August 29 , 2016. EN. Kilauea , Cascades Range , Tungurahua , Ibu .

Home / blog georges Vitton / August 29 , 2016. EN. Kilauea , Cascades Range , Tungurahua , Ibu .

August 29 , 2016. EN. Kilauea , Cascades Range , Tungurahua , Ibu .

August 29 , 2016.


Kilauea , Hawai :

19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE


Activity Summary:
Kilauea Volcano continues to erupt at its summit and from its East Rift Zone. The 61g lava flow continues to enter the ocean at Kamokuna and produce scattered breakouts on the coastal plain and pali. The flow poses no threat to nearby communities. Activity of the Halema’uma’u lava lake continues, with its surface about 30 m (100 ft) below the crater rim.

Summit Observations:
The circulating lava lake within the Halema’uma’u Overlook crater remains active. The inflationary phase of the current DI event continued during the past day. The lava lake level continues to closely mirror the tilt and has risen to about 30 m (100 ft) below the floor of Halema’uma’u. Views of the spattering lava lake surface are visible from the webcams located at HVO’s observation tower this morning. There was no significant change in seismicity during the past day. Tremor fluctuations associated with lava lake spattering continue. The average daily summit sulfur dioxide emission rate ranged from 3,200 to 4,300 metric tons/day over the past week.



Pu’u ‘O’o Observations:
Webcam images show no significant changes at Pu’u ‘O’o; intermittent views show that persistent glow continues at the long-term sources within the crater. There was no significant change in seismicity during the past day. The tiltmeter on Pu’u ‘O’o cone recorded slight inflationary tilt over the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 270 metric tons/day when last measured on August 25.


Lava Flow Observations:
Activity of the 61g lava flow, extending southeast of Pu’u ‘O’o on Kilauea’s south flank, continues. The flow is entering the sea at several places near Kamokuna, spanning about 1 km (0.6 mi) of coastline, and building an increasingly large lava delta at the base of the sea cliff. Scattered breakouts continue, predominantly on the pali and the makai (seaward) portion of the coastal plain.

Source : HVO

Photos : Sean King , David Ford .


Cascades Range  ,  United – States :

Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of seismicity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon.


st helens
St Helens

Recent observations: A few small earthquakes were located this week near Mount Rainier, Mount St. Helens, and Mount Hood. No unusual ground deformation or volcanic gas emission was detected at any of the Cascade volcanoes. During the past week field crews performed maintenance and conducted a gravity survey at Mount St. Helens. Other field crews were working at Glacier Peak volcano to perform geologic investigations and in the Mount St. Helens-Mount Adams-Indian Heaven area to remove temporary seismic stations that have been deployed since 2014 as part of the NSF-sponsored iMUSH (imaging Magma Under St. Helens) experiment.

The U.S. Geological Survey and Pacific Northwest Seismic Network (PNSN) continue to monitor these volcanoes closely and will issue additional updates and changes in alert level as warranted.


Source : CVO


Tungurahua , Ecuador :

Activity bulletin of the TUNGURAHUA volcano:
Sunday, August 28, 2016

The volcano was maintained with low activity.
During the night and early morning, the volcano remained clear without any  surface activity observed.



From 11:00 (TL) yesterday until 11:00 (TL) today, no seismic event recording.
Observations of emissions and ashes:
During the night and early morning, the volcano was clear, no surface activity was observed , since , the volcano is covered.
Rain and lahars:
There was no rain.

If more heavy rains occur in the volcano area, they can re-mobilize deposits from pyroclastic flows and  generate lahars . For this reason, we recommend extreme caution when driving on roads and highways that cross the gorge through which these flows are down and the regions which in the past have been affected by this kind of phenomenon.

Source : IGEPN

Photo : José Luis Espinosa Naranjo.


Ibu , Indonesia :


Evaluation :

Visual data show that in the period from 1 June 2016 until 22 August 2016, loud explosions with columns of eruption are fluctuating but stable at a maximum height of 800 m. The color of gray smoke in the columns of volcanic eruption shows the material brought to the surface. The material  of eruption  so far is dispersed around the crater and on the top of G.Ibu.
Seismicity is still dominated by the eruption earthquake , the tremors and the avalanche earthquake , whose number fluctuates, but still in very large numbers. The harmonic tremors were recorded, fluctuating and tended to increase at the end of the period. However, the magnitude of harmonic tremor at the end of the period tended to decrease, indicating a decline in energy and / or reduction of volcanic material brought to the surface. The tremors are still being recorded, showing that the activity is dominated by surface activity or near the surface / shallow and the continued migration of magma.


The emergence of volcanic earthquakes (VA) and shallow volcanic (VB) in June 2016 are not significant, allegedly associated with an increased incidence of local tectonic earthquakes (TL) in May-June. This indicates that the magmatic activity in the edifice can be affected by tectonic activity around Mount Ibu.
The number and duration of earthquakes avalanches associated with materials in the northern part of the opening of the crater, in this period are still fluctuating and showed an increase at the end of the period. The number of earthquake eruption is still relatively large compared to the earthquake avalanche, which indicates the growth of the lava dome eruption or product accumulation on the peak / crater that have the potential to train a pyroclastic flows or lava.


Based on the visual and instrumental observations and the potential danger of eruption of Mount Ibu until August 22, 2016, the activity level of the G Ibu remains to waspada (Level II).
If changes in decrease / increase in volcanic activity of G Ibu occur significantly, then activity level can be lowered / raised in accordance with the level of activity and threats.
The intensive continuous monitoring is conducted to assess the activity of G Ibu, as well as for the understanding of its activity.


Source : VSI

Photo : guidepaystoraja

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