Gafsa: region in Tunisia
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Gafsa, Tunisia on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Gafsa as of 2014, the overall level of street-network sprawl is 1.55, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.1, 1.43, 1.99 and 1.74. Disconnectivity in street construction in Gafsa follows a zig-zag trend. In 1976-1990, street construction was most disconnected, while construction was most connected in 1975.
Quantity of street network construction: The street network in Gafsa spans a total of 1444 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 1.43, which is relatively well-connected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 2.1, 1.48, 1.56 and 1.55. Disconnectivity in Gafsa's street network follows a zig-zag trend. In 1976-1990, the region was most disconnected; while it was most connected in 1975.
The level of street-network sprawl in new development in Gafsa followed a zig-zag trend with an overall decrease. To get a sense of how street development has changed in Gafsa, we can consider one of its most populous cities: Qafsa. Disconnectivity in the most populous cities in Gafsa follow the same region trend.
How do development practices in Gafsa fare in comparison to others in Tunisia? Most recently in 2001-2014, street construction in Gafsa was the 16th-most disconnected out of the 18 regions in Tunisia. Its position in the ranks since 1975 has fallen; relative to other regions in Tunisia, street construction in Gafsa has become more connected. Gafsa ranked 6th in 1975, 13th in 1976-1990, 10th in 1991-2000 and 16th in 2001-2014.
As of 2014, the city with the most disconnected street network in Gafsa is Qafsa with an SNDi of 1.58, which is relatively well-connected. Conversely, the most connected city is Qafsa with an SNDi of 1.58, which is relatively well-connected. See trends for these cities: Qafsa, Qafsa
The level of street-network sprawl in the aggregate network in Gafsa followed a zig-zag trend with an overall decrease. To get a sense of how the aggregate street network has changed in Gafsa, we can consider one of its most populous cities: Qafsa. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Qafsa was at its lowest in 1976-1990.
To date, Gafsa is the 12th-most disconnected out of the 18 regions in Tunisia. Its position in the ranks since 1975 has fallen; relative to other regions in Tunisia, the street network in Gafsa has become more connected. Gafsa ranked 6th in 1975, 11th in 1976-1990, 12th in 1991-2000 and 12th in 2001-2014.