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Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

volcanic activity

Publié le par Bernard Duyck
Publié dans : #volcanic activity

The Rincon de la Vieja was again erupted on January 20 at 1:26 local time, lasting 5 minutes. The height of the plume could not be known given poor visibility conditions.

On Gavilán's webcam in Upala, incandescence and block projection were observed; a lahar is reported in Río Penjamo, Río Azúl y la Azufrada.

Rincon of La Vieja - explosion and lahar from 20.01.2019 - Ovsicori webcam & Oscar Alvarado "Mapache"

Rincon of La Vieja - explosion and lahar from 20.01.2019 - Ovsicori webcam & Oscar Alvarado "Mapache"

Vidéo Ovsicori

During the current eruptive period (2011-present), the number of eruptions has increased.
During the year 2018, the quantity of seismic signals associated with eruptions decreased in quantity and in seismic energy.

However, in January 2019, eruptive activity increased.

The main events occurred on January 17, 2019 at 1:29 pm 1:29 and the morning of January 20th at 1:26 pm 1:26, both of which resulted in the expulsion of solids and liquids from the bottom. They were transported from the active crater by rivers and rain, in particular by the rivers Pénjamo, Azul, Quebrada Azufrada, Gavilán and Pizote to the lower parts of the northern sector of Rincon.

The other eruptions occurred on January 1 at 5:56, January 11 at 2:25 and 9:11, and January 14 at 1:17.

 

Sources: Ovsicori, RSN-CNE and RSN-OSIVAM

Webcam located in Kozyrervsk, about 50 km (31 miles) west of Bezymianny - Credit: Kamchatka Branch of the Geophysical Survey RAS / 2017-12-20 03:55 UTC

A strong explosion occurred on January 20th at 16:10 UTC at Bezymianny / Kamchatka; the explosion was accompanied by a plume at more than 10,000 meters asl; the cloud of ash then drifted northwest for 590 km.

A large plume of gas and vapor, little ash-laden continued to be emitted at about 3,500-4,500 meters

The aviation code changed to red at 22:43 UTC, before being lowered to orange on 21 January at 2:56 UTC; the danger of ash explosions persists.

 

Sources: KVERT & VAAC Tokyo

Bezymianny - Volcanic Ash Advisory for 20 and 21.01.2019 - Doc. VAAC Tokyo - one click to enlargeBezymianny - Volcanic Ash Advisory for 20 and 21.01.2019 - Doc. VAAC Tokyo - one click to enlarge

Bezymianny - Volcanic Ash Advisory for 20 and 21.01.2019 - Doc. VAAC Tokyo - one click to enlarge

For those who could not see the show on France Ô /  Passion Outremer episode 10 on the Piton de La Fournaise, here is the link: https://www.france.tv/france-o/

 

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Publié le par Bernard Duyck
Publié dans : #volcanic activity
Fuego - 18.01.2019 - photo Elvis Morales Delegado Departament / Conred

Fuego - 18.01.2019 - photo Elvis Morales Delegado Departament / Conred

 Fuego - 19.01.2019 / 12:26 pm cam. therm. - Insivumeh

Fuego - 19.01.2019 / 12:26 pm cam. therm. - Insivumeh

In Fuego, Guatemala, low white outgassing is interspersed with weak to moderate explosions at a rate of 7-11 per hour, accompanied by ash plumes at 4,600-4,800 m asl., then moving to a south and west sector over 10-15 km.

During the night and the morning of January 19, incandescent emissions are observed at 150-300 m above the crater, generating avalanches in the contours of the crater, some reaching the vegetation in the direction of the Seca, Taniluya, Ceniza, Trinidad and Las Lajas barrancas.

Falls of ashes are reported on San Pedro Yepocapa, Morelia, Santa Sofia, Finca Palo Verde, Sangre de Cristo, and Panimache.

 

Source: Insivumeh

Etna - 19.01.2019 - Degassing and ashes at NE crater - photo Gio Giusa

Etna - 19.01.2019 - Degassing and ashes at NE crater - photo Gio Giusa

Short news  in photos of Etna: important degassing in the evening of January 19th, and emission of ashes from the northeast crater; fumaroles at the foot of the new crater southeast.

 

Sources: authors of photos cited, webcam LAVE

Etna - 19.01.2019 / 18h - Emission of ash at NE crater - photo Salvatore Lo Giudice

Etna - 19.01.2019 / 18h - Emission of ash at NE crater - photo Salvatore Lo Giudice

Etna - 19.01.2019 / 17h27 - fumaroles at the foot of the NSEC and ash emission at NE crater - webcam Lave

Etna - 19.01.2019 / 17h27 - fumaroles at the foot of the NSEC and ash emission at NE crater - webcam Lave

On January 17 around 1:30, the Rincon de La Vieja presented a moderate phreatic eruption (or phreatomagmatic, in laboratory determination) at the acidic lake.

Spotted on the seismogram with a signal of 2 minutes, it ejected solid and liquid materials that were transported by the rains and rios to the bottom of the massive, north side.

Gray sediments and fine granulometry, with a muddy texture, polluted the various rivers, Penjamo, Quebrada Azufrada, Río Azul, and Pizote, where dead fish and one caiman were found.

A pH measure shows water acidification, with values ​​of 0.96; the electrical conductivity shows a high content of dissolved salts, and the turbidity measurements of a large amount of colloidal particles in suspension.

 

Source: Ovsicori / Costa Rica

The Río Azul in the area of ​​the municipality of Gavilán de Upala, laden with sludge from the Rincón de La Vieja - photo Ovsicori 17,01,2019

The Río Azul in the area of ​​the municipality of Gavilán de Upala, laden with sludge from the Rincón de La Vieja - photo Ovsicori 17,01,2019

La Quebrada Azufre at the crossroads of the community of Dos Ríos de Upala, with a dense load of muddy material thrown from the main crater of Rincón de la Vieja - photo Ovsicori 17,01,2019

La Quebrada Azufre at the crossroads of the community of Dos Ríos de Upala, with a dense load of muddy material thrown from the main crater of Rincón de la Vieja - photo Ovsicori 17,01,2019

Kerinci volcano, on the island of Sumatra, erupted on 19 January at 7:34 local time, which was accompanied by a thick plume of ash 200 meters above the summit crater.

The level of activity is 2, with a prohibited area of ​​3 km radius.

 

Source: PVMBG, BNPB

Kerinci - 19.01.2019 / 7:34 local - webcam PVMBG

Kerinci - 19.01.2019 / 7:34 local - webcam PVMBG

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Publié le par Bernard Duyck
Publié dans : #volcanic activity, #Tectonique

A small eruption marked the Agung, on the island of Bali, this January 19, 2019 at 2:45 local; the amplitude on the seismogram is 23 mm and the duration of 128 sec. A plume 700 meters high above the crater could be observed, as well as the projection of incandescent materials on the upper east flank, with a range of up to 1,000 meters from the edge of the crater.

The activity level remains at 3 / Siaga.

Source: PVMBG, Magma Indonesia, Tribun Bali

A gray plume overhangs Karangetang volcano, north of Sulawesi, on the morning of January 19, followed by a white plume of steam and gas up to 150 meters.

The activity level remains at 3 / Siaga, with a 2.5 km zone around the two craters, extended to 3 km direcyion NW.

The seismicity of January 18 is characterized by 39 earthquakes of eruption, 37 earthquakes of breath, an episode of harmonic tremor and a continuous tremor of dominant amplitude of 0,5 mm (0,25-1 mm).

Sources: PVMBG, Magma Indonesia, Sentinel 2.

Karangetang - plume observed on 19.01.2019 / 6:09 AM WITA - webcam PVMBG - Magma Indonesia

Karangetang - plume observed on 19.01.2019 / 6:09 AM WITA - webcam PVMBG - Magma Indonesia

Karangetang - flow from the north crater, and incandescence to the south crater, with gas emissions to the two summit craters towards the southeast - Sentinel 2 bands image 12,11,4 of 19.01.2019 - one click to enlarge

Karangetang - flow from the north crater, and incandescence to the south crater, with gas emissions to the two summit craters towards the southeast - Sentinel 2 bands image 12,11,4 of 19.01.2019 - one click to enlarge

At Merapi, on Java, the observations of incandescent block falls from the dome follow one another, the PVMBG reports 28 episodes on January 18, and 11 on January 19 at 12 noon local time.

The course of these flows could not be determined due to heavy rains on the summit.

Source: PVMBG

 

 Merapi - the summit under heavy rain storms on 18.01.2019 / from 17h15 loc. - image BPPTKG

 Merapi - the summit under heavy rain storms on 18.01.2019 / from 17h15 loc. - image BPPTKG

Merapi - seismicity on 18.01.2019 - Doc. PVMBG

Merapi - seismicity on 18.01.2019 - Doc. PVMBG

In Kamchatka, the growth of the Sheveluch dome continues; extrusion is accompanied by fumarolic activity, incandescent block flows, and small pyroclastic flows.

