New cracks have emerged on Anak Krakatau, prompting Indonesian authorities to urge those in the vicinity to be on the alert in case a collapse sets off yet another tsunami.
Volcanic ash up to 11.6 km (38,000 feet) a.s.l. is discernible on latest Himawari-8 satellite imagery, extending to the east, the Darwin VAAC reported 00:41 UTC, Jan 2. At the same time, a secondary plume to 15 km (50,000 feet) a.s.l. is extending to the southwest.
Regular intermittent volcanic ash to 10.6 km (35,000 feet) a.s.l. is moving east. Volcanic ash to 12.2 km (40,000 feet) a.s.l. has now dissipated, the center reported 11:41 UTC.
Dr Dwikorita Karnawati, head of the Meteorology, Climatology and Geophysics Agency, said: “From the latest we have seen from the air, the mountain is sloping and smoke is rising from beneath the sea water. And on the body of the mountain, we can see from the surface, there are cracks that continue to emit smoke,” she said. “The cracks are certainly deep”, unlike normal gaps, she added.
The two cracks – which are close to each other – has sparked some concern for her agency.
“What we are worried about is that if there is another eruption, the cracks might connect and weaken the slope, causing part of the mountain to collapse again,” said Dr Dwikorita.
Dr Karnawati told reporters on Wed, Jan 2: “Of course the hope is that it will not be like what happened (on Dec 22), but we ask the public to be vigilant when they are in the 500m zone around the coast.”
Anak Krakatau, which means Child of Krakatau, is the offspring of the infamous Krakatau volcano whose monumental eruption in 1883 aided a period of global cooling.
Seismic and Volcanic activity has been correlated to changes in our sun.
The recent global uptick in earthquakes and volcanic eruptions is likely attributed to the drop-off in solar activity, coronal holes, and the increase in Galactic Cosmic Rays penetrating silica-rich magma.
Check out these link for more info:
Grand Solar Minimum