August 08, 2015. English . Kilauea , Ubinas, Nevado Del Ruiz .

Home / blog georges Vitton / August 08, 2015. English . Kilauea , Ubinas, Nevado Del Ruiz .

August 08, 2015. English . Kilauea , Ubinas, Nevado Del Ruiz .

August 08, 2015.


Back to business after a small meeting of hiking


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 summit tilt showed a deflationary trend during the past day, but has slowed in the past 12 hours. The level of the summit lava lake has lowered by several meters (yard) since yesterday’s update. The East Rift Zone lava flow is active northeast of Pu’u ‘O’o, and all breakouts remain within 8 km (5 mi) of the vent. The flow does not currently pose a threat to communities. Low levels of seismic activity continue across the volcano.



A large breakout spreads out on the flow field, adding another layer of rock, in the process called overplaying. Smoke rises in the background from the northern branch, as it continues to push into the ‘ohia forest.


Summit Observations:

Tiltmeters at Kilauea’s summit began recording an abrupt deflationary trend early yesterday morning, and the rate of tilt is slowing this morning. The summit lava lake remains active, but the level lowered by several meters (yards) with the deflationary tilt. Seismicity remains at low levels. Summit sulfur dioxide emission rates ranged from 2,600 to 5,500 metric tons/day for the week ending July 28.


The pit west of the Puʻu ʻŌʻō crater, shown here, is overhung on most sides and may continue to widen with time. The lava pond inside is relatively placid, appearing as a black surface, usually with a few tiny spattering areas along the edge

Pu’u ‘O’o Observations:
Webcam views of Pu’u ‘O’o during the past day showed no changes in the persistent incandescent crater vents. Seismic activity remains low. The sulfur dioxide emission rate from all East Rift Zone vents was about 500 tonnes/day when measurements were last possible on July 23, 2015.



With the winds blowing from the south, we had the rare opportunity to fly directly over the collapse pit within Pu’u ‘O’o crater, and watch the lava pond consume hardened plates of its cooled surface in the subduction zone along its edge.


June 27th Lava Flow Observations:

Webcam views overnight show continued activity on the flow field. The June 27th lava flow is active, with surface flows scattered in 3 areas northeast and east of Pu’u ‘O’o. As mapped during an overflight of the flow field on August 4, all active flows are within 8 km (5 mi) of Pu’u ‘O’o. Location of the most distant flows are marked by smoke plumes that are produced where they are creeping into the forest and burning vegetation.

Source : HVO

Photos : Bruce Omori.


Ubinas , Perou :

The Ubinas volcano recorded another explosion yesterday afternoon, according to El Comercio.

The volcano located in the Moquegua region erupted, sending ash 1,500 meters high and which are fall on the community of San Carlos de Titi. The Volcano Observatory of the Institute of Geology, Mining and Metallurgy (INGEMMET) reported the explosion at 3:56 p.m.



The wind sent ashes in a northerly direction, affecting the city of San Carlos de Titi. Institute experts have also reported the expulsion of rocks and a sulfur smell in the villages of the valley Ubinas according to El Comercio.
The last week of July saw the most powerful explosion of the volcano throughout the year. The INGEMMET and the Observatory’s report indicates that magma is rising under the volcano and therefore is causing explosions.


Source :


Nevado Del Ruiz, Colombie :


Weekly bulletin of activity of the volcano Nevado del Ruiz, from 27 July to 3 August 2015
Activity level Yellow or (III): changes in the behavior of volcanic activity.

Regarding the monitoring of the activity of the Nevado del Ruiz volcano, the SERVICIO Geologico COLOMBIANO through the OBSERVATORIO VULCANOLÓGICO Y SISMOLÓGICO OF MANIZALES, informs that:

During the last week, different monitoring parameters show that the volcanic system remains unstable. Seismicity was mainly associated with fluid dynamics in volcanic conduits. This activity is mainly located in the crater, east and south of it and was characterized by the recording of multiple episodes of volcanic tremor, associated with the movement of fluids, gases and emissions of ash in the atmosphere.



In addition, continued recording of seismic activity associated with the fracturing of the rock in the volcanic structure. Earthquakes are located mainly in the north, the south, southeast and into the crater at depths ranging between 0.8 and 6.2 kilometers. The maximum magnitude recorded during the week was 1.4 ML (local magnitude), corresponding to an earthquake located in the Arenas crater, which took place on August 2 at 10:32 p.m. (local time) at a depth of 1 , 2 km. Continuous volcanic deformation show some changes.

The volcano continues to emit into the atmosphere of significant amounts of water vapor and gases, including sulfur dioxide (SO2). The gas and steam column reached a maximum height of 400 meters above the summit of the volcano. It was observed white and sometimes gray, because of the presence of ash. The direction of dispersion of the gas column was in harmony with the wind regime, which remained mainly on the western side of the volcanic edifice.


On 6 August, an increase of tremor stands at 8:39 local time; it accompanies a rising ash plume of 700 meters, filmed by webcams, with an repercussions on the ONO sector, near Manizales, Villamaria, Cinchina, Santa Rosa and Pereira.


Source : SGC. Blog Bernard Duick.

Photo : SGC

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