Sources: Volkstat and Sentinel 2 / via P.Markuse

 Sheveluch - On the night of January 17 to 18, 2019, a small pyroclastic current towards the Baydarnaya River - photo Y.Demyanchuk / Volkstat

Sheveluch - On the night of January 17 to 18, 2019, a small pyroclastic current towards the Baydarnaya River - photo Y.Demyanchuk / Volkstat

 Sheveluch - Sentinel image 2 Nat colors / IR highlights 18.01.2019 via Pierre Markuse

 Sheveluch - Sentinel image 2 Nat colors / IR highlights 18.01.2019 via Pierre Markuse

A tectonic earthquake of Magnitude 4.2 (after revision) was recorded on January 18, 2019 at 6:36 am local time in the Canary Islands archipelago, between Tenerife and Gran Canaria in the Enmedio volcano area.

A controversy, or lack of precision / coordination, is emerging as to the depth of the earthquake; InVolcan provides information about 5 km, IGN.es 14 km and EMSC 37 km.

Has the submarine volcano of Enmedio been affected ?

To be continued ...

Conflicting sources: InVolcan, IGN ES, EMSC

Canaries - earthquake of 18 January 2019 at 6:36 am local time between Tenerife and Gran Canaria - Doc. EMSC

Canaries - earthquake of 18 January 2019 at 6:36 am local time between Tenerife and Gran Canaria - Doc. EMSC

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Publié le par Bernard Duyck
Publié dans : #volcanic activity
Cleveland dome - photo J.Schaefer / AVO / 17.08.2017

Cleveland dome - photo J.Schaefer / AVO / 17.08.2017

The AVO has raised the alert level of Cleveland, in the Aleutians to Watch, and its aviation code to Orange this January 17, 2019.

Satellite data show the existence and growth of a new lava dome since January 12, and its presence could be linked to explosive activity, commonly noticed without warning.

 

Source: Alaska Volcano Observatory

Merapi - seismogram of 17-18.01.2019 - Doc. Magma Indonesia

Merapi - seismogram of 17-18.01.2019 - Doc. Magma Indonesia

At Merapi, on Java, the growth of the Merapi dome gives rise to avalanches of incandescent blocks more and more frequent.

This January 17, the PVMBG informs 37 earthquakes collapse, and 8 earthquakes of collapse January 18, between midnight and 06h ​​local, lasting between 12 and 88 sec. A thick plume is observed about 50 meters above the summit.

The volume of the dome, estimated on January 16, is 453,000 m³, with a growth rate of 2,300 m³ / day.

 

Sources: PVMBG, Magma Indonesia

Merapi - summary activity table as at 17.01.2019 - Doc. PVMBG

Merapi - summary activity table as at 17.01.2019 - Doc. PVMBG

The Institute of Geophysics of the National Autonomous University of Mexico (UNAM) and the National Center for Disaster Reduction (Cenapred) are preparing to complete the modernization of the surveillance systems of the Popocatépetl volcano.

By installing 11 stations, the two institutions seek to improve the monitoring of the seismic activity at the origin of the colossus and to understand how the deformation undergone by the volcanic building is changing. In addition, they are also advancing in the creation of a complete 360 ​​° vision in real time through the installation of a camera system, according to information from the UNAM Gazette.

The modernization works are in the final phase. In addition, these institutions are preparing the optimization of the network of remote gas measurement systems. This technology package is expected to be completed in February and will feed the data and analytical information collected by the Institute of Geophysics and Cenapred.

The installation of a weather radar will facilitate the recognition and study of ash from the volcano. It will be able to know the altitude and the dispersion of the ashes even when the climatic conditions make the visibility difficult, as it happens with the presence of clouds and precipitations, or during the night.

In the past 24 hours, Popocatepetl has experienced 254 exhalations with emission of steam, gas and ash.

An ash emission at 12:44 lasting 25 minutes was accompanied by a plume reaching momentarily 1,000 meters, before dispersing to the E-NE, generating a few falls of ash in the localities downwind.

Sources: Cenapred & SkyAlert

Renewal of the surveillance system of Popocatépetl - photo by Robin Campion / UNAM

Renewal of the surveillance system of Popocatépetl - photo by Robin Campion / UNAM

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Publié le par Bernard Duyck
Publié dans : #volcanic activity
 Kuchinoerabujima - 17.01.2019 / 09h32 - Oki Sakura / FB via Shérine France

Kuchinoerabujima - 17.01.2019 / 09h32 - Oki Sakura / FB via Shérine France

Kuchunoerabujima - 17.01.2019 / 09h20 - eruptive plume and pyroclastic flow - JMA webcam

Kuchunoerabujima - 17.01.2019 / 09h20 - eruptive plume and pyroclastic flow - JMA webcam

An explosive eruption occurred at about 9:19 am on January 17 at Kuchinoerabujima, in the Ryuku volcanic arc, south of Japan.

It was accompanied by a plume of ash to a height of 6.000 meters, ejection of pyroclasts up to 1,000 meters from the crater, but also pyroclastic flows encompassing the southwest flank of the volcano on 1,500 meters. These flows have fortunately not reached the inhabited areas.

