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Volcano Turrialba erupted at 05:10 a.m. local time on June 2 with its ash and smoke reaching 1,000 meters into the sky, some 70 kilometers east of capital city San Jose. The official volcano authority recorded the eruption as a major one, because what it spewed out were diversified and over its normal output. (Soundbite) GINO GONZALEZ, Volcanologist of Research Institute of Geological Sciences, Unviersity of Costa Rica "It is a large eruption, with different types of energies released. With an earthquake, the seismic energy merely changed into volcanic eruption. With more potential energy, it has swollen and thermal energy and even rocks came out." The gas and ash mainly moved to north, with significant effect expected in the Central Valley, where San Jose and other major cities are located. Turrialba has been very active so far in 2016, with its expulsion of ash, gas, steam and even stones once reaching 3,000 meters high at the most.
Experts have warned people to stay away from the Icelandic volcano Hekla - dubbed the "Gateway to Hell" - as the volcano could blow "at any minute". Experts say pressure is building up within the volcano, and an explosion could occur anytime, without warning. Iceland is located on a divergent tectonic plate boundary on the mid-Atlantic Ridge
Einarsson reveals that Hekla is showing pressure readings which are higher than they were during the eruptions in 1991 and 2000. In its last eruption, Hekla caused a pyroclastic flow, thereby producing a wall of gas and rock that reached 450 mph. Just 30 miles away from Hekla is located another active volcano - EyjafjallajÃ¶kull - which most recently erupted in 2010. The massive plume of volcanic ash produced after the blow went into the atmosphere, resulting in grounding of air traffic over Europe and a knock-on effect on international flights. The shut down of airspace from April 14 to 25 that year had left millions stranded around the world.
That’s why it is a little peculiar that Dr. Páll Einarsson of the University of Iceland warned people and airplanes to “stay away” from Iceland’s Hekla based on his interpretation of accumulated strain at the volcano. According to reports coming out of Iceland, Dr. Einarsson says that strain measured on these strain gauges is higher than it was prior to the 2000 eruption. Also, it has been 16 years since Hekla’s last eruption and, at least for a brief period from 1970-2000 (mind you, this is a very short time for the lifespan of any volcano), it was erupting about every 10 years. Put those together and he thinks that Hekla is ready for its next eruption, and it could happen soon.
Scientists also don’t have strain data going back further than the 2000 eruption of Hekla, so they don’t have a good baseline for understanding exactly how the strain changes before every eruption—just what happened prior to the 2000 event. That’s not to say that they shouldn’t expect something similar, but the data is somewhat scant.
originally posted by: muzzy
a reply to: muzzy
currently the total is at 557 at SW Niigata
and that doesn't include about 80 across the invisible Prefecture border in Western Nagano, which I didn't include yet because that Pref. is quite big and there are other quakes going on on the other side which are not directly related, so that Pref. has to be sorted separately by Longitude.
This series has 164 duplicate Lat,Long combinations
SW Niigata page