Salmas: city in West Azarbaijan, Iran
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 Salmas, Iran on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Salmas as of 2014, the overall level of street-network sprawl is 1.26, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.57, 1.06, -0.41 and 3.4. The disconnectivity of new streets constructed in Salmas fell, then rose. In 1991-2000, new street layouts were the most connected.
Quantity of street network construction: The street network in Salmas spans a total of 198 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 1.06, 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 1.57, 1.25, 1.23 and 1.26. The SNDi of the aggregate street network in fell at first, but Salmas has worsened in disconnectivity since 2000.
Salmas and West Azarbaijan do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Salmas was at its lowest in 1991-2000, while the SNDi of street constructions in West Azarbaijan was at its lowest in 1976-1990.
How do development practices in Salmas fare in comparison to others in West Azarbaijan? Most recently in 2001-2014, street construction in Salmas was the 7th-most disconnected out of the 11 cities in West Azarbaijan. Its position in the ranks since 1975 has fallen; relative to other cities in West Azarbaijan, street construction in Salmas has become more connected. Salmas ranked 5th in 1975, 6th in 1976-1990, 11th in 1991-2000 and 7th in 2001-2014.
Salmas and Iran do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Salmas was at its lowest in 1991-2000, while the SNDi of street constructions in Iran was at its lowest in 1976-1990.
How do development practices in Salmas fare in comparison to others in Iran? Most recently in 2001-2014, street construction in Salmas was the 66th-most disconnected out of the 181 cities in Iran. Its position in the ranks since 1975 has risen; relative to other cities in Iran, street construction in Salmas has become more disconnected. Salmas ranked 89th in 1975, 121st in 1976-1990, 158th in 1991-2000 and 66th in 2001-2014.
Salmas and West Azarbaijan do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Salmas was at its lowest in 1991-2000, while the SNDi of street constructions in West Azarbaijan was at its lowest in 1976-1990.
To date, Salmas is the 8th-most disconnected out of the 11 cities in West Azarbaijan. Its position in the ranks since 1975 has fallen; relative to other cities in West Azarbaijan, the street network in Salmas has become more connected. Salmas ranked 5th in 1975, 6th in 1976-1990, 7th in 1991-2000 and 8th in 2001-2014.
Salmas and Iran do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Salmas was at its lowest in 1991-2000, while the SNDi of street constructions in Iran was at its lowest in 1976-1990.
To date, Salmas is the 143rd-most disconnected out of the 181 cities in Iran. Its position in the ranks since 1975 has fallen; relative to other cities in Iran, the street network in Salmas has become more connected. Salmas ranked 89th in 1975, 119th in 1976-1990, 131st in 1991-2000 and 143rd in 2001-2014.
As of 2015, Salmas had a built-up area of 6.86 square kilometers, and a population of 122759 people.
These are some other cities with approximately the same population: