An international scientific study in which members of the University of Granada and the Canary Islands Institute of Volcanology (Involcan) participated, The “warm heart” of magma under the island of TenerifeIt’s located less than 10 kilometers from the mouth of the Teide volcano, and this could be a sign harbinger of an explosive process.
The finding is the result of a scientific collaboration between researchers. Trofimuk Institute of Petroleum Geology and Geophysics From the University of Novosibirsk, Russia, Involcan and Granada. The research revealed Inner secrets of the island of Tenerife The University of Granada reported through a new seismic tomography study that included analysis of microseismicity in the interior of the island.
As Involcan explains, these results Check and interpret the seismicity increase in Tenerife and indeed carbon dioxide emissions from the Teide crater, a process the institute has been detecting since late 2016.
This activity may be related to the slow rise of a diapir, a ‘magma bubble’, from Mount Teide at depths greater than 10 km. Therefore, this new information will be very useful to detect and thus predict more quickly the herald signs of a possible eruption process in Tenerife.
According to the researchers, tomography clearly shows that, The crust below the Las Cañadas calderaThe existence of small magmatic reservoirs is possible at depths of less than five kilometers.
very explosive explosions
These reservoirs allow the magma to cool, changing its chemical composition to phonolite, a potentially explosive type of magma. These magmatic reservoirs source of highly explosive explosions Scientists explain it as one of the six Plinian types that occurred at the Montaña Blanca volcano about 2,000 years ago.
The research also explains why explosions in Tenerife What happens outside the caldera of Las Cañadas has a more exuberant character.
The results of this research were published in the journal recently. Journal of Geophysical ResearchOne of the most relevant international scientific journals in geophysics, published by the American Geophysical Society.
This work was made possible as a result of the 2016 launch of the Canary Islands Seismic Network, currently owned and managed by the Canary Islands Institute of Volcanology. 19 broadband seismic stations This allowed the sensing and locating capacity of thousands of micro-earthquakes in Tenerife to be reduced.
The data, together with those previously recorded by the National Geographic Institute (IGN), made it possible to use seismic tomography. explore the interior of the island Determine the velocity S of seismic waves up to 20 kilometers deep and most sensitive to the presence of hydrothermal fluids and magma.
Reference work: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JB025798
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