Iceland on Monday raised the alert degree for a attainable eruption of its most energetic volcano after a number of small earthquakes have been registered earlier within the day.
Located in an uninhabited and distant space of central Iceland, the Grimsvotn volcano is located below an enormous glacier.
Experts have been monitoring Grimsvotn for a number of weeks after its glacier lake burst, an occasion that might set off a volcanic eruption.
In the newest eruption in 2011, an ash cloud prompted comparatively minor air visitors disruptions, when round 900 flights have been cancelled.
That was thought-about minor in comparison with the eruption a yr earlier of the Eyjafjallajokull volcano, which led to the cancellation of 100,000 flights and stranded 10 million passengers.
The alert degree for the Grimsvotn volcano was on Monday raised to “orange” from “yellow”, resulting from “heightened seismic activity”, the Icelandic Meteorological Office (IMO) stated on its web site.
The color code, designed to tell the aviation trade of the danger of an eruption, means the volcano “is showing heightened activity with an increased probability of eruption”, in accordance with the IMO’s scale.
Code purple means an eruption is taken into account imminent, with a robust probability that an ash cloud may trigger vital disruption to air visitors.
Several quakes measuring a magnitude of as much as 3.6 have been registered on Monday.
While seismic exercise has elevated over the previous two days, no rise within the volcano’s magma has been detected to this point, the IMO stated.
“This seismic activity may be due to the decreasing pressure above the volcano, as the floodwaters have been released from the subglacial lake,” the IMO stated.
A pure phenomenon often known as “jokulhlaup”, the subglacial flooding started round two weeks in the past and reached a peak early Sunday.
The IMO stated measurements confirmed that the ice cap on Grimsvotn’s subglacial lake has subsided by about 77 meters (253 ft).
The easing of stress on the volcano, spurred by the flowing of tens of millions of tonnes of water, can set off an eruption. That was the case in 2004, 1934, and 1922.
Located below Iceland’s greatest glacier Vatnajokull, Grimsvotn final erupted in 2011. Its latest eruptions have occurred each 5 to 10 years.
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