations. In some areas all available Canadian and U. S. bathymetric sounding data, collected at different times on different survey expeditions, were used to derive the contours. The U.S. coastline used was primarily the GLERL Medium Resolution Vector Shoreline dataset (Lee, 1998). Where needed for more coverage, the NOS Medium Resolution Vector Shoreline for the Conterminous U.S. (1994) dataset was used. Coastlines from the CHS bathymetric sounding data field sheets were used to complete the Canadian coastline. Images were constructed using the publicly-available software Generic Mapping Tools (GMT). SUPPLEMENTAL INFORMATION: Supplemental information regarding spatial reference. Contours are vertically referenced to lake levels. Gridded data is vertically referenced to lake level or sea level as set by user in online tool "Design-a-Grid" advanced options. CURRENTNESS REFERENCE: publication date SPATIAL REFERENCE INFORMATION - GEODETIC MODEL Horizontal Datum Name: North American Datum of 1983 Ellipsoid Name: Geodetic Reference System 80 Semi-major Axis: 6378137.000000 Denominator of Flattening Ratio: 298.257222 Fees: Download online no charge. CD-ROM: 25 USD plus shipping and handling. USD plus shipping and handling Purpose: PURPOSE: Scientific Research, Commercial Exploration, Fishing, Policy and Decision-making |
Related URL
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Link:
GET DATA
Description: Download page for accessing contour data Link: GET DATA Description: Download page for accessing gridded data Link: GET DATA Description: Design your own grid Link: VIEW EXTENDED METADATA Description: View Source Metadata document from the Metadata Manager and Repository (NMMR). Link: VIEW RELATED INFORMATION Description: This bathymetry of Lake Ontario provides a detailed look at the lake floor topography and serves as a GIS base layer for many applications. Link: VIEW RELATED INFORMATION Description: Project web page |
Geographic Coverage
| N: 44.25 | S: 43.15 | E: -76.05 | W: -79.9 |
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Data Set Citation
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Dataset Originator/Creator:
National Geophysical Data CenterNOAA Great Lakes Environmental Research LabNOAA National Ocean ServiceCanadian Hydrographic Service
Dataset Title: Bathymetry of Lake Ontario Dataset Release Date: 1999 Dataset Release Place: Boulder, CO Dataset Publisher: National Geophysical Data Center Version: First Online Resource: http://www.ngdc.noaa.gov/mgg/greatlakes/ontario.html |
Temporal Coverage
| Start Date: 1999-01-01 |
Location Keywords
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CONTINENT
> NORTH AMERICA
> UNITED STATES OF AMERICA
> GREAT LAKES
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Data Resolution
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Latitude Resolution:
0.000833 Decimal degrees Longitude Resolution: 0.000833 Decimal degrees |
Science Keywords
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >LAKES [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >WATER CHANNELS [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >WATER DEPTH [Definition] |
| OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >SEAFLOOR TOPOGRAPHY [Definition] |
| OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >WATER DEPTH [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >STRATIGRAPHIC SEQUENCE [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
INLAND WATERS |
Project
| ESIP >Earth Science Information Partners Program [Information] |
Access Constraints
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ACCESS CONSTRAINTS: No Constraints DISTRIBUTION LIABILITY: Disclaimer: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Data should not be used for navigation. DISTRIBUTION LIABILITY: Disclaimer: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Data should not be used for navigation. CUSTOM ORDER PROCESS: Contact data center for information |
Use Constraints
| Not for navigational purposes |
Keywords
| DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce |
| WDC/MGG, BOULDER > World Data Center for Marine Geology and Geophysics, Boulder |
| Geomorphology |
| Great Lakes |
| Lacustrine |
| Multibeam |
| Topography |
Data Set Progress
| COMPLETE |
Data Center
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National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
[Information]
Data Center URL: http://www.ngdc.noaa.gov/ Dataset ID: _Great_Lakes_Bathymetry,_Lake_Ontario__Great_Lakes_Bathymetry,_Lake_Ontario_
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Distribution
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Distribution_Format:
ARC/INFO interchange format
Fees: Please See Summary |
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Distribution_Format:
GRD98 binary raster format
Fees: Please See Summary |
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Distribution_Format:
JPEG
Fees: Please See Summary |
Personnel
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KELLY
CARIGNAN Role: TECHNICAL CONTACT Role: DIF AUTHOR Phone: (303) 497-6373 Fax: (303) 497-6513 Email: Kelly.Carignan at noaa.gov Contact Address: 325 Broadway, E/GC3 City: Boulder Province or State: CO Postal Code: 80305-3328 Country: USA |
Creation and Review Dates
DIF Creation Date:
2011-08-30
Last DIF Revision Date:
2011-11-04
Future DIF Review Date:
2012-08-30
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