抖阴视频

The National Technical University of Athens contributes to the monitoring of earthquake activity in the wider area of 鈥嬧�婼antorini in the framework of its cooperation with the National and Kapodistrian University of Athens, ELKETHE and other scientific institutions.

The NTUA's Remote Sensing Laboratory owns autonomous ROV and Glider underwater robots to which instruments for measuring physico-chemical and other parameters have been adapted and developed. The robots have the capability to measure at great depths and can stay on mission for days at a time.

Due to the stimulation of earthquake activity in Santorini, a research group consisting of Prof. K. Karanjalo, Dr. Dusko, H. Antoniou, S. Spano and S. Vella and in collaboration with other scientists from National and Kapodistrian University of Athens (Professor Evi Nomikou) on Sunday, February 2, performed measurements at a depth of 500 meters but also throughout the water column in the area of 鈥嬧�媡he underwater volcano Kolumbo in Santorini.

It is noteworthy that in October 2024, the NTUA scientific team had carried out corresponding multi-day measurements in the hydrothermal field of the underwater volcano, so the team was able to directly compare them with those under the current intense earth quake activity of the area.

Early estimates from the analysis of the measurements show that the turbidity of the water in the hydrothermal field at 500 meters depth and for the first 100 meters has increased by 25%, presumably due to intense activity and sediment stirring. Water temperatures that had only been recorded near the hydrothermal chimneys at 500m depth, on Sunday February 2nd were also recorded at 400m depth. During measurements made in October 2024 the composition of the water was changing below about 360m, while now this change was observed from 240m and below

It appears that more than 120 million tons of water have been affected compared to October in the basin/crater of the volcano. Finally, near the chimneys of the hydrothermal field, three times the levels of gamma radiation, which comes mainly from radon, were recorded, while overall, twice the levels of radiation were recorded throughout the water column compared to October 2024.

The NTUA scientific team will continue to assist with measurements and analysis to more effectively monitor the ongoing phenomenon.