March 19 , 2017. EN. Kilauea , Momotombo , Herdubreid , Etna .

Home / blog georges Vitton / March 19 , 2017. EN. Kilauea , Momotombo , Herdubreid , Etna .

March 19 , 2017. EN. Kilauea , Momotombo , Herdubreid , Etna .

March 19 , 2017.

 

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:
Kīlauea Volcano continues to erupt at its summit and at the Puʻu ʻŌʻō vent on its East Rift Zone. The episode 61g lava flow from Puʻu ʻŌʻō is entering the ocean at Kamokuna and is feeding surface flows above the pali. These lava flows pose no threat to nearby communities at this time. Deflationary tilt at the summit began yesterday and continues. The lava lake level was about 23.5 m (77 ft) below the Overlook crater rim when measured yesterday evening. Seismicity at Kīlauea has not changed significantly in the past several days, and remains at a low level.

 

Summit Observations:
Tiltmeters at Kīlauea’s summit continue to record deflationary tilt. The lava lake level fell about 9.5 m (31 ft) over the past 24 hours, and is currently about 23.5 m (77 ft) below the Overlook crater rim. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php. Summit tremor continues to fluctuate in response to variations in lava lake spattering. Average daily summit sulfur dioxide emission rates were between about 6,600 and 1,900 metric tons/day during the last week in February, the most recent time when conditions permitted measurements. Seismicity in the upper East Rift Zone has returned to typical levels, with just a few small earthquakes.

Puʻu ʻŌʻō Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources at Puʻu ʻŌʻō, including the pit on the west side of the crater that holds a small lava pond. There was no significant change in East Rift Zone seismicity over the past 24 hours. The tiltmeter at Puʻu ʻŌʻō recorded a small inflationary tilt during the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 250 metric tons/day when last measured on February 22, 2017.

Lava Flow Observations:
The episode 61g flow is still active and entering the ocean at Kamokuna. The breakout on the upper flow field that began March 5 continues to advance downslope and now spans several hundred meters in width, extending beyond the main 61g flow field margins. Webcam views overnight only showed small breakouts occurring above the pali. None of these flows pose a threat to nearby communities at this time.

Source : HVO

Photos : Bruce Omori .

 

Momotombo , Nicaragua :

Momotombo volcano registers dense gas emanation.

17 MARCH 2017. The Momotombo volcano, located in the Department of León, on Friday morning recorded a dense emanation of gases from its crater, without causing no affect to anything.

According to photographs taken by locals, the gases reached a height of about 20 meters above the crater of the volcano and were dragged westward by the force of the winds.

SINAPRED authorities maintain permanent monitoring of the degasification process recorded by the Momotombo volcano.

 

The Momotombo volcano now produces a gas emission that does not affect the population of Nicaragua, an official source reported.
The Momotombo issued moderate amounts of smoke on Saturday, which some took for a small eruption but showed no movement in its crater, said the monitoring of the Nicaraguan Institute of Territorial Studies (INETER).

The authorities of the municipalities in the north-west of Nicaragua, where the volcano usually deposits its ashes, reported no damage caused by the emission of gas.
The Momotombo volcano, 1297 meters high, is located at the northern end of Lake Managua or Xolotlán, and in early December 2015 had its largest eruption in 110 years.
The perfect cone of Momotombo led to the evacuation of the city of Leon in 1610, when it was under the administration of the Spanish crown, and its activity in 1886 obscured the west of Nicaragua for 23 days, according to the INETER files.

 

Source : NUEVE RADIO YA , El Nuevo Diaro .

Photo : elhorizonte.mx

 

Herdubreid , Iceland  :

Earthquake of M 3.3 under Mount Herdubreid this morning .

18 MARCH 2017. From midnight last night a swarm of about 90 tremors took place in the area around Mount Herdubreid, the biggest one measuring 3.3 on the Richter scale originated approximately 5 km southwest of the mountain.

Mount Herdubreid is a tuya in northeast highlands of Iceland. It is situated to east side of the Odadahraun lava desert formed in eruptions from Trolladyngja. Askja volcano and Bardabunga volcano are both close by.

 

The area has active volcanoes around and the last major eruption there was Bardabunga fissures, lasting about 6 months and leaving a new lava field known as Holuhraun in its wake. According to the Icelandic Met Office there are no volcanic tremors have been detected so far. The area is being monitored.

Source : ICE NEWS

Photo : Arctic Heli Skiing

 

Etna , Sicily:

The international airport of Catania in Sicily was closed Saturday because of the volcanic ash cloud expelled by Etna. The flights did not resume before the afternoon, Italian airport authorities said.

Several flights were canceled or diverted. The volcano’s activity continues.

 

During the afternoon, the interaction between lava and snow caused the formation of pyroclastic avalanches on the steep slopes of the Valle del Bove. The phenomenon was photographed by Angelo Strano who declares:

This afternoon on Mount Etna came something really spectacular: the lava coming out of the South-East crater, when pouring into the Valle del Bove, the front of the flow coming in contact with the snow caused a  phreatic explosion that raised a very large and spectacular cloud of steam mixed with ash mushrooms visible from most of Sicily and Calabria, of course, without it causing any casualties or injuries.

Another photo of Orazio Furia.

 

L’image contient peut-être : nuage, ciel, nature et plein air

The explosive activity when it ceased, while the effusion of lava was continuing feeding the flow in the direction of the Valle del Bove.

Source : RTBF

Photos : Angelo Strano , Orazio Furia .

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