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Originally posted by westcoast
Not much going on with this thread lately....hard to keep up with everything!
So ofcourse I keep going back to the volcanic range in my back yard, but I really am a little confused over the latest seismos at Rainier. She continues to be active, with three quakes listed so far just for today. I noticed these wierd signatures a couple of days ago, but figured it was just something wierd going on locally. However, it is intesifying and now there are recordable quakes.
So check out THIS seismo for Rainier. HERE is the link to the main list.
If you go to the main list and click through all the Rainier stations, you will find this on three of them, this repeating....noise. I'm not sure what it is. They look like very sharp spikes...either like very small micro quakes that aren't even registering, or maybe something local like rocks falling.
It appears to start on the 18th and pick up in frequency and strength. I haven't seen this signature there before and it seems to be intensifying so I'm looking for some educated opinions? (or otherwise...)
In the past 48 hours 3 earthquakes occurred at Katla volcano, Iceland. The earthquakes may be due to ice movements within Mýrdalsjökull glacier or magma movement under the volcano. Scientists have been keeping a close watch on Katla volcano, due to the possibility of an eruption triggered by the activity at nearby Eyjafjallajokull. An eruption of Katla volcano has the potential to be more devastating than the current eruption of Eyjafjallajokull.
An active volcano has erupted in Indonesia, spewing ash up to two kilometres into the air. Ash from Mount Baru Jari on Lombok island, near Bali, has damaged crops but the volcano is not threatening villagers. It erupted three times from Saturday night until early Sunday according to Mutaharlin, the island's volcano monitoring official. Lava flowed into a lake, pushing its temperature to 35 degrees Celsius, up from 21 degrees Celsius, while smoke spread 12 kilometres.
COSTA Rica's Arenal volcano has erupted, spewing geysers of lava, ash and toxic gases from its crater and forcing the evacuation of the national park where it is located. The 1633-metre-tall cone-shaped mountain in northern Costa Rica shuddered into activity at 4am this morning issuing eight successive rivers of lava that flowed down its steep slopes, National Volcanology and Seismology Observatory expert Elicer Duarte said. He said nobody was at risk from the eruptions but authorities as a precaution evacuated the Arenal National Park, 80km north-east of San Jose. The Arenal Volcano is one of Costa Rica's major tourist attractions and the park has scores of hotels, restaurants, nightclubs and shopping centres. No estimates were given of how many people were inside the park when the eruption began. Arenal's last major eruption in July 1968 killed 89 people. Smaller eruptions have occurred at least six times over the past 35 years.
For all of you going into withdrawal now that Eyjafjallajökull seems to have quieted down, there are two eruptions of note that aren't in the North Atlantic:
MAY 25 2010 Mountain Baekdu, a dormant volcano on the border between North Korea and China, is showing signs of a possible eruption in the near future, experts warned Tuesday. "Baekdu could erupt anytime soon," said geologist Yoon Sung-hyo at Pusan National University, who has monitored the nation's highest mountain (2,744 meters) for any changes. "A variety of indicators are backing this scenario. The thing we should try to predict is when. It's clear it's imminent." The geologist cautiously raised speculation that an eruption could take place in a couple of years.
Fears are growing that the Katla volcano in Iceland could soon erupt after volcanic activity at the site increased by over 200% in recent days.
Seismic readings of the volcano indicate the tremors around the area have increased substantially.
Four earthquakes were detected near Katla during a 12-hour period on May 21st, more than at any other time since the Eyjafjallajokull volcanic eruptions first occurred in March.
Three earthquakes at the Katla Volcano were reported by the Disaster and Emergency website Hisz.rsoe.hu on Sunday evening. The tremors may have been due to ice movements within Mýrdalsjökull glacier or magma movement under the volcano.
The last earthquake to take place at the volcano was recorded this morning.
The eruption of the long-dormant Eyjafjallajökull volcano has prompted fears among some geophysicists that it might trigger an eruption at the larger and more dangerous Katla. In the past 1,000 years, all three known eruptions of Eyjafjallajökull have triggered subsequent Katla eruptions. The last large eruption at Katla was in 1918 but there have been small eruptions at Katla as recently as 1955.
An eruption of Katla volcano has the potential to be more devastating than the current eruption of Eyjafjallajokull. Geophysicists at Iceland’s Institute of Earth Sciences say Katla would be locally and globally damaging.
Icelandic President Ólafur Grímsson has warned Governments around Europe that a significant eruption at the volcano is ‘coming close’. He said: "We [Iceland] have prepared ... it is high time for European governments and airline authorities all over Europe and the world to start planning for the eventual Katla eruption".
Originally posted by jazz10
reply to post by Vitchilo
Deserves a thread of its own this one
2nd