September 11, 2015. English . Mauna Loa, Ubinas .

Home / blog georges Vitton / September 11, 2015. English . Mauna Loa, Ubinas .

September 11, 2015. English . Mauna Loa, Ubinas .

September 11, 2015.


Dear friends , readers of the Chaudron de Vulcain , it’s time for your humble servant to give the antenna and to concentrate on his well deserved HOLIDAYS.

From tomorrow I will be in Indonesia, a focus of volcanism, to recharge my batteries in sulfur fumes, noxious gases, and other flying stones.

See you October 5th.

Let eruptions come



Mauna Loa, Hawai :

9°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Monitoring data through the month of July 2015::

mauna loa

View from above Mauna Loa’s upper Northeast Rift Zone looking across an unnamed cone toward Mauna Kea.

Seismicity at Mauna Loa remains elevated in several parts of the volcano. Earthquake rates on the Upper Southwest Rift Zone (Sulfur Cone) and Mokuʻāweoweo Crater remain elevated, with over 150 located earthquakes occurring in July. There was a swarm on the west flank of Mauna Loa, approximately 100 located earthquakes. All earthquakes in the past month have been small relative to earthquake sequences observed before eruptions in 1975 and 1984.

The Mauna Loa GPS network recorded modest net inflation over the month of July, with very little inflation in the second half of the month. Modeling of the pattern of motions since this current episode of inflation started in the summer of 2014 suggests at least two inflating reservoirs–a spherical reservoir near the southeast wall of the summit caldera, and a tabular body that lies beneath the caldera and upper Southwest Rift Zone.


mauna loa

A close-up view of the 1984 fissure that cut through the southwest side of Mauna Loa’s 1940 vent cone. The crack on the right side of the cone is the 1984 fissure.

No significant changes in SO2 and CO2 were recorded by the continuous fumarole monitor during July, 2015. The fumarole temperature sensor leveled off a decline that began on 08 May. Since that time, the temperature has decreased from 82 to about 78.5 degrees.


Source : HVO ( )

Photo : HVO



Ubinas, Perou : 

South Volcano Observatory (OVS) from the Geophysical Institute of Peru (IGP), been recorded since 4:40 yesterday morning moderate gas emissions and ash emissions on the Ubinas volcano  . This behavior corresponds to a lightweight volcanic degassing of the system, which   discharges and that do not exceed 1000 meters above the bottom of the crater.

The South Volcano Observatory (OVS), the Volcano Observatory INGEMMET (OVI), and institutions of the Scientific Committee of the permanent monitoring of the volcano Ubinas issued in the early hours of yesterday the ash warning dissemination in which they warned against possible falls of this material in the towns of Santa Rosa de Phara, Lucco, Yalagua and Lloque, located in the northeast of the volcano.


With the passing of the hours, the wind drove the ash to the east and south, towards the villages of Escacha, Ubinas.

« The activity of the volcano Ubinas shows a slight downward trend; However, under its current eruptive process, small surprises related to continuous ash emissions can be seen. The OVS is attentive to the possibility of recording a high intensity event « , said Dr. Orlando Macedo, director of the OVS.
The institutions expect that these emissions continue during the day, so it is recommended around the volcano to take precautions to avoid damage to his health.


Source : IGP ( )


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