Wir freuen uns über Ihre Mithilfe!
Wenn Sie interessante Nachrichten zu Vulkanen haben, sich gerade an einem Vulkan aufhalten oder dort arbeiten, zögern Sie nicht, uns eine Nachricht dazu zu hinterlassen oder uns über
info(AT)volcanodiscovery.com zu kontaktieren. Vielen Dank!
Mittwoch, Mai 16, 2012
Earthquake swarm at Katla volcano on 15 May 2012 (Icelandic Met Office)
Katla volcano continues to show signs of increased unrest. A small glacial flood occurred from under the volcano's icecap Katla around 28 April 2012 and possibly again around 7-8 May, both times accompanied by increased levels of harmonic tremor. This suggests that magma movements inside the volcano might be heating up the ground, causing increased melting.
...mehrA small seismic swarm at depths of 1-2 kim occurred yesterday 15 May. [
less]
[
alles lesen]
Montag, Mai 14, 2012
A slight increase of seismic activity has been noted recently. On 12 May, 5 small quakes occurred in the western part of the island at depths of 2-17 km. It is unlikely that this is a precursor of a new eruptive phase, but rather reflects residual magma movements and minor tectonic adjustments at the recently emplaces dikes beneath the island. [
alles lesen]
Donnerstag, Mai 10, 2012
Mittwoch, Mai 09, 2012
The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows:
...mehr--
new activity --- [
less]
[
alles lesen]
Kīlauea's lava flows have surged in activity on the coastal plain accompanying inflation at the summit, though following by about 24 hours. This activity is farther from the ocean than before, relatively close to the base of the pali but moving quickly across cooling flows from the previous two months. Check out our new time-lapse movie showing the height of activity! [
alles lesen]
Dienstag, Mai 08, 2012
Samstag, Mai 05, 2012
Since entering the National Park, lava flows have continued to slowly advance towards the ocean but have not made much ground. Pressure variations propagating through Kīlauea volcano have kept the flows from building momentum, but they have persisted sluggishly and lava flows are still visible by means of a 6-7mi / 9-11km round-trip hike from the Kalapana side. When the lava is flowing more slowly (like right now), it actually gives us a chance to approach and interact with it more easily, whereas more vigorous flows require additional safety considerations. For non-hikers, strong glow continues from the summit, visible from Jaggar Overlook & Museum! [
alles lesen]
Since about 2 hours ago, tremor from Etna has started to rise steeply, suggesting that the next (26th) paroxysm of the New SE crater is probably imminent. At the moment, visible observations are difficult due to cloud cover, but it could be expected that there is some strombolian activity right now from the crater.
...mehr [
alles lesen]
Freitag, Mai 04, 2012
Donnerstag, Mai 03, 2012
Nicaragua's Masaya volcano, located about 20 km south of Managua city, has entered a new eruptive phase. The latest report of the Instituto Nicaragüense de Estudios Territoriales (INETER) mentions 24 small ash and steam explosions that were recorded between 30 April and 1 May. 9 of these explosions produced ash clouds that rose about 500 m above the Santiago crater rim.
...mehrThe activity followed an increase of elevated SO2 emissions and seismic activity detected in late April. According to reports, the degassing from a crack in the main crater was accompanied by jet-like sounds, and internal rumblings can be heard at the volcano.
Latina Press mentions that scientists are closely monitoring the new activity, but so far, no emergency has been declared and the Masaya Volcano National Park remains open. [
less]
[
alles lesen]
Plume of Mt Curry on 27 April 2012 seen on Aqua satellite (NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team)
A new eruption on the remote Zavodovski Island in the South Sandwich island chain was detected by NASA's Aqua satellite on 27 April 2012.
...mehrThe satellite picture shows a plume originating from the island's active crater known as Mt Curry, or sometimes also referred to as Mt Asphyxia. It is possible that the plume is created by lava flows in contact with sea water, as it appears to be mainly steam.
Not much else is known about the eruption, because the island is uninhabited and extremely remote and has no monitoring on the island. Most of the information about this eruption will rely on remote sensing (satellite observations). [
less]
[
alles lesen]
The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows:
...mehr--
new activity --- [
less]
[
alles lesen]
Mittwoch, Mai 02, 2012
Ash eruption at Popocatépetl volcano on 2 May 2012 (CENAPRED webcam images)
Popocatépetl volcano continues to produce ash and steam eruptions several times a day, that generate plumes rising up to 1-2 km above the crater. A more powerful emission is in progress at the time of writing (see image). [
alles lesen]
A recently published study shows that Mt Merapi volcano near Yogyakarta has been inflating during the past 2 years, following its last and deadly eruption in 2010.
