(updated July 2022)
Download site for the automated terrain classification map using SRTM 30
Programmed by Junko Iwahashi, GSI Japan
Original article:
Junko Iwahashi and Richard J. Pike (2007)
Automated classifications of topography from DEMs by an unsupervised nested-means algorithm and a three-part geometric signature, Geomorphology, 86, 409-440. https://doi.org/10.1016/j.geomorph.2006.09.012

If you intend to use the data for a publication, please cite the above paper, Iwahashi and Pike (2007).

• Please see above image and click on below filenames to download GIF images.
  NW.gif (6.93 MB)
  NE1.gif (11.0 MB)
  NE2.gif (4.25 MB)
  SW.gif (4.64 MB)
  SE.gif (6.67 MB)
  (Data spacing: 1 km; map projection: Robinson; central meridian: 0)
  
  
• Please get the original GIS data in ArcGIS grid format.
  120E-centered for Asia and Oceania (38 MB)
  40E-centered for Europe and Africa (38 MB)
  80W-centered for America (38 MB)
  (Data spacing: 1 km; map projection: Robinson)
  
  
• Please get the legend.
  Legend.gif
  
  
• Please get the A4 size PDF file.
  Europe and Africa Robinson; central meridian: 40E (10.7 MB)
  Asia and Oceania Robinson; central meridian: 120E (17.8 MB)
  North and South America Robinson; central meridian: 80W (24.2 MB)
  
  
• Please get the program and the kernel file for automated classification of topography using a DEM in Arc/INFO GRID format.
  ACT.aml (Arc Workstation AML)
  laplacian.ker (kernel file of the Laplacian filter)
  
  
• Please check the following data.
  Global Terrain Classification using 280-m DEMs (Iwahashi et al., 2018)
  Global Polygons for terrain classification divided into uniform slopes and basins using 90-m DEM (Iwahashi and Yamazaki, 2022)