Global Coastal Typology
The coastal typology consists of a ribbon of grid cells at
half-degree resolution, located along the entire global coastline
at the exit (mouth) points of the global rivers. The typology was
developed in a GIS framework, making it easy to use. The typology
can be directly linked to other databases for continental river
basins at the same scale, as it is linked to the simulated
topological network (STN-30, version 6), as developed by the
research group of Charles Vörösmarty. For the continents, there
are a total of about 6200 cells. For the coastal typology, you can
find 2 zip files here which contain:
1) High resolution maps of the coastal typology (figure 5 of our
research paper) – both for river basins associated to each coastal
cell as well as the coastline itself only.
2) ArcView / ArcGIS shapefiles, the typology is contained in the
item (column) ‘Fin_typ’. The Typology_coastline shapefile contains
only the coastline, the Typology_catchments shapefile contains the
coastal typology linked to the STN-30 v.6 river basins from Vörösmarty
et al. (2000a, b). The values of ‘Fin-typ’ correspond to:
0 - Endorheic or Glaciated
1 - Type I (Small deltas)
2 - Type II (Tidal systems)
3 - Type III (Lagoons)
4 - Type IV (Fjords and fjaerds)
5 - Non-filter - Type Va (Large Rivers) (in the coastline-only shapefile 5 and 51 are grouped to type V)
51 - Non-filter - Type Vb (Large Rivers with tidal deltas)
6 - Non-filter - Type VI (Karst)
7 - Non-filter - Type VII (Arheic)
High resolution maps of the global coastal typology (ZIP archive, 4.7Mb)
GIS files of the global coastal typology (ZIP archive, 0.8Mb)
Citation: Dürr, H. H., G. G. Laruelle, C. M. van Kempen, C. P. Slomp, M. Meybeck and H. Middelkoop (2011) Worldwide Typology of Nearshore Coastal Systems: Defining the Estuarine Filter of River Inputs to the Oceans. Estuaries and Coasts, 34(3), 441-458, doi:10.1007/s12237-011-9381-y.
Link to the related article (publisher's site)
Global Lithology map
The digital map of the lithology was developed in vector mode, based on a digitized version of the geological world map, with adaptations and changes for many of the polygons. In total, the map contains ca. 8300 polygons, and they can be re-aggregated or gridded to various resolutions. 15 rock types are contained, plus major water bodies and ice. The zip file includes the latest version of the lithology map, in ArcView shapefile format. This version is slightly changed with respect to the published paper, with minor corrections mainly in few coastal areas. The lithology is contained in the item (column) ‘lithology’; the original geology can be found in ‘geology’. The zip file also contains two ArcView legend files (the .avl files; they can be imported to newer ArcGIS versions but results are best in ArcView 3.2 or 3.3) for the lithology and geology. We are very interested in the different uses of our data; we’d be delighted if you could let us know if you have interesting results or findings.
Global lithology map (ZIP archive, 4.7Mb)
Citation: Dürr, H. H., M. Meybeck, and S. H. Dürr (2005), Lithologic composition of the Earth's continental surfaces derived from a new digital map emphasizing riverine material transfer. Global Biogeochemical Cycles, 19, GB4S10, doi:10.1029/2005GB002515.
Link to the related article (publisher's site)