...mehrAccording to the study, Merapi has entered a new cycle of inflation which is a typical precursor of a new lava dome-building eruption caused by rising magma within the conduit of the volcano. At the moment, there is no way to predict when exactly the next eruption will start, but given that it is one of the world's most active volcanoes, it might not be in a too long future. [
less]
[
alles lesen]
Sonntag, Apr 29, 2012
Since last night (28 April), new strombolian activity has been observed from Etna's New SE crater. With all likelihood, this announces another paroxysm to occur in the next few days. This would then be the 26th since 2011 when the series of eruptions began, or the 7th in 2012. [
alles lesen]
Samstag, Apr 28, 2012
Nyamuragira volcano in the DR Congo might be forming a new lava lake in its summit caldera.
...mehrThe volcano's last eruption from the Kimanura fissure NE of the summit caldera seems to have ended by now. Until early to mid March, a lava lake was observed in the eastern vent and a strong heat source could be detected on satellite imagery, but has now disappeared.
Seismic explosion signals from a source under the summit were noted on 24 February from the summit crater and overflights showed increased degassing from the central pit, which contained a lava lake until 1940. This activity increased in April and a strong SO2 odor from this area suggests the presence of near-surface magma. Scientists and the park rangers are speculating about the possibility that a new lava lake in the summit crater might be about to form. [
less]
[
alles lesen]
Mittwoch, Apr 25, 2012
Active lava flows continue to advance on Kīlauea's coastal plain and have now entered the narrow coastal strip of the National Park known as the Kalapana extension, reaching within 0.9 km /0.6 mi of the Pacific Ocean. Access to this area from the end of Chain of Craters Road within the National Park is estimated to be 8-9km / 5-6 miles EACH WAY, while only about 3 miles each way from the typically upwind Kalapana side (which requires private land access). [
alles lesen]
Montag, Apr 23, 2012
11 days following the last eruption, the 25th paroxysm of Etna's New SE crater is happening at the time of writing in the evening 23 April. It started around 16:00 hrs local time with week Strombolian explosions accompanied by a steeply increasing tremor. [
alles lesen]
Samstag, Apr 21, 2012
Weak ash emissions from deep strombolian activity within the New SE crater has been observed since last evening (20 April). If the eruption patterns remains more or less the same, a new paroxysm is probably under way within the next days. [
alles lesen]
Donnerstag, Apr 19, 2012
The past week was characterized by an important increase of Popocatéptl volcano's activity in Mexico and one of the Etna's most spectacular recent episodes of fire fountaining.
...mehrThe new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows:
[
less]
[
alles lesen]
The weekly Smithsonian/USGS volcanic activity report summarizes the recent increase of Popocatépetl volcano as follows:
...mehrDuring 11-15 April steam-and-gas emissions from Popocatépetl occasionally contained ash; emissions contained a substantial amount of ash on 12 April.
Seismicity increased on 13 April and at 2220 an explosion ejected incandescent blocks that landed on the NE flank as far as 500 m away from the crater rim. A larger explosion at 2236 ejected incandescent blocks that landed even further away on all flanks; an ash plume rose 2 km above the crater and drifted ENE. Ashfall was reported in San Pedro Benito Juarez (10-12 km SE), where the explosion was also heard. [
less]
[
alles lesen]
eruption plume from Reventador on 18 April (photo: L. Gomezjurado / IG)
Reventador continues to be mildly active with ongoing weak to moderate steam and ash emissions. The Instituto Geofísico reports a 2 km high column of steam and ash rising from Reventador volcano on 18 April. The ash cloud moved to the NW.
...mehrIG characterizes the actual activity level (visual and seismic activity) of Reventador "moderate". No major changes have been observed at the volcano in recent days. [
less]
[
alles lesen]
According to setyoufreenews.com, Mt Lamington volcano in New Guinea is showing some signs of becoming active. According to the brief news, locals from the community of Popendetta reported "smoke and ash emission on March 25". No original source or other reports could be located so far to confirm new activity.
