November 14, 2020. EN. Kamchatka : Klyuchevskoy , Hawaii : Mauna Loa , Indonesia : Merapi , Ecuador : Reventador , Mexico : Popocatepetl .

Home / blog georges Vitton / November 14, 2020. EN. Kamchatka : Klyuchevskoy , Hawaii : Mauna Loa , Indonesia : Merapi , Ecuador : Reventador , Mexico : Popocatepetl .

November 14, 2020. EN. Kamchatka : Klyuchevskoy , Hawaii : Mauna Loa , Indonesia : Merapi , Ecuador : Reventador , Mexico : Popocatepetl .

November 14 , 2020.

 

Kamchatka , Klyuchevskoy :

56.06 N, 160.64 E;
Elevation 15580 ft (4750 m)
Aviation Colour Code is ORANGE

A moderate explosive-effusive eruption of the volcano continues. Ash explosions up to 19,700-23,000 ft (6-7 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.

This eruption of the volcano continues, the Strombolian and gas-steam activity with some amount of ash is observing. The lava flow continues to move along Apakhonchich chute on the southeastern volcanic flank. Satellite data showed a large bright thermal anomaly in the area of the volcano all week; gas-steam plumes containing some amount of ash extended for 85 km to the east of the volcano on 07-09 November.

Source : Kvert.

Photo : Камчатский Репортёр via Sherine France .

 

Hawaii , Mauna Loa :

19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary:
Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly over the past week and remain above long-term background levels.

 

Observations:
During the past week, HVO seismometers recorded 89 small-magnitude earthquakes across the whole volcano, 26 of which were under the volcano’s summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below ground level.

Global Positioning System (GPS) measurements show overall continued slow summit inflation, consistent with magma supply to the volcano’s shallow storage system. A minor shortening of the line length across the summit has been occurring since a small earthquake flurry at the end of October and early November.

Gas concentrations and fumarole temperatures at both the summit and Sulphur Cone on the Southwest Rift Zone remain stable.

Webcam views have revealed no changes to the landscape over the past week.

Source et photo : HVO.

 

Indonesia , Merapi :

Mount Merapi Activity Report, November 6-12, 2020

OBSERVATION RESULTS
Visual
The weather around Mount Merapi is generally sunny in the morning, while the afternoon until evening is foggy. There is a white smoke, thin to thick in thickness with low pressure. A maximum smoke height of 250 m was observed from the Selo observation post on November 8, 2020 at 2:50 p.m. Avalanches were observed from the observation post of Mount Merapi in Babadand with a maximum sliding distance of 3 km in the western sector upstream of Kali Sat on November 8 at 12:57 p.m.
Morphological analysis of the crater area based on photos of the southeast sector from November 11, 2020 showed no change in the morphology of the dome. The calculation of the volume of the lava dome from measurements using aerial photos with drones on November 3, 2020, is 200,000 m3.

Seismicity
This week, the seismicity of Mount Merapi recorded:
244 shallow volcanic earthquakes (VTB),
2,189 multiphase earthquakes (MP),
9 low frequency earthquakes (LF),
385 avalanche earthquakes (RF),
403 emission earthquakes (DG)
6 tectonic earthquakes (TT).

The seismic intensity this week is higher than last week.

Deformation
The deformation of Mount Merapi which was monitored by EDM this week showed a shortening rate of 10cm / day.

Rain and lahars:
This week, there was rain at the Mount Merapi observation post with the highest rainfall intensity of 34 mm / hour for 35 minutes at Ngepos post on November 11, 2020. There was no rain. laharse or additional flow in the rivers that descend from Mount Merapi.

Conclusion:
Based on the results of visual and instrumental observations, it is concluded that:
There is an increase in volcanic activity on Mount Merapi, so the activity status is defined as the activity level « SIAGA »

Current potential dangers come in the form of lava avalanches, eruption of volcanic material in the event of an explosive eruption, and hot cloud avalanches up to a maximum of 5 km.

Source : PVMBG.

Photos : Frekom , Klangon.

 

Ecuador , Reventador :

DAILY REPORT OF THE STATE OF THE REVENTADOR VOLCANO, Friday 13 November 2020.
Information Geophysical Institute – EPN.

Surface activity level: High, Surface trend: Increasing.
Internal activity level: High, Internal trend: No change.

Seismicity: From November 12, 2020, 11:00 a.m. to November 13, 2020, 11:00 a.m.
Explosions (EXP): 82 events.
Long periods (LP): 87 events.
Emission tremor (TE): 11 events.

Rains / lahars: No rains were recorded in the area.

Emission / ash column: Several gas and ash emissions were observed which rose between 800 and 1000 meters above the level of the crater, the direction of these emissions was mainly towards the North-West. The VAAC reported 3 alerts of emissions observed by satellites, which reached altitudes between 700 and 1000 meters above crater level and the directions of these emissions varied between East, North and Northwest .

Other monitoring parameters: No notable change. No thermal alert recording for the Reventador.

Observations: In the afternoon and at night of yesterday for several moments the volcano was cleared allowing to observe the described emissions and at night the incandescence in the crater accompanied by the rolling of blocks on the sides of the volcano. The lava flow is still active (~ 450 m) in the northeast and without notable changes.

Alert level: Orange.

Source : IGEPN.

Photo : Benjamin Bernard.

 

Mexico , Popocatepetl :

November 13, 11:00 a.m. (November 13, 5:00 p.m. GMT)

During the last 24 hours, according to the monitoring systems of the Popocatépetl volcano, 307 exhalations have been identified, accompanied by emissions of water vapor, volcanic gases and small amounts of ash). In addition, 22 minutes of low amplitude tremor were recorded.

During the morning and at the time of this report, the volcano was observed with a slight emission of water vapor, gas and ash which disperses towards the northwest.

CENAPRED urges not to go as close as possible to the volcano and in particular to the crater, because of the danger posed by the fall of ballistic fragments and, in the event of heavy rains, to stay away from the bottom of the ravines due to the danger of mudslides and debris.

The Popocatépetl volcanic alert semaphore is in YELLOW PHASE 2.

Source : Cenapred.

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