Effects of industrial activities on physical and chemical characteristics of water of La Spezia Harbour (Italy); Rilievi nelle acque del Golfo della Spezia durante il funzionamento della centrale termoelettrica dell`ENEL dal 15/09/92 al 15/11/92

In cooperation with local authorities and ENEL (National Electricity Board of Italy), ENEA (National Agency for New Technologies, Energy and the Environment) is conducting a study aimed at investigating the effects of industrial activities on the physico-chemical characteristics of the water of La Spezia harbour. In this frame a monitoring system is deployed since 1989 for continuous recording of hydrological and meteorological parameters relevant to a description of the environmental quality of the marine area under investigation. In particular, this report describes the influence of the thermal discharge from the ENEL electric power station on the harbour water temperature in the period from 15 september 1992 to 15 november 1992. It also describes the effects of natural phenomena, such as the inflowing of water from the Magra river, on the reference temperature in La Spezia harbour. Data obtained by the monitoring system are summarized in graphical form as far as air temperature, water temperature, salinity and precipitation are concerned.