This activity coincided with a darkening of the floors of these volcanoes, as a result of fresh lava flows or the sublimation of sulfur deposits seen by the camera on Galileo.
Esta actividade coincide co escurecemento dos chans destes volcáns, coma resultado dos novos chans de lava fresca ou da sublimación dos depósitos de xofre observados pola sonda Galileo.