Following this eruption, a powerful white plume of gas and vapor was observed.

The JMA maintains the alert level at 3 / do not approach the volcano within a radius of 2 km.

Sources: JMA, NHK and various observers, via Shérine France

The Planchon Peteroa complex presented on January 15 at 20h56 local an explosion accompanied by a greyish ash plume at about 600 meters, moving mainly northwest.

In a previous bulletin, the Sernageomin specifies that according to the observations and the recorded measurements, a new eruptive cycle of phreatomatic characteristics develops, following the possible contact of a magmatic body with a part of the hydrothermal system. which would facilitate the fragmentation of a minor volume of magma and the expansion of steam and the emission of ashes.

The alert level remains in Amarilla.

Source: Sernageomin

Planchon Peteroa - 15.01.2019, respectively at 08h and 15h - webcam ICES - CNEA
Planchon Peteroa - 15.01.2019, respectively at 08h and 15h - webcam ICES - CNEA

Planchon Peteroa - 15.01.2019, respectively at 08h and 15h - webcam ICES - CNEA

At Merapi / Java, the PVMBG reports for January 16, 2019 a total of 33 collapse earthquakes, a blast earthquake, and a distant tectonic earthquake.

The activity level remains at 2 / waspada.

Source: PVMBG

Merapi - collapse of blocks and incandescence of the dome on 15.01.2017 / 21h25 - Doc. Magma Indonesia

Merapi - collapse of blocks and incandescence of the dome on 15.01.2017 / 21h25 - Doc. Magma Indonesia

Activity report of Merapi for 16.01.2019 - Doc. PVMBG

Activity report of Merapi for 16.01.2019 - Doc. PVMBG

Insivumeh / Guatemala is conducting a geothermal study of the newly formed mud volcano on the shore of Laguna de Ixpaco, municipality of Pueblo Nuevo Viñas / Santa Rosa, with the aim of obtaining more scientific details on this structure. It is for the moment anticipated to speak about the formation of a new volcano, although precautions are necessary during an approach by the inhabitants or the tourists.

Ixpaco lagoon forms a round-shaped lagoon at the base of the dormant Tecuamburro volcano, a volcanic depression connected to an underground river, which is greenish-yellow in color and can turn white due to the high sulfur content.

Sources: Insivumeh & Conred

Pueblo Nuevo Vinas / Santa Rosa - mud volcano - picture Conred 16.01.2019

Pueblo Nuevo Vinas / Santa Rosa - mud volcano - picture Conred 16.01.2019

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Publié le par Bernard Duyck
Publié dans : #volcanic activity
 Chaparrastique / San Miguel - 13 and 14.01.2019 - MARN photos

Chaparrastique / San Miguel - 13 and 14.01.2019 - MARN photos

In El Salvador, Chaparrastique presents seismic data as of January 11, showing a return to the equilibrium of the internal system.

Chaparrastique - RSAM from 08 to 14.01.2019 - Doc. MARN


Occasional gas pulses exceed the crater by up to 150 meters. The plume, composed mainly of water vapor, dissipates towards the west of the volcano.

However, on January 13 at 18h, a smell of sulfur was perceived in the hamlet of Las Cruces 5.5 km NW of the crater.

 

Source: MARN 14.01.2019

Santiaguito - avalanches on the east flank of the Caliente dome - photo Valdemar Martínez COLRED finca Patzulin.

Santiaguito - avalanches on the east flank of the Caliente dome - photo Valdemar Martínez COLRED finca Patzulin.

On January 14, Santiaguito / Guatemala presents a white degassing, dissipating southwestward, and weak to moderate avalanches on the eastern flank of the Caliente dome reaching its base and raising ash particles in a westerly direction.

Sources: Insivumeh and COLRED

Sheveluch - Volcanic Ash Advisory 15.01.2019 - Doc. VAAC Tokyo

Sheveluch - Volcanic Ash Advisory 15.01.2019 - Doc. VAAC Tokyo

The continuous growth of the Sheveluch dome is accompanied by a strong fumarolic activity and avalanches of incandescent blocks. A plume of gas, steam and ashes is observed at a height of 4,500-5,000 meters asl, then drifting 110 km to the southeast of the volcano, on 14 January.

A similar activity continues on January 15, with a plume at 4,000-4,500 meters asl, to the southeast for 72 km.

 

Sources: KVERT & VAAC Tokyo

Sheveluch - Volcanic Ash Advisory 15.01.2019 - Doc. VAAC Tokyo

Sheveluch - Volcanic Ash Advisory 15.01.2019 - Doc. VAAC Tokyo

In Mexico, Popocatepetl has, in the last 24 hours, presented 303 exhalations of water vapor and gas, accompanied by a little ashes. The eruptive plumes are observed at a height of about 1,500 meters above the crater, dispersing towards Puebla.

