Savo volcano may erupt in future

16 March 2005 | 11:29 Code : 4816 Geoscience events
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THERE is possibility of the Savo volcano becoming active again in the future, a seismologist said. Speaking to Solomon Star yesterday in an interview Principal Seismology Officer Allision ...
THERE is possibility of the Savo volcano becoming active again in the future, a seismologist said.
Speaking to Solomon Star yesterday in an interview Principal Seismology Officer Allision Papabatu at the Geology Division said the last time Savo volcano erupted was in 1856 which is about some 140 years ago.
Therefore, Mr Papabatu said there is possibility of it becoming active again because in most instances a dormant volcano could become active after more than 100 years.
"Although it’s dormant but on an usual case volcanoes can became active after 100-200 years," Mr Papabatu said.
However, he said the Seismology Division could not predict the exact time for such reaction, which could happened when there is rising temperature of the magma beneath the earth.
But in the case of Savo’s volcano, there had not been much changes in temperature or heat since the last eruption.
"We are currently monitoring the volcano but only through visual observation on the surface of the site, temperature, gases, heat and smoke on a non-frequent bases this is because of lack of logistic support and equipment," Mr Papabatu said.
Three indications, which have been highlighted as signs to the build up of a volcano, are in the increase of gas emission.
Mr Papabatu stated that there are a number of gases that have been emitted from a volcano, which could determine the possibility of explosion, this includes carbon dioxide, nitrogen-oxide, and hydrogen sulfide.
The second sign is the rise of temperature due to the rise of magma from beneath the earth
The other sign being pointed is the bulging of the sides and surroundings of the vent this is when magma beneath the earth comes up and displaces the host rocks.
As part of the mitigation measures in place maps are being drawn to show highly risked areas.
One of the officers at the Mines Department also highlighted that if there’s any possibility of an eruption then Honiara is within the range because an effect of a volcanic blast can reach a wider range of about 10,000km.
The environment could also be affected with the suspension of the dust, which cools down the temperature.
There are other volcanoes in the country, which includes Simbo, Tinakula, and the underwater one at Kavachi.

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