A joint venture involving the National Atlas programs in Canada (Natural
Resources Canada), Mexico (Instituto Nacional de Estadística Geografía e
Informática), and the United States (U.S. Geological Survey), as well as
the North American Commission for Environmental Co-operation, has led to
the release (June 2004) of several new products: an updated paper map of
North America, and its associated geospatial data sets and their metadata.
These data sets are available online from each of the partner countries
for download. This data has been revised and re-released in 2006.
The North American Atlas data are standardized geospatial data sets at
1:10,000,000 scale. A variety of basic data layers (e.g. roads,
railroads, populated places, political boundaries, hydrography,
bathymetry, sea ice and glaciers) have been integrated so that their
relative positions are correct. This collection of data sets forms a base
with which other North American thematic data may be integrated. Any data
outside of Canada, Mexico, and the United States of America included in
the North American Atlas data sets is strictly to complete the context of
the data.
The North American Atlas - Bathymetry data set shows the depth in metres
for ocean areas covered by the extent of the North American Atlas project.
Isobaths (lines of equal depth) are provided for sea level (coastline,
with depth = 1), 200, 500, and 2500 metres. Polygons bounded by these
isobaths represent depth ranges of 0-200, 200-500, 500-2500, and greater
than 2500 metres.
