3378 x 5120 px | 28,6 x 43,3 cm | 11,3 x 17,1 inches | 300dpi
Data acquisizione:
13 marzo 2012
Ubicazione:
Italy Sicily Aeolian Island Panarea
Altre informazioni:
Sicilia Eolie Panarea Degassing That night in 2002, I check it, 'recalls the Ingv, ' intense activity 'degassing in the vicinity' of the islets of Lisca Bianca and Bottaro. The activities 'esalativa began with 5 zones of strong gaseous emission in depth' varies from 8 to about 30 meters. The emission of gases and 'so was' intense that the smell of hydrogen sulfide (H2S) was audible at great distances. ""The visible effect on the day-after-scientists still remember was the churning of the sea water in the vicinity 'of the islet of Bottaro, which removed a huge amount' of sediment evidenced by whitish wake dragged away by the current." "The crater was formed, to 20m for 10 and 7 meters deep, continuing the experts-emitting huge amounts of INGV-'of gas, estimated at several million cubic meters a day, several hundred times higher than normal system degassing of the whole area between the submerged islets east of Panarea. And the gas released was warm and had not changed the temperature of the surrounding sea. "But beyond the crater, the INGV scientists still remember, "opened fractures at the bottom of Bottaro and Lisca Bianca emitting quantity 'rising gas and in some cases hot water. The extended length of fractures and 'continued, slowly, for several weeks. "Scientists have carried out immediately "vertical profiles of temperature to determine" if it was issued only other hydrothermal fluids or gases. ""The temperatures measured, showing constant values from the surface to the bottom end, research has established immediately by the INGV-explain-that the activities 'was essentially degassing in the absence of hot fluids, even if small amounts' of thermal water went back together the gas. "
