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The urban palimpsest is the result of the diachronic juxtaposition and superposition of a series of development models that have determined, more or less, the current street network. As a result of this dynamics, the urban fabric of many cities shows a series of singular street fissures - due to their sinuous, transverse or oblique shapes - that give character and identity to the urban landscape. This paper analyzes - through a GIS and a literature review -the street fissures of the urban palimpsest, taking as a paradigm the city plan of València (Spain). A cataloging of singular street fissures is also carried out according to a taxonomy derived from their structure and functioning. Following the explained methodology, this typology of Street fissures can be extrapolated to any other case study that has adequate maps and literature on its secular urban development. [ABSTRACT FROM AUTHOR]

The aim of the paper is to obtain mobility parameters from the urban area of Valencia using geolocated data from Twitter. The objectives are: recognizing the scale of the movements depending on the visit frequency and quantifying the impact of the urban sprawl on the distances covered. Methodology starts locating the homes of Twitter users in order to use this position as the basis for the analysis. Once home location is obtained for each user, the rest of the positions are classified taking into account the number of times a place is visited. We distinguish between frequently and occasionally visited places. In this way, we observe habitual life spaces, where strategies of time consumption are reflected, and occasional life spaces, where movements are not so influenced by the distance. Finally, the impact of urban sprawl in the mobility is measured using distances covered by residents in discontinuous urban areas in comparison of residents in continuous urban areas. Results confirm the impact of discontinuous urbanization on the mobility with an average increase of 4 Km. [ABSTRACT FROM AUTHOR]

This paper examines wastewater treatment and reuse in Catalonia and Valencia through a benchmarking analysis of energy intensities of wastewater treatment plants (WWTPs) located in the coastal municipalities of both regions also involving comparison with average European data on energy use by these plants. The comparison of European and Spanish Mediterranean WWTPs indicates that small Mediterranean plants are less energy intensive than their European counterparts, while for larger plants (above 10,000 m3/day) the reverse is true. As to the comparison between Catalan and Valencian plants, the latter are generally smaller than the former, and also slightly more energy intensive. Regarding reuse, the geographical context would explain these differences in terms of the final destination of effluents treated in these plants. The important presence of irrigated agriculture in Valencia is responsible for the reuse of 45% of potentially reclaimed water while Catalonia, with a different socioterritorial reality, reuses less than 3% of the total effluent treated. [ABSTRACT FROM AUTHOR]