Namib Sand Sea Data
PLEASE NOTE: The methods used to generate and construct these data (including caveats) are summarised in the following publication.
Livingstone, I., Bristow, C., Bryant, R. G., Bullard, J., White, K., Wiggs, G. F. S., Baas, A. C. W., Bateman, M. D., and Thomas, D. S. G., (2010) The Namib Sand Sea Digital Database of aeolian dunes and key forcing variables. Journal of Aeolian Research. 2 (2-3),93-104
Our data are distributed freely, but we ask that you cite or acknowledge this work (and the references/acknowledgements therein) if you use the data as part of any research publications and presentations.
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Hey, you have missed some data out, and what about future editions?
The census date for the NSSDD was 2009, and so any data or papers published after this time are not included. It is inevitable that some of the information in the NSSDD may be incorrect and require revision. In some instances material has not been included for the following reasons: (a) information did not include grid references, (b) mapping was of insufficient quality (with regard to geographic referencing), (c) it did not coincide with our study area, or (d) the data were not freely available or available for free dissemination. In all cases, we will attempt to update these data as and when we have time.
Why have we compiled these data?
We wanted to outline the data sources identified as most relevant to understanding the past, present and future development of the sand sea and to describe and scrutinize these data as well as chart the development of a database through which relationships among variables can be explored. It is hoped that the Namib database will establish a framework within which studies of other global sand seas can be situated and similar databases utilising the same protocols can be developed to facilitate global-scale studies. In addition, it is intended that the database described here could, in future, be linked to other projects such as the Sand Seas and Dune Fields of the World Digital Quaternary Atlas (see link) which focuses on sand sea geochronologies.
What is included in the NSSDD?: Data Layers
- Digital Elevation Models
- Remote sensing imagery
- Vegetation Index data
- Quaternary dune age database
- Map of dune types
- Ancillary map data
- Wind data
- Bibliographic database
Download the NSSDD Data
All NSSDD data are stored either as: (a) 'shapefiles' as fully-attributed polygons or arcs, (b) "images" as ERDAS Imagine® uncompressed format files, or (c) "text files" as ascii tab deliminated text files. These files can be easily loaded into ArcGIS®, Arc View® and Erdas Imagine® and are importable into other GIS or CAD software packages. All data layers have associated metadata provided in *.xml files. For ease of download all files are provided in one zipped file which containes a number of logical sub-folders. Details about the data layers and file naming and geographic projection are stored in a accompanying 'readme.txt' file, and are summarised below. In addition, data have also been saved as *.kml files for direct visualisation in Google Earth®. We hope you use and enjoy the data.
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