...mehrMt Lamington volcano is an andesitic stratovolcano with a 560 m high summit lava dome that grew during 1951-56, following a brutal reawakening with a major explosive eruption in 1951, which produced lava flows and devastating pyroclastic flows, and killed about 3-4000 people. [
less]
[
alles lesen]
Lava levels in Kīlauea's newest crater, the Overlook Vent within Halema‘uma‘u, have reached their highest point of 70m / 230ft below the 1974 crater floor, matching conditions in March 2011 just prior to the 5-day Kamoamoa fissure eruption. Glow from the edge of Kīlauea caldera has been strong over the past month, except on exceptionally rainy nights! Speaking of the volcano's summit, it has been swelling significantly over the past 6 months - a total increase of 6cm / 2.4in across the caldera! This is not as fast as the previous 12 months, but still notable!
...mehrMeanwhile, lava flows on the coast persist and are less than 1.4km / 0.9mi from reaching the ocean, but don't seem to be in a hurry to get there. The flows are still quite active, but spreading out across the plain rather than focusing in one direction. They are still accessible and the hike (with proper access across private land) is getting shorter! At some point soon, there may be the chance to safely see an ocean entry, that is if nothing else changes in the meantime... stay tuned! [
less]
[
alles lesen]
Mittwoch, Apr 18, 2012
Column emission of the Tungurahua volcano ash observed on the morning of April 17, 2012
At 06:19 (local time) today, April 17, 2012, there was a further increase in the activity of the Tungurahua volcano, the Instituto Geofísico (IG) reported.
...mehrA constant seismic tremor signal of high energy accompanied the generation of a steam and ash eruption column which reached a height of 5 km above the crater during a few minutes. The ash cloud drifted to the north and then to the north-west. No significant noises or roars were heard.
Ash fell in the areas of Baños de Agua Santa, Runtún and Juive. At the Tungurahua Volcano Observatory, located 14 km north west of the volcano, only slight ash fall was recorded. [
less]
[
alles lesen]
CENAPRED has raised the alert status of Popocatépetl to the third highest level (5 out of 7) and considers the possibility of a major eruption. The volcano continues to have elevated levels of seismicity, and produces frequent steam and ash emissions raising about 1 km above the crater.
...mehrLocal authorities are preparing for potential evacuations. The last time evacuations were ordered on a large scale was in 2000 when over 50,000 people had to leave their homes.
The major hazards of a larger eruption would be ash falls, pyroclastic flows, lahars produced by mixing of water and tephra. [
less]
[
alles lesen]
The crater lake Kawah Ijen on 7 April 2012 (photo: Andi / VolcanoDiscovery)
Ijen volcano in East Java has calmed down again, although its alert level is still at 3 (out of 4).
...mehrOur expedition leader Andi visited the volcano and the observatory and confirms that seismic activity and degassing from the lake have decreased during the past 2-3 weeks. However, PVMBG ( the Volcanological Survey of Indonesia) still keeps the status at level 3 ("eruption warning") and the crater is off-limits to tourists. [
less]
[
alles lesen]
Dienstag, Apr 17, 2012
View of the upper SE flank of Sangay volcano and thermal image showing the various vents at the dome emitting lava flows that form several branches and reach the base of the summit cone (Photo: P. Ramón OVT/IG)
During an overflight on 13 April, an explosion from Sangay volcano was observed at 08:25 local time. It generated an ash and steam column of 2 km above the summit crater.
...mehrA new vent was detected, both on visible and thermal images, located next to the active dome on the SE flank (Ñuñurqu). The activity in this area has intensified since October, when the last aerial survey had taken place.
Extensive lava flows are descending on the SE flank of the dome and reaching the base of the cone. [
less]
[
alles lesen]
Upper western flank of Tungurahua and thermal image from the NE side, with the hot spots corresponding to still hot ejected blocks (photo: P. Ramón OVT/IG)
During an overflight on 13 April, geologists from IG observed weak but continuous steaming from Tungurahua volcano.
...mehrThe crater geometry, nearly circular and 214 m in diameter, had not changed significantly since October 2011. Fumaroles were active at the E and W rim.
