A new paper, published in the journal GeoResJ, reveals the intricate details of the volcanic Kameni islands that lie in the flooded caldera of Santorini, Greece. The Kameni islands started growing shortly after the explosive eruption that formed much of the present day caldera. For the past 3500 years or so these islands have grown in pulses, with each new eruption adding more material to the edifice. In this new paper, we have brought together high-resolution imagery of the seafloor with a digital elevation model of the parts of the islands that emerge above sealevel, and have used this to reconstruct the piecemeal growth of these islands from an analysis of their surface shape. Much more remains to be done, but the fascinating part of the work for me was the dawning recognition of just how little we know about the lifecycle of submarine volcanoes, and how much of the volcanic history of Santorini remains underwater, and essentially untouched.
Funding for this project came from agencies in Greece, the United Kingdom and the United States. Submarine multibeam data were collected from R/V AEGAEO, of the Hellenic Centre for Marine Research (HCMR), in 2001 and 2006, with support from the National Science Foundation. Onshore data were collected during a Natural Environment Research Council Airborne Remote Sensing Facility (ARSF) campaign to the eastern Mediterranean in May 2012, with additional support from the National Centre for Earth Observation (NCEO) and COMET.
P Nomikou, MM Parks, D Papanikolaou, DM Pyle, TA Mather, S Carey, AB Watts, M Paulatto, ML Kalnins, I Livanos, K Bejelou, E Simou, I Perros, 2014, The emergence and growth of a submarine volcano: The Kameni islands, Santorini (Greece), GeoResJ 1–2, 8–18. [Open Access]