October 13 , 2016. EN. Kilauea , Nevado Del Ruiz , Turrialba , Fuego.
October 13 , 2016.
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
Kilauea Volcano continues to erupt at the summit and the Pu’u ‘O’o vent on its East Rift Zone. Summit tilt has been relatively steady over the last 24 hours. The lava lake surface is 12 m (39 ft) below the floor of Halema’uma’u Crater as of yesterday evening. The 61g lava flow continues to enter the sea at Kamokuna posing no threat to nearby communities.
Summit tiltmeters have shown little change over the past 24 hours. The lava lake surface as of yesterday evening is 12 m (39 ft) below the rim of the Overlook Vent. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php.
Seismicity is within normal, background rates with tremor fluctuations associated with lava lake spattering. Average daily summit sulfur dioxide emission rates ranged from 5,400 to 6,000 metric tons/day over the past week.
Pu’u ‘O’o Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources within the crater. There were no significant changes in seismicity or tilt over the past 24 hours. The sulfur dioxide emission rate from all East Rift Zone vents was about 310 metric tons/day when last measured on September 26.
Lava Flow Observations:
The 61g lava flow, extending southeast from Pu’u ‘O’o on Kilauea’s south flank continues to supply lava to the ocean at Kamokuna.
As a strong caution to visitors viewing the 61g flow ocean entry (where lava meets the sea), there are additional significant hazards besides walking on uneven surfaces and around unstable, extremely steep sea cliffs. Venturing too close to an ocean entry exposes you to flying debris created by the explosive interaction between lava and water. Also, the new land created is unstable because it is built on unconsolidated lava fragments and sand. This loose material can easily be eroded away by surf, causing the new land to become unsupported and slide into the sea. In several instances, such collapses, once started, have also incorporated parts of the older sea cliff.
Finally, the interaction of lava with the ocean creates a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs.
Source : HVO
Photos : Thank you to David Ford and Bruce Omori, our « reporters« on site.
Nevado Del Ruiz , Colombia :
Weekly activity report of the volcano Nevado del Ruiz, October 4 to October 10, 2016
The level of activity continues at:
Activity level Yellow or (III): changes in the behavior of volcanic activity.
Regarding the monitoring of the activity of the Nevado del Ruiz volcano, the Colombian Geological Service reports that:
During the past week, various monitoring parameters, show that the Nevado del Ruiz volcano remains unstable.
Seismic activity related to the fracturing of the volcanic rock beneath the volcano, represented by the volcano-tectonic earthquakes (VT) showed compared to the previous week, an increase in their number and their seismic energy released. The appearance of a seismic swarm was recorded between 11:00 (local time) on October 7 and 11 October 2016 12:00 This swarm (recording numerous earthquakes) was located at an average distance of 4.3 km in the north of the Arenas crater at depths between 4.5 and 6.8 km.
The earthquakes of greater magnitude were recorded in the swarm, on October 7 at 15:34 (local time) with a magnitude of 4.4 ML (local Magnitude) and 9 October at 13:05 (Eastern Time local) with a magnitude of 3.1 ML (local magnitude) at depths of 5.4 and 5.2 km. The earthquake of greater magnitude was felt in the immediate vicinity of the volcano and in the municipalities of Manizales, Villamaría, Chinchiná, Neira, Lebanon, Herveo, Dosquebradas and Pereira, while the magnitude 3.1 ML, was reported as felt in surrounding areas of the volcano and some people in the municipalities of Manizales and Villamaría.
In addition, seismic activity of rock fracturing was recorded in the northern seismic source zones, and in sectors Southwest, Northeast and Southeast of the volcano and to a lesser extent in the crater. The depths of these earthquakes ranged from 1.6 to 7.2 km.
Seismic activity related to fluid dynamics in volcanic conduits was characterized by continuity in the occurrence of earthquakes long period (LP) and very long period (VLP), pulses of tremors and multiple earthquakes of fluid , with varying levels of energy.
