June 29 , 2016. EN. Ubinas , Sabancaya , Colima , Nevado Del Ruiz .
June 29 , 2016.
Ubinas , Sabancaya , Peru :
Yellow alert remains in place for the Ubinas volcano .
Due to the low activity of the Ubinas volcano, located in the Moquegua region, the Geological Survey, Mining and Metallurgy (Ingemmet), recommends keeping the alert in yellow.
According to the monitoring conducted in the last week, continuing low levels of seismic-volcanic activity (less than 7 earthquakes per day) and fumarolic emissions are very faint, like pulses that are scattered below 200 meters height above the crater of the mountain. Also it indicates that volcanic gas emissions (SO2) of less than 1800 Ubinas are tons per day.
Sabancaya volcano ( Photo ).
As for the Sabancaya, located in Arequipa, the Ingemmet also realizes that the seismicity of this volcano is very low, with minimal presence of tremors minimum energy. In addition, fumarolic emissions are recorded below 1,000 meters above the crater, while the flow of volcanic gas (SO2) reaches a maximum of 2000 ton daily.
The Ingemmet indicates no deformation of the Ubinas and Sabancaya volcanoes associated to an eruptive process. That institution recommends that the authorities and people kept continuously informed about it’s activity through Volcano Observatory reports.
Source : ANDINA
Colima , Mexico :
Colima volcano registers an exhalation of 2500 meters high.
The Colima Volcano (also Volcán de Fuego) recorded an exhalation at 07:34 hours which caused a plume of steam with high ash content of about 2,500 meters high on Tuesday.
Because the direction of the winds, authorities have warned the public about possible ashfall in municipalities of Colima and Jalisco, located in the volcanic area.
Researchers at the Volcano Observatory of the University of Colima expect a spike in activity of the volcano now that the rains are more frequent in the volcanic area, the number of active events is in the range of 10 to 15 a day.
The Barranca Montegrande.
The volcanic alert continues in preventive phase. In Colima , authorities maintain an exclusion range of 5 kilometers around the crater and 12 kilometers in Barranca Montegrande.
Source : Noticieros
Photos : Credit : Hernando Rivera Foto
Nevado Del Ruiz , Colombia :
Weekly activity report of the volcano Nevado del Ruiz, from June 21 to June 27, 2016
The level of activity continues at:
Yellow activity level or (III): changes in the behavior of volcanic activity.
Regarding the monitoring of the activity of the Nevado del Ruiz, the SERVICIO Geologico COLOMBIANO reports:
During the last week, the volcanic system continued to show unstable behavior. A significant increase in fracture activity mainly in the volcanic structure in relation to the previous week is highlighted. Earthquakes are located mainly in the seismogenic sources of the South West, North distal, proximal North and to a lesser extent, the Northeast, the East and the Arenas crater at depths ranging from 0, 5 and 8.0 km.
The appearance of two significant increases on 22 and 26 June, located southwest of Arenas crater at depths between 2.0 and 4.0 km are highlighted. The earthquake highest in energy was presented on 22 to 12:13 (local time) with a maximum magnitude of 3.0 ML (local magnitude), which was reported as felt by residents near the volcano.
Seismic activity related to fluid dynamics in volcanic conduits also recorded a slight increase, characterized by the occurrence of earthquakes long period (LP) and very long period (VLP), pulses of tremors and multiple earthquakes due to fluid shifts, with variable energy levels. Also during this week continuous volcanic tremor was recorded with different energy levels. As for the location of this type of seismicity, it is mainly located in the Arenas crater sector and in the south and south – east of the volcano area.
Many of these seismic signals have been associated with the process of emission of ash into the atmosphere , as reported yesterday and this morning, which were visualized from the city of Manizales and some municipalities in the department of Tolima, and as representatives of the Los Nevados National Park (NNNP) and officials of the SERVICIO Geologico COLOMBIANO who were in the field work in the volcano area.
Significantly, given the favorable climatic conditions of the day of yesterday and today, it is possible to observe from different points ash emissions, which corroborates the instability of the volcanic system so that emissions have been reported previously, it has not ruled to register new seismic signals of this type with higher levels of energy and emissions of ash in the atmosphere, which can be dispersed depending on wind conditions that prevail in the region.
The volcanic deformation measured from electronic inclinometers, global navigation satellite systems (GNSS) and satellite images to track changes in the tilt, the position and shape of the volcano (respectively), continues to record changes.
The volcano continues to emit into the atmosphere large amounts of water vapor and gases, including sulfur dioxide (SO2), as it was felt by the permanent stations SCANDOAS installed in the Volcano area and on satellite imagery. In the monitoring of satellite images provided by the site Mirova, no thermal anomaly has been identified.
The column of gas, steam and ash, from time to time, reached a maximum height of 1,800 meters above the summit of the volcano, on June 27 The direction of the dispersion of the column was in line with the prevailing wind in the area, which during the week showed a predominant direction towards the northwest of the volcano.
From the technical-scientific and instrumental analysis, it is considered that the volcano Nevado del Ruiz continues to evolve and it is possible that future events may indicate an acceleration of the process, involving greater instability thereof requires changes consequently its level of activity.
Source : SGC
Photos : La Patria , SGC.