Thermal measurements indicated a maximum temperature of 171°C in the crater, 20°C more than in October 2011. A thermal anomaly was observed at the eastern outer rim of the crater. Near the rim of the inner crater, a 10-15 m large block with temperature of 147°C was observed, as well as other large blocks with temperatures of up to 173°C were found nearby. These blocks were probably ejected during the recent explosions. [
less]
[
alles lesen]
Montag, Apr 16, 2012
Popocatepetl volcano near Mexico City had one of its largest eruptions this year yesterday 16 April. An explosion produced an ash plume rising 2 km and caused ash fall, up to 7 cm thick, in over 30 communities near the volcano. Strong incandescence can be seen at night from the summit, suggesting that fresh magma is arriving there building up a new lava dome.
...mehrAn 12 km exclusion zone was declared around the volcano. [
less]
[
alles lesen]
Sonntag, Apr 15, 2012
Donnerstag, Apr 12, 2012
The 24th paroxysm occurred today at Etna's New SE crater. The main phase lasted between 16:30-17:15 local time and produced tall lava fountains and a lava flow. [
alles lesen]
Another unexciting week in terms of volcanic activity has passed.
...mehrAs usual, the new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows:
[
less]
[
alles lesen]
All signs point towards a new paroxysm at Etna's NSEC during the next hours: continuing strombolian activity, steeply rising tremor. [
alles lesen]
Mittwoch, Apr 11, 2012
Column of the Tungurahua volcano emission observed after the explosion at 08:56 (local time) of April 11, 2012
A moderately large explosion occurred at Tungurahua volcano today at 08:56 (local time). The eruption generated an ash column of 4-5 km height above the crater. The ash at lower altitudes drifted north-east, east and south-east the lower column, and ash from the upper parts of the eruption column to the north-west.
...mehrThe explosion ejected incandescent blocks to distances up to 500 to 600 meters below the crater rim on the northeast side. Seismically the explosion was followed by a signal of high-energy tremor that lasted about 40 minutes.
The explosion was heard in villages near the volcano and at the volcano Tungurahua Observatory (OVT), located 14 km north-west of the volcano. [
less]
[
alles lesen]
After 7 years of closure, following the tragic accident of the roof collapse of the newly built shelter in 2005, the archeological site of Akrotiri on Santorini (Greece) is now open for visitors again. [
alles lesen]
A small earthquake swarm has been occurring at the western margin of the caldera during the past few days. The swarm consists of about 10 quakes of 1-2 magnitude at 7-8 km depth. [
alles lesen]
Strombolian activity has resumed at the New SE crater of Etna last night. Most likely, this is a precursor for a next paroxysm during the coming days. [
alles lesen]
Dienstag, Apr 10, 2012
Die kolumbianischen Behörden haben für das Gebiet um den Vulkan Nevado del Ruiz die Alarmstufe Rot verhängt und warnen vor allem vor den gefürchteten Schlammlawinen (Lahare), die bei einem Ausbruch des Vulkans zu erwarten sind.
...mehrGrund ist ein stetiger Anstieg der seismischen Aktivität und des Gasausstoßes vom Gipfelkrater. In den letzten Tagen wurden vermehrt meist kleine, aber teilweise auch spürbare Erdbeben registriert. Aus dem Krater steigt eine bis zu 1.5 km hohe Dampf- und Gassäule aus Schwefel- und anderen vulkanischen Gasen auf. In weitem Umkreis um dem Vulkan ist Geruch nach faulen Eiern wahrzunehmen.
430.000 Bewohner in den Tälern des Río Chinchiná, Manizales und weiteren vier Flüssen wurden vor Schlammlawinen und Überschwemmungen gewarnt, die bei starken Regenfällen auch ohne Ausbruch des Vulkans ausgelöst werden könnten. [
less]
[
alles lesen]
Ash emission from Tungurahua on 9 April (photo: IG)
Tungurahua volcano's activity is again increasing.
...mehrStarting at 07:10 local time on 9 April, a continuous tremor signal of high energy was detected and the volcano started to erupt a continous column of ash, which rose within few minutes to 2 km height and drifted to the south, and later increased to about 3 km height above the crater.
