Could the Greeks be suppressing data related to Santorini/Kolumbos due to undesired impact on tourism or real estate investment which would dry up?
Excellent related PDF research link from Evi Nomikou · Geologist-Oceanographer
Kolumbos submarine volcano (Santorini, Greece): 3.2 magnitude earthquake
At 19h22 GMT (21h22 local time), a 3.2 earthquake occurred at the little-known submarine volcano Kolumbos ca. 8 km NE of Santorini, Island, Greece. This marks one of the largest events in recent months.The submarine volcano whose peak rises to just 18 m below sea level, is located on the tectonically active SW-NE fault system across Santorini which confines most volcanic vents of the Santorini volcanic complex in the past 500,000 years.
Kolumbus volcano last erupted in September 1650 following a year of frequent earthquakes. The eruption produced a large explosive pumice eruption, with ash fall recorded as far as Turkey, and built a temporary island. The main phase of the eruption triggered a devastating tsunami. Toxic gasses killed more than 25 people and hundreds of livestock on Santorini by suffocation (probably H2S).
There is no reason to state that new activity from Santorini or Kolumbus is likely in a foreseeable future but on the other hand, there are very few data available, unfortunately, to judge the situation.
We regret that the Greek monitoring institutes are not publishing more details about the ongoing activity. Access to important earthquake details such as as their depth, are not published (they are available for earthquakes in all the other regions in Greece, raising some suspect why not for Santorini...)
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Evi Nomikou · Geologist-Oceanographer at Department of Geology and Geoenvironment University of Athens
In 2007, I have dived with submersible Thetis of HCMR in the northern part of the crater (500m depth) , just where the active hydrothermal vents are excisted..in 2010 and 2011 aboard E/V Nautilus (www.nautiluslive.org) we have investigated the crater walls and the hydrothermal vent field with ROVs..the first results have been published in the Special Volume of Oceanography (http://www.tos.org/oceanography/issues/issue_archive/24_1-supp.html ) and presented in many International Conferences. We have written scientific papers (accepted-in press)..but the most important is that we have informed the people of Santorini about our results (October 2nd 2010-Bellonio)..the more we know about this active submarine volcano..the more we are impressed with its power!
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