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Sonntag, Okt 30, 2005
As the National Institute of Geophysics and Volcanology reports, an increased number of small to medium earthquakes have occurred lately at Etna volcano, the largest one being today (Sun, 30 Oct. 05) at 3.7 magnitude Richter at 08h06 on the southeastern slopes near Pedara, Trecastagni et Nicolosi. Etna has been without eruptive activity since March 2005; new eruptions are expected within a near to medium future (months or few years, possibly less if the recent seismic activity is taken as possible precursor).
Samstag, Okt 29, 2005
The eruption of Sierra Negre continues with lava flows confined to the vast caldera; it does not pose risks to populated areas. In the meanwhile, a group of scientists from the Geophysical Institute of Ecuador have visited the site and posted a detailed report about the eruption's first 3 days: it can be downloaded here.
Dienstag, Okt 25, 2005
The eruption is continuing from a fissure inside the E part of the caldera of Sierra Negre, with lava fountains up to 200 m tall and large lava flows that have now covered about 20% of the caldera floor. Good eruption viewing possibilities are from a lookout on the caldera rim in the El Cura area.
Montag, Okt 24, 2005
Eruption plume of the opening phase of Sierra Negra volcano on 23 Oct. 2005 (photo: Greg Arancea, published on "El Universo" newspaper)
First photographs and more detailed information about the large eruption of Sierra Negre are emerging. As on Monday, 24 October, lava flows from a fissure have travelled 9-10 km away from the fissure. The eruption is accompanied by strong lava fountains. Near the eruption site, the terrain consists mainly of older, unvegetated lava flows. Two flows are travelling towards Elizabeth Bay, while a third one is heading towards Cartago Bay, both uninhabited areas.
Sierra Negra volcano, also called "El Chico", on Isabela Island, Galapagos, erupted yesterday at 17h30 local time. As the Ecuadorian newspaper "El Universo" reports, an ash column estimated between 20 to 30 km high was observed. According witnesses from Santa Cruz island, two lava flows reached Elizabeth Bay, an uninhabitated settlement area close to the volcano. The island's main town, Puerto Villamil, 25 kilometers (15 miles) away, is not threatened by the eruption. Sierra Negro last erupted 1978....mehr
Freitag, Okt 21, 2005
series of new photos, taken by Marco Fulle during the Stromboli to Etna tour (8-16 Oct.) are now online!
Donnerstag, Okt 20, 2005
Volcanic activity at Erta Ale reported previously actually occurred at Dabbahu:...mehr [alles lesen]
Explosions and pyroclastic ejections continued at Dukono during 10-16 October. Ash columns rose 100-950 m above the summit (or 1,200-7,000 ft a.s.l.) and mainly drifted SE. Seismicity was dominated by explosion earthquakes. Dukono remained at Alert Level 2....mehr [alles lesen]
Mittwoch, Okt 19, 2005
This year's second eruption of Piton de la Fournaise volcano was ufficially declared to have ended today, after tremor had ceased abruptly yesterday at 13:10h local time on the 18th of Oct. 2005 while visual observations had yesterday not been possible due to bad weather.
Donnerstag, Okt 13, 2005
Marco Fulle sends this report based on observations made by a VolcanoDiscovery group, who climbed Stromboli on 11 Oct. 2005: Stromboli's activity was significant, with 8 active vents in three clusters (corresponding to the former W, Central and E craters): during 1 hour, they observed 2 faint eruptions from the W vent nr. 1, which is hidden from Pizzo, while stong glow was visible from the second vent in the W crater. During the same time, 5 eruptions occurred from the westermost vent in the central vent complex (the former Central crater), emitting few bombs but lots of gas during its eruptions, and seven (!) eruptions ejecting lava to up to 250 m height were observed from the second central vent, which is now found at the top of a tall cone.
Mittwoch, Okt 12, 2005
The tours this year on Santorini are now over, too, with lots of fun and great company as well. Thanks to all participants!
The eruption at Piton de la Fournaise continues at stable low levels. According to the volcano observatory on the island, the new cone is slowly growing, showing moderate degassing, slightly increased today, weak spattering, and emitting lava flows that are still visible. By now, the new flows have covered 30-50% of the crater floor of Dolomieu crater.Tremor is low....mehr
At shiveluch volcano, the lava dome continues to grow. At any time explosions could produce ash plumes that rise as high as 8 km (or 25,000 ft.) ASL.
Samstag, Okt 08, 2005
The main vent of the new eruption remains active with moderate lava fountains and strombolian activity, emitting a few small lava flows inside Dolomieu crater.
The new cone that has formed in the SE area of Dolomieu crater (Photo published on Réunion's leading newspaper "Le Journal de l'île de la Réunion" - www.clicanoo.com)
Since today, access to the Enclos has been reopened to the public on a temptative basis (on condition that visitors "behave"), but access is limited to the time between 6am and 5:30pm. More details (in French) on the following article.
