Bathymetry of Lake OntarioEntry ID: gov.noaa.ngdc.mgg.dem.282
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
(Click for Interactive Map)
Data Set Citation
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: FirstOnline Resource: http://www.ngdc.noaa.gov/mgg/greatlakes/ontario.html
Start Date: 1999-01-01
Latitude Resolution: 0.000833
Longitude Resolution: 0.000833
TERRESTRIAL HYDROSPHERE > SURFACE WATER > LAKES
TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATER CHANNELS
TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATER DEPTH
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
PALEOCLIMATE > OCEAN/LAKE RECORDS > SEDIMENTS
PALEOCLIMATE > OCEAN/LAKE RECORDS > STRATIGRAPHIC SEQUENCE
Role: DIF AUTHOR
Email: tadday at asu.edu
Department of Plant Biology Life Sciences E-218 PO Box 871601 Arizona State University
Province or State: AZ
Postal Code: 85287-1601
Grobe, CW, CT Ruhland & TA Day. 1997. A new population of the
vascular plant Colobanthus quitensis (Kunth) Bartl. at Arthur Harbor,
Antarctic Peninsula: correlating recruitment with warmer summer air
temperatures. Arctic and Alpine Research 29:217-221.
McGraw, JB & TA Day. 1997. Size and characterization of ... a natural seed
bank in Antarctica. Arctic and Alpine Research 29:213-216.
Day, TA, CT Ruhland, CW Grobe & F Xiong. 1999. Growth and reproduction
of Antarctic vascular plants in response to warming and UV-B radiation
reductions in the field. Oecologia 119:24-35.
Xiong, F, CT Ruhland & TA Day. 1999. Photosynthetic temperature
response of the Antarctic vascular plants Colobanthus quitensis and
Deschampsia antarctica. Physiologia Plantarum 106:276-286.
Xiong, F, EC Mueller & TA Day. 2000. Photosynthetic and respiratory
acclimation and growth response of Antarctic vascular plants to contrasting
temperature regimes. American Journal of Botany 87:700-710.
Ruhland, CT & TA Day. 2000. Effects of ultraviolet-B radiation on
leaf elongation, production and phenylpropanoid concentrations of
Deschampsia antarctica and Colobanthus quitensis in Antarctica.
Physiologia Plantarum 109:244-251.
Xiong, F & TA Day. 2001. Effect of solar ultraviolet-B radiation during
springtime ozone depletion on photosynthesis and biomass production
of Antarctic vascular plants. Plant Physiology 125:738-751.
Ruhland, CT & TA Day. 2001. Size and longevity of seedbanks in
Antarctica and the influence of ultraviolet-B radiation on survivorship,
growth and pigment concentrations of Colobanthus quitensis seedlings.
Environmental and Experimental Botany 45:143-154.
Day, TA, CT Ruhland, & F Xiong. 2001. Influence of solar ultraviolet-B
radiation on Antarctic terrestrial plants: results from a 4-year field study.
Journal of Photochemistry and Photobiology B: Biology 62:78-87.
Day, TA. 2001. Multiple trophic levels in UV-B assessments - completing the
ecosystem. New Phytologist 152:183-186.
Convey, P, PJA Pugh, C Jackson, AW Murray, CT Ruhland, FS Xiong
& TA Day. 2002. Response of Antarctic terrestrial microarthropods to
multifactorial climate manipulation over a four year
period. Ecology, in press.
Xiong, FS, Ruhland, CT & TA Day. 2002. Effect of ultraviolet-B radiation
on growth of Colobanthus quitensis at Palmer Station, Antarctica.
Global Change Biology, in press.
Creation and Review Dates
DIF Creation Date: 2002-05-09
Last DIF Revision Date: 2010-07-02