 

Sources: Cenapred and WebcamsdeMexico

Popocatépetl - exhalations of 14.01.2019, respectively at 9:51 and 13:34 - images webcamsdeMexico
Popocatépetl - exhalations of 14.01.2019, respectively at 9:51 and 13:34 - images webcamsdeMexico

Popocatépetl - exhalations of 14.01.2019, respectively at 9:51 and 13:34 - images webcamsdeMexico

The volcanological observatory of the Soufriere of Guadeloupe reveals this January 15 a new prohibited perimeter, given the evolution observed since the beginning of 2018 revealing a cyclic process of injection of deep magmatic gas at the base of the hydrothermal system, at 2- 3 km under the summit.

This perimeter will ensure a distance of at least 50 meters radius around the main gas emission centers.

 

Sources: OVSG, via RCI

The Soufrière massif / Guadeloupe - OVSG photo caption

The Soufrière massif / Guadeloupe - OVSG photo caption

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Publié le par Bernard Duyck
Publié dans : #volcanic activity, #Tectonique
Merapi - fall of incandescent rocks on 14.01.2019 / 02:13 local - photo Øystein Lund Andersen

Merapi - fall of incandescent rocks on 14.01.2019 / 02:13 local - photo Øystein Lund Andersen

At Merapi / Java, incandescent rock falls were observed six times on 13 January between 19:50 and 21:21 BST towards the Gendol River, lasting from 35 to 86 sec. The falls are repeated on January 14 at 2:13 local.

On January 12th, we can point the rock falls at 9:13 pm, on 400 m. approximately and at 21:16, on 1,500 m. lasting 126 sec.

The volume of the dome on January 13 reached 439,000 m³, with a growth rate of 3,400 m³ / day

 

Source: PVMBG

Merapi - dome growth on 13 January 2019 - Doc. PVMBG

Merapi - dome growth on 13 January 2019 - Doc. PVMBG

In the Moluccas, the Gunungapi Ibu on the island of Halmahera in activity level 2 / waspada, has ash plumes between 200 and 800 meters above the crater.

The seismicity of January 13 is declined between 70 eruptive earthquakes, 69 breath earthquakes, 21 earthquakes of collapse, 10 episodes of tornilo, and 13 of harmonic tremor.

An orange VONA has been in effect since January 13 at 8:01 am WIT, following the observation of an ash plume 800 meters above the summit (2.125 m asl) moving south.

Despite the regular weather coverage, moderate thermal anomalies were recorded by Mirova: from 20 MW on 11.01 and 16 MW on 13.01.2019

 

Sources: PVMBG, Magma Indonesia, Mirova

 Gunung Ibu - Sentinel image-2 SWIR image from 06.01.2019

Gunung Ibu - Sentinel image-2 SWIR image from 06.01.2019

Gunung Ibu - 13.01.2019 ash plume - photo Bencana ID

Gunung Ibu - 13.01.2019 ash plume - photo Bencana ID

Gunung Ibu - seismicity on 13.01.2019 - Doc. Magma Indonesia

Gunung Ibu - seismicity on 13.01.2019 - Doc. Magma Indonesia

A seismic swarm occurred on January 13, from 2:50 UTC, southwest of Santorini, in the Cyclades, between the volcano and the group of Christiana Islands.

The earthquakes have a magnitude between 2 and 3.9 and a hypocenter located between 6 and 30 km.

The strongest earthquake is M 3.9, at 8:26 UTC and a depth of 17 km. (EMSC)

Although close to the Kameni Line, there is no indication to link them to volcanic activity. These tectonic earthquakes remain under monitoring, due to the tourist frequentation of this natural, volcanologically active site.

 

Sources: HHN; EMSC

Santorini - seismogram of 13.01.19 / HTT and location of the epicenters at SW of Santorini / EMSC
Santorini - seismogram of 13.01.19 / HTT and location of the epicenters at SW of Santorini / EMSC

Santorini - seismogram of 13.01.19 / HTT and location of the epicenters at SW of Santorini / EMSC

Caldera of Santorini - Nea Kameni, seen from Fira - ESA photo

Caldera of Santorini - Nea Kameni, seen from Fira - ESA photo

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Publié le par Bernard Duyck
Publié dans : #volcanic activity

An explosion partially destroyed the dome of the Nicanor crater at Nevados de Chillan this January 11 at 5 am local (8h UTC); it has been associated with an LP earthquake, in connection with fluid dynamics, at a depth of 500 meters and medium seismic energy.