Freitag, Okt 07, 2005
The eruption at Piton de la Fournaise and volcanic tremor levels have stabilized and continue at low levels. Activity continues inside Domolieu crater, where a small cone of about 10 m height has been formed at the pricipal vent. Lava fountains and strombolian activity atteign heights of about 30 m occur and several active lava flows depart from the vent, sometimes as overflows from its crater that shows frequent inside collapses....mehr [alles lesen]
Donnerstag, Okt 06, 2005
The new fissure eruption of Piton de la Fournaise (photo Serge Gélabert, website of Réunion's leading newspaper "Le Journal de l'île de la Réunion" - www.clicanoo.com).
After a break of 4 months, Piton de la Fournaise volcano started its second eruption this year on October 4th at 14:26, after four months of almost continuous inflation and increased seismicity. A fissure opened inside Dolomieu crater at the same site as the December 2002 pit crater and the Mai-June 2003 eruption, producing lava fountains and lava flows....mehr
Mittwoch, Okt 05, 2005
One week after the start of the eruption of Erta Ale, some details emerge as news reports come in: the crater of the large shield volcano has rapidly filled with fresh lava and possibly overflowed, destroying farmland and killing much livestock. strong strombolian or hawaiian activity is producing thick clouds of ash that shower over the volcano's surroundings....mehr [alles lesen]
Donnerstag, Sep 29, 2005
During 22-27 September, several small explosions occurred at Colima. The largest explosion took place on 27 September at 0507 and produced a plume to a height of ~3.8 km above the volcano (or 25,100 ft a.s.l.). The plume drifted WSW, depositing small amounts of ash in the cities of Colima, Villa de Álvarez, and Comala more than 30 km from the volcano. Due to the threat of lahars forming on the volcano's flanks, Universidad de Colima advised avoiding the ravines of La Lumbre, San Antonio, Monte Grande (in Colima state), and La Arena (in Jalisco state)....mehr
Montag, Sep 26, 2005
Erta Ale volcano in northern Afar, Ethiopia, well-known for its long-lived active lava lake that had occupied its crater up until 2004, erupted yesterday according to unconfirmed reports from local authorities. The eruption followed a series of earthquakes of up to 5.5. magnitude Richter scale that occurred in the area the day before.
Freitag, Sep 23, 2005
Shiveluch volcano started a new eruption on Thursday-Friday night. An ash plume has reached 7.5 km above sea level, and a lava flow is descending 15 km from the summit....mehr
Sonntag, Sep 18, 2005
Colima continues to be at moderately high levels of activity. A strong explosion occurred yesterday on Sept. 16, at 10:46 am local time, producing an ash plume about 5 km high (3 miles). The eruption was accompanied by loud detonations that could be heard in villages up to 15 km away from the volcano. Ash-fall occurred in villages and towns to the northeast of Colima.
Mittwoch, Sep 14, 2005
A relatively stronger, but still small explosive eruption occurred at Fuego on 17 July during 1715-1945 local time, producing an ash plume that rose 3.5-4 km above the volcano's crater (or 23,800-25,500 ft a.s.l.). The eruption was accompanied by small pyroclastic flows that traveled SW down Santa Teresa and Taniluyá ravines....mehr
No reports of activity from Anatahan volcano have been received since 3 September, which indicates that the eruption might be over.
Hello everybody on the tours in Indonesia this summer!
Freitag, Sep 09, 2005
TUNGURAHUA Ecuador 1.47°S, 78.44°W...mehr
ST. HELENS Washington, USA 46.20°N, 122.18°W...mehr
SHIVELUCH Kamchatka Peninsula, Russia 56.653°N, 161.360°E...mehr
Based on information from JMA, the Tokyo VAAC reported that an eruption occurred at Sakura-jima on 2 September at 0927. The resultant ash plume reached a height of ~2.1 km (7,000) ft a.s.l. and drifted NW.
Background: Sakura-jima, one of Japan's most active volcanoes, is a post-caldera cone of the Aira caldera at the northern half of Kagoshima Bay. Eruption of the voluminous Ito pyroclastic flow was associated with the formation of the 17 x 23-km-wide Aira caldera about 22,000 years ago. The construction of Sakura-jima began about 13,000 years ago and built an island that was finally joined to the Osumi Peninsula during the major explosive and effusive eruption of 1914. The largest historical eruption took place during 1471-76.
Source: Tokyo Volcanic Ash Advisory Center
Sakura-jima Information from the Global Volcanism Program
REVENTADOR Ecuador 0.078°S, 77.656°W...mehr
KILAUEA Hawaii, USA 19.43°N, 155.29°W...mehr
KARYMSKY Kamchatka Peninsula, Russia 54.05°N, 159.43°E
DUKONO Halmahera, Indonesia 1.70°N, 127.87°E;...mehr
BARREN ISLAND Andaman Islands, Indian Ocean, India...mehr
ANATAHAN Mariana Islands, central Pacific Ocean 16.35°N, 145.67°E;...mehr
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