Geography: Difference between revisions

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== Dataset Description ==
== Dataset Description ==


A digital elevation model (DEM) has been used to produce a topographic map for each country in the Atlas. The DEM is derived from the USGS Global 30 Arc-Second Elevation dataset (GTOPO30).
A digital elevation model (DEM) has been used to produce a topographic map for each country in the Atlas. The DEM is derived from the US Geological Survey (USGS) Global 30 Arc-Second Elevation dataset (GTOPO30).
   
   
Administrative country boundaries in the Atlas are derived from the GADM database of global administrative areas (version 2.0).  
Administrative country boundaries in the Atlas are derived from the GADM database of global administrative areas (version 2.0).  
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== Links to External Data ==
== Links to External Data ==


The USGS Global 30 Arc-Second Elevation dataset is available from the [https://lta.cr.usgs.gov/GTOPO30 US Geological Survey].


The USGS Global 30 Arc-Second Elevation dataset is freely available from the [https://lta.cr.usgs.gov/GTOPO30 US Geological Survey]
The administrative boundaries are available to download from [https://www.gadm.org/ GADM].
 
 
 
The administrative boundaries are freely available to download from [https://www.gadm.org/ GADM]
 


The Capital Cities shapefile is available through the [https://geocommons.com/overlays/225940 Geocommons] website.
The Capital Cities shapefile is available through the [https://geocommons.com/overlays/225940 Geocommons] website.

Revision as of 15:32, 15 July 2015

Map of Africa showing elevation, country boundaries and capital cities
Map of Africa showing elevation, country boundaries and capital cities

CHANGE THE PAGE NAME TO TOPOGRAPHY

Dataset Description

A digital elevation model (DEM) has been used to produce a topographic map for each country in the Atlas. The DEM is derived from the US Geological Survey (USGS) Global 30 Arc-Second Elevation dataset (GTOPO30).

Administrative country boundaries in the Atlas are derived from the GADM database of global administrative areas (version 2.0).

Capital cities shown in the Atlas are taken from the 2011 Revision of World Urbanization Prospects, provided by the United Nations Department of Economic and Social Affairs (Population Division, Population Estimates and Projections Section).

Links to External Data

The USGS Global 30 Arc-Second Elevation dataset is available from the US Geological Survey.

The administrative boundaries are available to download from GADM.

The Capital Cities shapefile is available through the Geocommons website.


Africa Groundwater Atlas >> Additional resources >> Topography