Incandescence, and high temperature gas and pyroclastic material emission was observed in the active crater area.

The explosion remains within the current alert level, orange level.

Source: Sernageomin, ICES

Se produjo una explosión menor ocurrida en el domo de lava en el Complejo . Este evento está dentro de comportamiento esperado. Se mantiene alerta técnica . Via:

 
 
 

In Papua New Guinea, after an eruption reported on January 8, a new eruption is reported in Manam.

The ash plume rose to 15.2 km, confirmed by VAAC Darwin and observers on the ground, then drifted to the SSO, passing on the Big Island. Mirova reports a very high thermal anomaly on January 11, with 1,414 MW, falling back to a more moderate level then, between 163 and 79 MW. The aviation code has changed to red.

Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis
Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis

Manam - thermal anomalies of 11.01.2019 and activity of last year - Doc.Mirova Modis

The 2 active volcanoes in PNG on this image Sentinel 2 SWIR of 10.01.2019 - one click to enlarge

The 2 active volcanoes in PNG on this image Sentinel 2 SWIR of 10.01.2019 - one click to enlarge

Kadovar also has small intermittent eruptions in recent days. Small thermal anomalies are raised by Mirova on January 10, 8 MW, and January 12, 9-10 MW. The Darwin Vaac issued a volcanic ash advisory to the ESS on January 12 and an orange aviation code.

Source: VAAC Darwin; The Watchers

Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge
Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge

Kadovar - images Sentinel 2 SWIR, respectively on the 5th (image cut off) and 11.01.2019 - there are two hotspots at the top of the island - one click to enlarge

Falls of incandescent blocks follow one another at Merapi: the BPPTKG informs for January 11 at 21:17 an episode lasting 88 seconds, over a length of 800 meters direction of the Gendol river.

On January 12, two falls of blocks are observed: the first at 1:45 local, lasting 122 sec. and a trajectory over 1,700 meters; the second at 2:31, with a duration of 52.6 seconds and a length of 900 meters.

The alert level of Merapi remains at 2 / waspada.

Source: BPPTKG

Merapi - avalanche of blocks over 800 m to the Gendol river 11.01.2019 / 21:17 WIB - BPPTKG

Merapi - avalanche of blocks over 800 m to the Gendol river 11.01.2019 / 21:17 WIB - BPPTKG

Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge
Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlargeMerapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge

Merapi - avalanches of blocks on 12.01.2019 - photo above Kang Narno Winarno - images from below on 12.01.2019 at 1:45 and 2:31 - one click to enlarge

Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv
Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv

Anak Krakatau - 11.01.2019 - manifestations of hydrothermal activity ... the sea is "very hot" - photos James Reynolds / EarthUncut Tv

Anak Krakatau - DigitalGlobe photo WorldView-2 / 11.01.2019, via Simon Carn.

Anak Krakatau - DigitalGlobe photo WorldView-2 / 11.01.2019, via Simon Carn.

In Krakatau, the Sutseyan eruptions seem to calm down; the hydrothermal activity is manifested by intense outgassing around the volcano, and a brown water color towards Sertung Island, due to iron hydroxide particles, and greenish to the east, following differences in density .

Sources : James Reynolds, Simon Carn, images satellite Copernicue EU et DigitalGlobe WorldView-2 

Anak Krakatau - morphological evolution between December / before the tsunami and the collapse and 11.01.2019 - Doc. Copernicus EU

Anak Krakatau - morphological evolution between December / before the tsunami and the collapse and 11.01.2019 - Doc. Copernicus EU

On January 11, and last night, Etna experienced different explosions on Voragine and / or the northeast crater, accompanied by beautiful ash plumes.

Sources: Salvatore Lo Giudice and Maria Liotta.

Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice
Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice

Etna NE - 11.01.2019 in the morning and around 13h - photos Salvatore Lo Giudice

Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative
Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative

Etna, a double plume seen from Bronte in the morning and evening - photos Maria Liotta via EtNative

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Publié dans : #volcanic activity

An eruption occurred on January 10, 2019 at 19:55 at Agung, on the island of Bali. The height of the plume could not be estimated due to fog. It is announced up to 6,000 meters to NNW by VAAC Darwin.

(Note that the media reporting the eruptive episode use old photos.)

On the seismogram, the recording has a maximum amplitude of 22 mm and a duration of about 4 minutes 26 seconds. According to information obtained by Bali Express, a number of residents of Bali's highest mountain ring heard a roar, which would coincide with the eruption.

Ash rains occurred in the Desa Ban area of ​​Kubu district, as far as Terunyan village, Kintamani district, Bangli.

 Agung - image Sentinel-2 image on bands 12.8A, 4 SWIR / 08.01.2019, revealing some hot spots in the crater.

