Puyehue volcano in Chile erupted on Saturday 4th June 2011 after 51 years of inactivity. On the 3th June a seismic swarm occurred with 1450 earthquakes registered at the volcano, associated with magma movement under the volcano. The earthquakes has a focus of 2-5 km depth on the southeast flank of the volcano. More than 130 earthquakes were greater than magnitude 2. On Saturday 4th of June the volcano alert was raised to level RED after a marked increase in seismic activity. Over a period of six hours there more than 230 earthquakes per hour with a focus of 1-4 km depth. Twelve of the earthquake were greater than magnitude 4.0, 50 greater than magnitude 3.0. More than half the earthquakes were over magnitude 2.0. The largest earthquake occurred at 8:36 am local time on 4th June with a magnitude 4.4. Residents reported felt earthquakes on Friday evening and Saturday morning. The explosive eruption began on Saturday 4th June producing a 10 km high ash column. More than 600 people were evacuated from the area. Volcanic ash fell in the city of Bariloche in Argentina, and the airport was closed. Residents of Bariloche said that ash fell like a snowstorm. The Argentine government has sent military troops to help residents affected by the ashfall. A border crossing between Chile and Argentina at Cardenal Samore was closed due to the eruption creating poor visibility on the mountain pass. The last eruption of Puyehue volcano was in 1960 following a 9.5 earthquake.
More on Puyehue volcano...
Monday, June 06, 2011
Sunday, May 22, 2011
Grimsvotn Volcano, Iceland - John Seach
Keflavík airport in Iceland has been closed due to the eruption of Grímsvötn volcano. Ashfall surrounding the volcano has already reached a thickness of half a centimetre. This is the largest eruption at Grímsvotn volcano in 100 years and larger than the one in Eyjafjallajökull last year. It is similar to the eruption of 1873 at Grímsvotn. A large glacial flood (Jokulhlaup) is not expected. This morning ash emissions reached a height of 15 to 18 kilometres, which is ten times more powerful than the last eruption in Grímsvötn in 2004.
More on Grimsvötn volcano...
More on Grimsvötn volcano...
Grimsvotn Volcano, Iceland - John Seach
An eruption began at Grímsvötn volcano in Iceland at approximately 17:30 UTC, on 21st May 2011. The volcano is located under the Vatnajokull glacier in south-east Iceland. The subglacial eruption sent a plume 20 km high. A 120 nautical mile flight restriction has been placed around the volcano. A group of people stayed in a hut in Grímsvötn volcano the night before the eruption, and had left an midday on Saturday six hours before the eruption started. The group noticed nothing unusual, but another group that climbed Hrútafellstindar in the southern part of Vatnajökull glacier said they smelled suphur on the morning of 21st May. More than one hundred people climbed Öræfajökull, Iceland’s highest peak on Saturday and saw nothing unusual. A flood in Skeidarársandur is expected, and will depend on the exact location of the eruption. Eruptions in Grímsvötn are quite frequent, every ten years on the average and are generally short and small. Many of the eruptions have lasted from one to three weeks, the 2004 eruption lasted only four days.
More on Grimsvötn volcano...
More on Grimsvötn volcano...
Sunday, May 08, 2011
Gamkonora Volcano, Indonesia - John Seach
Seismic activity has increased at Gamkonora volcano, Indonesia. During January to May 2011 an average of two shallow volcanic earthquakes, and one deep earthquake was measured at the volcano per day, and emissions rose 50-100 m above the crater. On 1st May 46 deep earthquakes, and 6 shallow earthquakes occurred. On 2nd May 35 deep earthquakes and 2 shallow earthquakes were detected at the volcano, and emissions reached a height of 300 m above the crater. The smell of sulphur was reported at villages near the volcano. On the 3rd May the alert level at the volcano was increased from Normal (Level I) to Waspada (Level II).
More on Gamkonora volcano...
More on Gamkonora volcano...
Sunday, April 24, 2011
Taal Volcano, Philippines - John Seach
Taal volcano in the Philippines has been placed on level 2 alert due to an intrusion of Magma towards the surface. The temperature of the main crater lake has increased to 31.5 ded C. There has been a small inflation of the volcano. High levels of carbon dioxide have been released in the main crater and seismic activity is elevated. PHIVOLCS has advised the Main Crater, Daang Kastila Trail and Mt. Tabaro are closed to visitors due to the risk of explosion, and emission of toxic gas.
More on Taal volcano...
More on Taal volcano...
Saturday, March 12, 2011
Great Japan Earthquake 2011 and Volcanic Eruptions - John Seach
The Great Japan Earthquake of 2011 (mag 8.9) and its aftershocks, are capable disrupting volcanoes large distances from the epicentre. Very large eruptions are possible after Great Earthquakes. It is possible for eruptions to occur anytime after the earthquake, and the high risk period will last for several months. Japan has ten percent of the world's active volcanoes. The closest active volcano to the earthquake is Narugo, 150 km WNW of the epicentre. Volcanoes near to the earthquake epicentre include:
Kurikoma (153 km), Zao (170 km), Hijiori (195 km), Azuma (200 km), Adatara (200 km), Iwate (205 km), Akita-Komaga-take (210 km), Bandai (220 km), Chokai (220 km), Hachimantai (223 km), Akita-Yake-yama (228 km), and Nasu (250 km).
Volcanoes of Japan...
Kurikoma (153 km), Zao (170 km), Hijiori (195 km), Azuma (200 km), Adatara (200 km), Iwate (205 km), Akita-Komaga-take (210 km), Bandai (220 km), Chokai (220 km), Hachimantai (223 km), Akita-Yake-yama (228 km), and Nasu (250 km).
Volcanoes of Japan...
Great Japan Earthquake (Mag 8.9) and Tsunami - John Seach
Tsunamis from the great Japan earthquake have hit parts of the Pacific Ocean distant from the epicentre. Tsunami heights were 1.5 m in the Marquesas, 2.0 m Crescent City (California), 1.0 m Manus Island (Papua New Guinea), 1.4 m Hilo (Hawaii), 1.7 m Maui (Hawaii), 1.8 m Hokkaido (Japan), Vancouver Island (Canada), 1.3 m Midway Island, 0.65 m Saipan, and 0.7 m Vanuatu.
The Japan earthquake is the 5th largest recorded in the world. The top five earthquakes are: Chile mag 9.5 (1960), Prince William Sound, Alaska mag 9.2 (1964), Sumatra, Indonesia mag 9.1 (2004), and Kamchatka, Russia mag 9.0 (2004).
Volcanoes of Japan...
The Japan earthquake is the 5th largest recorded in the world. The top five earthquakes are: Chile mag 9.5 (1960), Prince William Sound, Alaska mag 9.2 (1964), Sumatra, Indonesia mag 9.1 (2004), and Kamchatka, Russia mag 9.0 (2004).
Volcanoes of Japan...
Subscribe to:
Posts (Atom)
