January 10 , 2016. EN. Masaya , Momotombo, Kilauea .

Home / blog georges Vitton / January 10 , 2016. EN. Masaya , Momotombo, Kilauea .

January 10 , 2016. EN. Masaya , Momotombo, Kilauea .

January 10 , 2016.


Masaya , Nicaragua :

A microseisme at 6:27 today, which because of its low magnitude could not be located, was recorded.
The lava lake on the floor of the crater Santiago can still be observed from the Mirador 2. Currently the emitted sound wave is moderate, are also present very small gas explosions, ejecting minimum volumes of volcanic ash that accumulated on the areas surrounding the crater.
The emanation of volcanic gases reach a height of 350 meters above the crater, and are moved by the wind toward the West and Southwest.
The seismic amplitude in real time (RSAM) remains at low and moderate values for this volcano and is currently at 180 units.




The Masaya Volcano is of great tourist importance and record a lot of visitors. The lake can be seen from the point of view « 2 » of the volcano. Today, one of those emissions surprised the population, but the Masaya National Park rangers note that « emanations are a part of his normal activity.« 

Sources : Ineter , Canal 4 .

Photo : CCC/Cesar Pérez


Momotombo, Nicaragua :

Since 12:00 yesterday until 12:00 today, there was no gas explosion and ash emissions on the Momotombo volcano  .
During this period, 50 volcanic microseismic events were recorded, of which it was possible to locate the epicenter of the two strongest, southeast of the volcano , on the mainland. The first occurred at 10:40 last night, with a magnitude  of M 1.6  , at a depth of 2.4 km and the second at 10:59 p.m., with a magnitude of M 2.5 and a depth of 2.8 kilometers. These earthquakes are associated with movements of magma below the Momotombo, indicating that the volcano remains active, so it is possible to record new gas explosions, ash and lava expulsions.



The seismic amplitude in real time (RSAM) remains at low to moderate values and currently, is at 155 units.
The emission of this volcano is moderate .This afternoon, INETER specialists will conduct a field visit to the volcano to measure the amount of volcanic sulfur dioxide emitted.

Source : Ineter.

Photo : Jaime M Chamorro



 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:
Eruptive activity continues at Kilauea Volcano’s summit and East Rift Zone. Seismicity and deformation rates throughout the volcano remain at low levels, with a deflationary trend in tilt recorded at the summit during the past 24 hours. Scattered lava flow activity continues on the June 27th lava flow field within about 6 km (4 mi) northeast of Pu’u’O’o. These flows currently pose no threat to nearby communities.


In recent days, the lava lake in Halema’uma’u Crater has been at a relatively high level. This view, looking roughly north-northeast, shows typical behavior, with lava rising into the lake at the distant end opposite the photographer, and sinking all along the base of the crater wall in the foreground and at right. Within this zone of subduction is a site of persistent spattering at the southeast edge of the lava lake, visible at the right edge of the photograph. On the morning of January 7 when this photo was taken, the lake was about 35 m or 114 ft below the rim.

Summit Observations:
The lava lake remains active within the Halema’uma’u Overlook crater. Summit tiltmeters recorded a deflationary trend in tilt during the past day, and is continuing this morning. The level of the lava lake has not changed significantly during the past several days, fluctuating between about 29 m (95 feet) and 34 m (112 feet) below the crater floor; the level has lowered a few meters (yards) during the past 24 hours. Seismic tremor has been weakly variable, reflecting small changes in the vigor of spattering on the lava lake. For the period December 30, 2015 – January 5, 2016, the summit sulfur dioxide emission rate averaged 6,200 metric tons/day.

When large rockfalls impact the lava lake, they trigger explosive events that propel volcanic rock fragments (tephra) upward. This morning’s event was vigorous enough to hurl incandescent fragments onto the rim of Halema’uma’u Crater, about 110 m (360 ft) above the lava lake surface. This picture of a Quicktime movie shows some of these fragments flying toward the USGS Hawaiian Volcano Observatory webcam that is perched on the rim of the crater. Rockfalls and subsequent explosive events occur with no warning, and the resulting fragments of hot lava and rocky debris thrown onto the crater rim pose a significant hazard in this area.

Pu’u’O’o Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources within the crater and high on the northeast flank of the cone. Seismic activity remains low at Pu’u’O’o, and tiltmeters recorded a very slight inflationary trend in tilt during the past 24 hours. The sulfur dioxide emission rate from all East Rift Zone vents was about 270 metric tons/day when it was last measured on January 4.

Pu’u’O’o overflight: A large breakout near the middle trees flowed in a southwesterly direction, back toward Pu’u’O’o . Overplating, and possibly an inflated tube in the area, created a high point from which the breakout occurred, making it appear to be flowing uphill. This view is looking toward the northeast.

June 27th Lava Flow Observations:
Webcam images show continued surface flow activity on the June 27th flow field, with smoke plumes where lava is igniting forest. The most distal active lava is within 6 km (4 mi) northeast of Pu’u’O’o and is not currently threatening any nearby communities.

Source : HVO

Photos : HVO , Bruce Omori.

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