Sea Ice, North America, 2004
Abstract/Contents
- Abstract
- This polygon shapefile shows the approximate extent of marine areas in the Arctic covered by permanent polar ice. The data originated from the Canadian Ice Service and was used in the 1:6,000,000 National Atlas of Canada Reference Map Series. It is represented by polygons showing the average minimum ice limit over a 30 year period, 1969-1999. This layer is part of the 1997-2014 edition of the National Atlas of the United States.
- Purpose
- The North American Atlas data are intended for geographic display and analysis at the national and continental level. The data should be displayed and analyzed at scales appropriate for 1:10,000,000-scale data. No responsibility is assumed by Natural Resources Canada, Instituto Nacional de Estadística Geografía e Informática, or the U.S. Geological Survey in the use of these data.
Description
Type of resource | cartographic, software, multimedia |
---|---|
Form | Shapefile |
Extent | 0.142 |
Place | Reston, VA, US |
Publisher | Geological Survey (U.S.) |
Publication date | 2004 |
Language | English |
Digital origin | born digital |
Map data | 1:10000000Scale not given. ; Custom projection W 180°--E 179°59ʹ54ʺ/N 89°59ʹ45ʺ--N 67°44ʹ45ʺ, Scale not given ; EPSG::4326 |
Creators/Contributors
Creator | Instituto Nacional de Estadística, Geografía e Informática (Mexico) | |
---|---|---|
Creator | Geological Survey (U.S.) | |
Creator | Canada Centre for Remote Sensing |
Subjects
Subject | Sea ice |
---|---|
Subject | North America |
Subject | Arctic Ocean |
Subject | Arctic regions |
Subject | 2004 |
Subject | Oceans |
Genre | Geospatial data |
Genre | Cartographic dataset |
Bibliographic information
Supplemental information | The Commission for Environmental Cooperation (CEC) is an international organization created by Canada, Mexico, and the United States of America under the North American Agreement on Environmental Cooperation (NAAEC). The CEC was established to address regional environmental concerns, help prevent potential trade and environmental conflicts, and to promote the effective enforcement of environmental law. The Agreement complements the environmental provisions of the North American Free Trade Agreement (NAFTA). Further information on the CEC is available from http://www.cec.org/ or from >Commission for Environmental Cooperation >393, rue St-Jacques Ouest >Bureau 200 >Montréal (Québec) >H2Y 1N9 Canada > >Telephone: 514 350 4300 >Facsimile: 514 350 4314 >Electronic mail: info@ccemtl.org > All North American Atlas data sets are available in four data formats: Arc/INFO Export format (e00), ArcView Shapefile, Geography Markup Language (GML) and Spatial Data Transfer Standard (SDTS). Although these data are distributed in geographic coordinates, the North American Atlas Map uses a Lambert Azimuthal Equal Area projection. The following parameters were used for the map: >Longitude_of_Projection_Center: -100.00 >Latitude_of_Projection_Center: 45.00 >False_Easting (metres): 0.0 >False_Northing (metres): 0.0 >Semi-major_Axis: 6370997.0 >Denominator_of_Flattening_Ratio: 1.0 >Ellipsoid_Name: Sphere >Units: metres ; {"gdaId" : 6065787} |
---|---|
WGS84 Cartographics | This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection. |
Location | https://purl.stanford.edu/ck506sm5347 |
Access conditions
- Use and reproduction
- This item is in the public domain. There are no restrictions on use.
- Copyright
- This work is in the Public Domain, meaning that it is not subject to copyright.
Preferred citation
- Preferred citation
- U.S. Geological Survey, Instituto Nacional de Estadística, Geografía e Informática, and Canada Centre for Remote Sensing. (2004). Sea Ice, North America, 2004. USGS. Available at: http://purl.stanford.edu/ck506sm5347.
Collection
National atlas of the United States of America, 1997-2014
View other items in this collection in SearchWorksAlso listed in
Loading usage metrics...