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. 2012 Apr 13;109(17):6602–6607. doi: 10.1073/pnas.1203333109

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Fig. 2. — (A) Color-coded digital terrain elevation map (DTM) of Haiti; (B) the subdivision of Haitian territory in hydrological units (subbasins) extracted from the DTM, as a result of the convergence of several geomorphological criteria (SI Materials and Methods); (C) spatial distribution of population density obtained by LandScan remote sensing, which is translated into a geo-referenced spatial distribution of nodes endowed with population (SI Materials and Methods); (D) A relevant subset of the network of human mobility, here portrayed synthetically by the four largest outbound connections for each node.

Inline graphic — (A) Color-coded digital terrain elevation map (DTM) of Haiti; (B) the subdivision of Haitian territory in hydrological units (subbasins) extracted from the DTM, as a result of the convergence of several geomorphological criteria (SI Materials and Methods); (C) spatial distribution of population density obtained by LandScan remote sensing, which is translated into a geo-referenced spatial distribution of nodes endowed with population (SI Materials and Methods); (D) A relevant subset of the network of human mobility, here portrayed synthetically by the four largest outbound connections for each node.