 Agung - image Sentinel-2 image on bands 12.8A, 4 SWIR / 08.01.2019, revealing some hot spots in the crater.

Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge
Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge

Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge

On the last image of the Sentinel 2 satellite, dated January 8, we can see various hot spots on the slab in the crater; a very slight thermal anomaly of 1MW is recorded by Mirova on January 10 at 18:10.

The PVMBG maintains the level of activity at 3 / siaga, with a 4 km radius danger zone around the crater and recommendations not to park in the drainages, where a lahar possibility exists.

VA ADVISORY
DTG: 20190110 / 1245Z
VAAC: DARWIN
VOLCANO: AGUNG 264020
PSN: S0821 E11530
AREA: INDONESIA
SUMMIT ELEV: 3142M
ADVISORY NR: 2019/2
SOURCE INFO: HIMAWARI-8, VONA
AVIATION COLOR CODE: ORANGE
ERUPTION DETAILS: VA TO EXT FL180 NW 15KTS
OBS VA DTG: 10 / 1245Z
OBS VA CLD: SFC / FL180 S0820 E11532 - S0823 E11531 - S0820
E11520 - S0815 E11519 - S0814 E11525 MOV NW 15KT
FCST VA CLD +6 HR: 10 / 1845Z SFC / FL180 S0823 E11532 - S0803
E11431 - S0737 E11422 - S0735 E11453 - S0820 E11534
FCST VA CLD +12 HR: 11 / 0045Z SFC / FL180 S0820 E11534 - S0824
E11531 - S0804 E11431 - S0738 E11423 - S0736 E11454
FCST VA CLD +18 HR: 11 / 0645Z SFC / FL180 S0823 E11531 - S0807
E11431 - S0738 E11423 - S0739 E11454 - S0820 E11534
RMK: VA TO EX FL180 NW 15KTS OBS ON 10 / 1220Z SAT IMAGERY.
VONA 10 / 1223Z CONFIRMS ERUPTION. HEIGHT BASED ON IR TEMP OF
-5C AND MODEL GUIDANCE. MOVEMENT BASED ON HIMAWARI-8 AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20190110 / 1345Z

Sources: PVMBG, Magma Indonesia, VAAC Darwin
 

In Krakatau, an excellent report by James Reynolds / EarthUncut Tv reveals the current morphology of the volcano.

The surtseyan activity produced a tufa ring, which separates a "crater lake" from the ocean; a trace on the inner circumference reveals height differences between the current external and internal levels. Gaseous emissions and steam are observed on its edges near the ocean.

An intense hydrothermal activity is outstanding, as evidenced by the coloring of the water, tinted by particles of iron hydroxide.

The coast of Rakata, facing Krakatau, a place known for camping and watching the volcano, was disfigured by the tsunami and landslides about 25 meters high.

Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv
Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv

Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv

Anak Krakatau - 10.01.2019 - color of the sea due to hydrothermal activity - photo James Reynolds / EarthUncut Tv

Anak Krakatau - 10.01.2019 - color of the sea due to hydrothermal activity - photo James Reynolds / EarthUncut Tv

Rakata, the coast facing the anak Krakatau disfigured by the tsunami and landslides - photo James Reynolds / EarthUncut Tv

Rakata, the coast facing the anak Krakatau disfigured by the tsunami and landslides - photo James Reynolds / EarthUncut Tv

On a radar image acquired by the satellite ICEYE-X2 (the second of a battery of 5-8 satellites to be put into orbit this year), commented by Dr. Andy Hopper of the University of Leeds, we can observe " the building in the phase of construction, with a crater that is no longer in communication with the sea ".

An image of Sentinel 2 on January 8th shows the steam plume, the coloring around the volcano and the differences in vegetation of the nearby islands.

Sources: James Reynolds / EarthUncut Tv and Sentinel Satellite Image 2 and ICEYE-X2

Anak Krakatau - radar image acquired by the satellite ICEYE-X2 / 09.01.2019

Anak Krakatau - radar image acquired by the satellite ICEYE-X2 / 09.01.2019

Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge
Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge

Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge

Lire la suite

Publié le par Bernard Duyck
Publié dans : #volcanic activity

An eruption occurred on January 10, 2019 at 19:55 at Agung, on the island of Bali. The height of the plume could not be estimated due to fog. It is announced up to 6,000 meters to NNW by VAAC Darwin.

(Note that the media reporting the eruptive episode use old photos.)

On the seismogram, the recording has a maximum amplitude of 22 mm and a duration of about 4 minutes 26 seconds. According to information obtained by Bali Express, a number of residents of Bali's highest mountain ring heard a roar, which would coincide with the eruption.

Ash rains occurred in the Desa Ban area of ​​Kubu district, as far as Terunyan village, Kintamani district, Bangli.

