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L1644_C07.fm Page 279 Monday, October 20, 2003 12:10 PM

France

Arragon

Mediterranean Sea

FIGURE 7.5 Classes of average wind speed for all districts in Catalonia (data of 1997 and
1998).

TABLE 7.4
Number and Share of Districts Belonging to Each Class of Wind Speed

Average wind speed class (m/s) Districts Share (%)

0 to 2 20 48.8
2 to 3 14 34.1
3 to 4 7 17.1
0 to 4 31 100

7.6.2 SETTLEMENT STRUCTURE CLASSES
As a region in the context of the example, the province level in Catalonia is con-
sidered. Furthermore, the districts are taken into account. In this way, four settlement
structure classes have been identified to represent statistically the Catalonian situa-
tion sufficiently (Figure 7.6); this is characterized by the rapid decrease of the
population from the city boundaries toward the countryside. For the purpose of this
study, population data for Catalonia are taken from the MiraMon GIS (Pons and
Maso 2000).

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