A poorly studied shallow hydrothermal vent field of the Panarea Volcanic Complex (PVC) was investigated, combining specific monitoring technologies, to provide new insights into its geological, biological and geochemical features. The investigated site, named "Secca dei Pesci", is identified as one of the area of the PVC were major tectonic, volcanic and hydrothermal activity have been observed. It is located on the SE margin of the Panarea platform and consists of a central bathymetric low bounded by two approximately circular highs, elevated up to 50 m above the flat platform bottom. Evidence of strong exhalative activity were revealed by multibeam and ROV observations, then water column properties were investigated by CTD and pCO2 probes and dissolved benthic flux were measured by benthic chamber deployments. Sediment sampling and ROV images analysis allowed the identification of the macrobenthic assemblage living within the vent-areas and in the nearby seafloor. The utilized multidisciplinary approach, based on an integrated analysis of the physico-chemical, sedimentological and biological characteristics of "Secca dei pesci" hydrothermal field, provide new information on the peculiar environmental conditions of the area and their influences on the associated living communities. Moreover, results of this study improve knowledge on the geochemical dynamics of PVC, helping to understand volcanic hazard and to mitigate the risks of an explosive event.
A multidisciplinary approach applied to a shallow hydrothermal field of the Panarea Volcanic Complex for a responsible management.
Spagnoli F;
2019
Abstract
A poorly studied shallow hydrothermal vent field of the Panarea Volcanic Complex (PVC) was investigated, combining specific monitoring technologies, to provide new insights into its geological, biological and geochemical features. The investigated site, named "Secca dei Pesci", is identified as one of the area of the PVC were major tectonic, volcanic and hydrothermal activity have been observed. It is located on the SE margin of the Panarea platform and consists of a central bathymetric low bounded by two approximately circular highs, elevated up to 50 m above the flat platform bottom. Evidence of strong exhalative activity were revealed by multibeam and ROV observations, then water column properties were investigated by CTD and pCO2 probes and dissolved benthic flux were measured by benthic chamber deployments. Sediment sampling and ROV images analysis allowed the identification of the macrobenthic assemblage living within the vent-areas and in the nearby seafloor. The utilized multidisciplinary approach, based on an integrated analysis of the physico-chemical, sedimentological and biological characteristics of "Secca dei pesci" hydrothermal field, provide new information on the peculiar environmental conditions of the area and their influences on the associated living communities. Moreover, results of this study improve knowledge on the geochemical dynamics of PVC, helping to understand volcanic hazard and to mitigate the risks of an explosive event.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
