April 11 , 2016. EN. Bromo , Rincon de la Vieja , Klyuchevskoy , White Island , Ruapehu , Ngauruhoe .

Home / blog georges Vitton / April 11 , 2016. EN. Bromo , Rincon de la Vieja , Klyuchevskoy , White Island , Ruapehu , Ngauruhoe .

April 11 , 2016. EN. Bromo , Rincon de la Vieja , Klyuchevskoy , White Island , Ruapehu , Ngauruhoe .

April 11 , 2016.


Bromo , Indonesia :

Malang Airport Closed Due to Mount Bromo Eruption.

10 APRIL 2016. Increased volcanic activity at the volatile Mount Bromo has necessitated the temporary closure of the nearby Abdul Rachman Saleh Airport in Malang, East Java, on Sunday (10/04).

The airport has had to close on several occasions since November when authorities first recorded signs of increased activity at the 2,329-meter volcano, which is popular with visitors for its hiking and driving trails as well as its scenic beauty.


A Batik Air flight and one by Sriwijaya Air, both from Jakarta, had to be redirected to Juanda Airport in East Java’s capital Surabaya, 90 kilometers away.
All other flights to and from the Malang airport, some 30 kilometers from the volcano, had to be canceled.
Juanda Airport spokeswoman Liza Anindya said officials are bracing for a possible influx of passengers if the closure of the airport at Malang continues.

« We have coordinated with the airlines to transport passengers [from Surabaya to Malang] by road, » Liza said. « So far, we haven’t seen a significant increase [in flights being redirected to Juanda Airport] because there are not that many flights to Malang. »



Photo : Manjik photography


Rincon de la Vieja , Costa Rica :

Lake level of Rincon de la Vieja fell three meters .

10 APRIL 2016. The lake level of Rincon de la Vieja volcano fell three meters in the last four months. This has been determined by volcanologists of the National Seismological Network (RSN) on a visit. Raul Mora Amador, one of the specialists, has attributed the fact to the decrease in the amount of rain and the constant phreatic eruptions (composed of gases, mud and water). These exceeded the crater walls and dispersed in the northern sector of the volcano.

The most recent phreatic eruption, which was recorded by a permanent camera RSN in Buenos Aires de Upala, occurred at 10:34 a. m. last Wednesday 30 March. For specialists, November 2015 (date of the last visit) to April this year, the lake has suffered a loss of 190,000 cubic meters of water.

rincon de la vieja

The experts also called their attention in the fumaroles located in the crater. These have had great activity, temperatures were 130 ° C and there were streams of sulfur, which were not observed in November. They also noted that the distance, the walls are whitish colors. This indicates that some of the emanations are outperforming the crater and have spilled material in the valleys of several rivers, especially the Pénjamo river.

Although they felt that at this time there is no danger of a violent explosion, they have warned the inhabitants of the surrounding towns the said river, will be on alert when the rainy season starts, as it can produce lahars or mud flow. The Pénjamo passes near the towns of Buenos Aires, Armenia and Aguas Claras de Upala near 4,000 people. It is a tributary of the river Niño, which empties into Lake Nicaragua.


Afficher l'image d'origine

In parallel, the volcanologist said they found a thermal imbalance in the lake. So while on the surface it is at a temperature of 46 ° C, the bottom of the lake can reach 150 ° C. Access is closed to the Rincon de la Vieja volcano, located in the national park of the same name is located between the cantons of Liberia and Bagaces (Guanacaste) and Upala (Alajuela) began a new period of phreatic eruptions during the last half of 2011.

Due to this constant activity, the National Emergency Commission (CNE) has hosted recommendations of the RSN and the Volcano Observatory of Costa Rica (OVSICORI), and decided to close tourist access to the active crater. This, is at risk of a phreatic eruption -whose gases and sludge out at temperatures.

Raul Mora said that the National Park Rincon de la Vieja itself is open and that the only closed path is leading to the active crater. « People can visit the park and enjoy it, but not up to the active crater. That’s the recommendation, « he said.

Source : La NACION

Photos : agaudi.wordpress.com , Magiclub .


Klyuchevskoy , Kamchatka :

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

Explosive eruption of the volcano continues. Ash explosions up to 19,700-26,240 ft (6-8 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

Explosive volcano eruption of Strombolian type began on 03 April and continues till present. A strong gas-steam activity of the volcano continues too. Satellite data by KVERT showed a thermal anomaly over the volcano on 01 and 05-07 April; the volcano was obscured by clouds in the other days of week.



During the eruption in 2015 of the Kliuchevskoi, a small lava flow had poured out on the southeast flank. This year, emissions of incandescent material are observed in the Southeast part of the central crater. Most likely, we will see in the near future, a lava flow at the same place, because it is there a decrease of the edge of the crater.
If the eruption is higher (as in 2013), the lava can flow in other directions.

Source : Kvert, Volkstat Ru. ( Yu.Demyanchuk ).


White Island , Ruapehu , Ngauruhoe , New Zealand  :

Volcanoes continue to leak gas: volcano gas flights

About once a month we plan to make airborne measurements of sulphur dioxide (SO2), carbon dioxide (CO2) and hydrogen sulphide (H2S) outputs from the active volcanoes. The warm humid conditions this summer have challenged us, however last week we made successful flights to White Island (Whaakari), Ruapehu and Ngauruhoe. The gas output hasn’t changed much from any of the volcanoes.


white island

White Island

The conditions were really good at Ruapehu and very good data was obtained. There is slight increase in the gas output; however this is well within the usual range seen here. The Crater Lake appeared a light grey colour, calm with no convection or up welling. The lake temperature is currently 23 ºC. The good conditions also allowed for data to be collected at Ngauruhoe. The gas output from Ngauruhoe is very low so if it’s windy or turbulent we often cannot obtain a result. The carbon dioxide (CO2) value shows an increase but we attribute this mostly to the good conditions. They were not so good during the previous flight.

From the White Island flight we were able to ascertain there has been a decrease in the gas output that ranged 36-55% less than the February result. The wind at the volcano was light and variable; this doesn’t help as the gas is widely dispersed above the volcano and is hard to measure. The airborne data matched the mini DOAS data for the same day. No changes were noted in the Crater Lake.



About our monitoring flights

We use several techniques to monitor and evaluate the volcanic gas output from our active volcanoes. About once a month we plan to make airborne measurements of sulphur dioxide (SO2), carbon dioxide (CO2) and hydrogen sulphide (H2S) outputs from the volcano.

Two DOAS SO2 gas spectrometers are also installed on White Island and under favourable conditions measure the sulphur dioxide (SO2) gas output. We can get data from them 3-5 days a week.


Source : Geonet  ( Brad Scott )

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