Also during this week, episodes of continuous volcanic tremors of short duration and low energy levels were recorded. This type of seismicity was mainly located in the Arenas crater around this one and to a lesser extent in the southeast sector of the volcano. Some of these seismic signals have been associated with the emissions of gas and ash into the atmosphere, as was confirmed by the cameras installed in the volcano area, and by statements made by officials of the National Natural Park of Los Nevados (NNNP) and the Geological Service of Colombia (SGC). The registration of new seismic signals of this type with higher energy levels that can be associated with gas and ash emissions is not excluded.It is important to remember that the ash emission process can occur over several days and sometimes several times a day without involving an individual report for each episode. There are already 22 months that the emission of ash process are present on the Nevado del Ruiz, which, in the current activity cycle, is not an indication of an imminent eruptive activity.
The volcanic deformation measured from electronic inclinometers, global navigation satellite systems (GNSS) and satellite images to determine changes in the tilt, the position and shape of the volcano, respectively, continued to record changes.
The volcano continues to emit into the atmosphere large amounts of water vapor and gases, including sulfur dioxide (SO2), as shown by the values obtained by the SCANDOAS stations in the volcano area and the satellite image. In follow-up information provided by the site Mirova, no thermal anomaly was identified during the week.
The column of gas, steam and time to time ash has reached a height of 2000 m above the top of the volcano, on October 8.
The direction of the dispersion of the column was in compliance with the prevailing wind in the area, which during the first days of the week showed a dominant direction towards the northeast of the volcano and to the southwest in the end of the week, promoting the dispersion of ash on the areas that are in the directions above.
From the technical-scientific and instrumental analysis, it is considered that the volcano Nevado del Ruiz, despite the increase in activity in the previous week, continues to evolve at Amarillo activity level.
Source : SGC
Turrialba , Costa Rica :
Report of the eruptive activity of the volcano Turrialba:
October 12, 2016, updated 17:00
Eruptions and seismic activity:
Since the last eruptive activity of the volcano, between 21:00 on October 11 and 01:00 on October 12, the volcano remained with seismicity characterized by volcanic earthquakes of moderate magnitude until 14:00 on October 12 , from there, the activity increased. This activity is characterized by high amplitude of volcanic earthquakes of short duration, small tremors of short duration and very low amplitude tremor, accompanied by emission of ash. At 4:20 p.m. hours a volcanic tremor of high amplitude, accompanied by strong emission of ash, gases and aerosols, which lasted 10 minutes (Fig. 1) appeared. It is expected that, during the evening, such events is repeated in the short term.
Scattering of ashes and gases in the atmosphere:
The scattering of ashes and gases emitted by the Turrialba volcano during the day of 12 October was mainly to the northwest in the morning and the southwest in the afternoon, depending on weather data from the National Institute meteorology IMN.
Reports of ash fall and sulfur odor perception:
Until the publication of this report, at 17:00 hours, no reports of ash fall or perception of sulfur smell were received.
Because of the continuity of the eruptive activity observed in 2016 on the Turrialba volcano, it is important to take protective measures, especially for the people most sensitive to environmental change , with respiratory problems, asthma , allergies, cardiovascular problems. They must protect their airway and mouth with masks or wet handkerchief, their eyes with plastic glasses, and skin and head with long sleeved shirts and a hat. In addition, it must be implemented best practices in homes, education centers and protection of human and animal health, for food, drinking water and cooking, pets and animals generally, delicate instruments or tools.
Source : Ovsicori
Fuego , Guatemala :
Morphology: composite stratovolcano
Geographical location: 14 ° 28’54˝ N Latitude; 90 52’54˝ W Longitude.
weather conditions: Mostly Cloudy
Wind: East 2 k / h
Precipitation: 0.0 mm.
Low outgassing white fumaroles at a height of 4,200 meters (13.780 feet) that spread to the west and southwest, and 13 explosions were recorded, five low and 8 moderate . They sent columns of gray ash at heights of 4300-4700 meters (14,110 to 15.420 feet), which are spread over 10-12 km in the western and the Southwestern direction. 8 low rumbling and 5 waves of shock moderate to low were generated, perceived less than 10 km from the volcano. Incandescent pulse amounted to approximate heights of 100-150 m with light to moderate avalanches around the edge of the crater. The explosions generated ash fall in areas of Morelia, Panimache I and II, Sangre de Cristo and San Pedro Santa Sofía Yepocapa.
Source : Insivumeh
Photo : Archive