 Agung - image Sentinel-2 image on bands 12.8A, 4 SWIR / 08.01.2019, revealing some hot spots in the crater.

 Agung - image Sentinel-2 image on bands 12.8A, 4 SWIR / 08.01.2019, revealing some hot spots in the crater.

Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge
Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge

Agung - 10.01.2019 - Ash Advisory Volcanic / VAAC Darwin - Ash Cloud Position / Flightradar - one click to enlarge

On the last image of the Sentinel 2 satellite, dated January 8, we can see various hot spots on the slab in the crater; a very slight thermal anomaly of 1MW is recorded by Mirova on January 10 at 18:10.

The PVMBG maintains the level of activity at 3 / siaga, with a 4 km radius danger zone around the crater and recommendations not to park in the drainages, where a lahar possibility exists.

VA ADVISORY
DTG: 20190110 / 1245Z
VAAC: DARWIN
VOLCANO: AGUNG 264020
PSN: S0821 E11530
AREA: INDONESIA
SUMMIT ELEV: 3142M
ADVISORY NR: 2019/2
SOURCE INFO: HIMAWARI-8, VONA
AVIATION COLOR CODE: ORANGE
ERUPTION DETAILS: VA TO EXT FL180 NW 15KTS
OBS VA DTG: 10 / 1245Z
OBS VA CLD: SFC / FL180 S0820 E11532 - S0823 E11531 - S0820
E11520 - S0815 E11519 - S0814 E11525 MOV NW 15KT
FCST VA CLD +6 HR: 10 / 1845Z SFC / FL180 S0823 E11532 - S0803
E11431 - S0737 E11422 - S0735 E11453 - S0820 E11534
FCST VA CLD +12 HR: 11 / 0045Z SFC / FL180 S0820 E11534 - S0824
E11531 - S0804 E11431 - S0738 E11423 - S0736 E11454
FCST VA CLD +18 HR: 11 / 0645Z SFC / FL180 S0823 E11531 - S0807
E11431 - S0738 E11423 - S0739 E11454 - S0820 E11534
RMK: VA TO EX FL180 NW 15KTS OBS ON 10 / 1220Z SAT IMAGERY.
VONA 10 / 1223Z CONFIRMS ERUPTION. HEIGHT BASED ON IR TEMP OF
-5C AND MODEL GUIDANCE. MOVEMENT BASED ON HIMAWARI-8 AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20190110 / 1345Z

Sources: PVMBG, Magma Indonesia, VAAC Darwin
 

In Krakatau, an excellent report by James Reynolds / EarthUncut Tv reveals the current morphology of the volcano.

The surtseyan activity produced a tufa ring, which separates a "crater lake" from the ocean; a trace on the inner circumference reveals height differences between the current external and internal levels. Gaseous emissions and steam are observed on its edges near the ocean.

An intense hydrothermal activity is outstanding, as evidenced by the coloring of the water, tinted by particles of iron hydroxide.

The coast of Rakata, facing Krakatau, a place known for camping and watching the volcano, was disfigured by the tsunami and landslides about 25 meters high.

Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv
Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv

Anak Krakatau on 10.01.2019 - the "crater lake"; note the differences in level since the eruption of 22.12 on the edges and degassing on the periphery - photo James Reynolds / EarthUncut Tv

Anak Krakatau - 10.01.2019 - color of the sea due to hydrothermal activity - photo James Reynolds / EarthUncut Tv

Anak Krakatau - 10.01.2019 - color of the sea due to hydrothermal activity - photo James Reynolds / EarthUncut Tv

Rakata, the coast facing the anak Krakatau disfigured by the tsunami and landslides - photo James Reynolds / EarthUncut Tv

Rakata, the coast facing the anak Krakatau disfigured by the tsunami and landslides - photo James Reynolds / EarthUncut Tv

On a radar image acquired by the satellite ICEYE-X2 (the second of a battery of 5-8 satellites to be put into orbit this year), commented by Dr. Andy Hopper of the University of Leeds, we can observe " the building in the phase of construction, with a crater that is no longer in communication with the sea ".

An image of Sentinel 2 on January 8th shows the steam plume, the coloring around the volcano and the differences in vegetation of the nearby islands.

Sources: James Reynolds / EarthUncut Tv and Sentinel Satellite Image 2 and ICEYE-X2

Anak Krakatau - radar image acquired by the satellite ICEYE-X2 / 09.01.2019

Anak Krakatau - radar image acquired by the satellite ICEYE-X2 / 09.01.2019

Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge
Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge

Anak Krakatau - Sentinel 2 images from 08.01.2019 in natural colors and vegetation bands 8,4,3 - one click to enlarge

Lire la suite

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