Constant rumbling noises, similar to turbines were reported. [
less]
[
alles lesen]
We have created a new website that provides an easy-to-use interface to view various volcano webcams and some other online data in one site:
...mehr [
alles lesen]
Ash venting at Krakatau on 7 April 2012 (photo: Øystein Lund Andersen)
It appears that a new vent has opened at the new lava dome of Anak Krakatau volcano and started to emit ash, as Øystein Lund Andersen reports from a recent visit:
...mehr"The crater was illuminated by lava (dome) in the night, the location of the light is the southern part of the crater. [
less]
[
alles lesen]
Freitag, Apr 06, 2012
The new vent at Soufrière Hills volcano (Greg Scott, Caribbean Helicopters)
The Montserrat Volcano Observatory reports that a new vent has been observed in the location where ash venting occurred on 23 March 2012. The vent is located in the floor of the 11 February 2010 collapse scar, immediately south of the remnants of the old English’s Crater wall and southwest of the long-lived hottest fumarole previously identified. It is estimated that the vent is between 30 and 50 m across.
...mehrNo further ash venting has occurred since 23 March. [
less]
[
alles lesen]
Donnerstag, Apr 05, 2012
Another volcanically relatively quiet week has passed. Some exceptions were April's Fool's day eruption at Etna, and ongoing strong eruptions at Shiveluch in Kamchatka (where activity needs to be colossal to make the news.)
...mehrSeveral volcanoes have calmed down and been set back to lower alert levels. As usual, the new Smithsonian / USGS Weekly Volcanic Activity Report has been issued today and is summarized as follows:
[
less]
[
alles lesen]
Mittwoch, Apr 04, 2012
Few more news have appeared about the sudden warming of Askja volcano caldera lake. From what I this news say. It seems that this sudden melt of ice in Askja lake did start in beginning of March, by the end of March the lake had gone completely ice free. This is highly unusual and is not known to have happened before. This increase in hydro-thermal activity seems to be located at the bottom of the lake. But so far there is no new change around Askja lake. But it was reported yesterday that known hydro-thermal areas in Askja volcano where well active. It is now being reported that Askja lake got ice-free over period of two weeks so. But that is highly unusual and fast change in Askja lake. [
alles lesen]
During the past days, a new earthquake swarm has been occurring near Santorini. This time, it is in an unusual location about 15 km south of the island, not on the principal volcano-tectonic SW-NE line crossing the caldera. [
alles lesen]
Dienstag, Apr 03, 2012
Nevado del Ruiz seems to be getting closer to a new eruption. INGEOMINAS reports that during the last week, there has been a significant increase in the activity of the volcano, which can be summarized as follows:
...mehr- From March 27, there have been phases of volcanic tremor pulses related probably to deep magma movements
- Since the last week, there were seismic signals interpreted with rock fracturing, i.e. dike intrusions, located west of the active crater. Similar seismic activity was observed prior to the eruptions in November 1985 and September 1989, although this time it is less energetic. [
less]
[
alles lesen]
7-days summarizing image of Ambrym and other Vanuatu Islands, showing the hot spot at Ambrym (MODVOLC)
Ambrym (Vanuatu) is showing signs of activity. After a longer period of silence on Modvolc, a strong thermal signal is again visible at Marum and Benbow craters on the MODIS Global Hot Spot monitoring tool from the University of Hawaii (ModVolc).
...mehrIt is difficult to obtain reliable information about the lava lakes of Ambrym during cyclone season (November until March). Often, large clouds cover the island, which makes visual observations hard. Also, our local contacts rarely climb the volcano during cyclone season.
[
less]
[
alles lesen]
Montag, Apr 02, 2012
The Montserrat Volcano Observatory reports a significant decrease in the activity of Soufrière Hills volcano.
...mehrNo more phreatic explosions and ash-venting episodes have been observed since 23 March. Seismic activity has returned to a low level as well and zone C on the island was reopened for day-time visits.
However, the volcano shows strong sulfur dioxide emission, suggesting that fresh magma might be flowing into a shallow reservoir. During 24-26 March, extremely high levels of SO2 emission rates were measured, up to 4,594 tonnes per day, the third highest value measured in 10 years. [
less]
[
alles lesen]
Sonntag, Apr 01, 2012
What already had been becoming evident late last night, the 23rd paroxysm of Etna's New SE crater occurred early during the second half of the night to 1st April.
...mehrThe climax of the eruption with tall lava fountains took place at around 3 am and was relatively short, as during the previous eruption. Lava flowed into the Valle del Bove and the southeastern sector of the Etna and the surroundings received ash fall.
It is interesting to note that interval since the previous eruption, 14 days, was exactly the same as the previous interval. This suggests that once again, a certain rhythm might have established itself, and if that is true, the next paroxysm should be expected around 15 April... [
less]
[
alles lesen]
