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Bathymetry of Lake Ontario

Entry ID: gov.noaa.ngdc.mgg.dem.282

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Summary

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

Link: GET DATA

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 48.17

S: 47.66

E: -91.77

W: -92.51

Data Set Citation

Dataset Originator/Creator: GOETZ, S.J.HALL, F.G.HUEMMRICH, K.F.NICKESON, J.E.STREBEL, D.E.WOODS, K.D.

Dataset Title: NWS DAILY CLIMATOLOGY DATA: 1987 (SNF)

Dataset Release Date: 1996

Dataset Release Place: Oak Ridge, Tennessee, U.S.A.

Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center

Data Presentation Form: Online Files

Dataset DOI: doi:10.3334/ORNLDAAC/174

Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=174&term2attribut...

Temporal Coverage

Start Date: 1987-01-01

Stop Date: 1987-12-31

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MINNESOTA

Science Keywords

ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT

ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE

ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

METEOROLOGICAL STATIONS

Instrument

RAIN GAUGES

PYRANOMETERS

Thermometers

HYGROMETERS

Project

ESIP > Earth Science Information Partners Program

EOSDIS > Earth Observing System Data Information System

SUPERIOR NATIONAL FOREST

CWIC > CEOS WGISS Integrated Catalog

Ancillary Keywords

EOSDIS

Data Set Progress

COMPLETE

Data Center

THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)

Data Center URL: http://daac.ornl.gov/
Dataset ID: 174

Data Center Personnel
Name: ORNL DAAC USER SERVICES OFFICE Phone: (865) 574-7447 Email: uso at daac.ornl.gov Contact Address: ORNL DAAC User Services Office Oak Ridge National Laboratory City: Oak Ridge Province or State: TN Postal Code: 37831-6407 Country: USA