October 08 , 2016. EN . Kilauea , Fuego , Santiaguito , Nevado Del Ruiz , Mauna Loa , Aso .
October 08 , 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 its summit and at the Pu’u ‘O’o vent on its East Rift Zone. Deflationary tilt at the summit continues. The lava lake surface was 52.5 m (172 ft) below the floor of Halema’uma’u Crater as of Friday morning. The 61g lava flow continues to flow into the sea at Kamokuna. The flow poses no threat to nearby communities.
Summit tiltmeters recorded the start of inflationary tilt beginning early Friday morning. The lava lake surface, as of Friday morning stood 52.5 m (172 ft) below the rim of the Overlook Vent. Webcam views of the lava lake can be found at the following webpage: http://hvo.wr.usgs.gov/cams/region_kism.php.
Summit seismicity is at typical levels this morning while volcanic tremor amplitudes continued to fluctuate in association with lava lake spattering. Average daily summit sulfur dioxide emission rates ranged from 1,000 to 5,300 metric tons/day over the past week. GPS and InSAR data have recorded a long-term inflationary trend of the summit magma reservoir complex since 2010.
Pu’u ‘O’o Observations:
No significant changes are visible on webcam images, with persistent glow continuing at long-term sources within the crater. HVO fieldworkers at Pu’u ‘O’o last Friday reported no significant changes since the previous visit a couple of weeks before that. A tiltmeter on the north flank of Pu’u ‘O’o has recorded no significant tilt in the past week. The sulfur dioxide emission rate from all East Rift Zone vents was about 310 metric tons/day when last measured on September 26.
This photograph shows spattering at the southeast margin of Kilauea’s summit lava lake, as viewed from the west. This is the most common area on the lake to have spattering, but, because it is almost directly below the camera location, it is not visible in our webcam images.
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. The easternmost of the coastal entries was active Friday, while the western one was inactive. Active breakouts occurred on the coastal plain about 2 km (1.2 mi) inland from ocean entry during the past week but appeared to be dying out as of last Friday.
Last Friday, HVO’s field crew also noted that cracks running parallel to the coast have developed in the large, 5.2 hectare (12.9 acre) eastern delta. NPS Eruption Crew staff reported a collapse of the eastern portion of the delta sometime between Sunday evening and Tuesday afternoon. This indicates that the delta is becoming increasingly unstable and could collapse further into the sea. Hazardous delta collapses occur without warning and can trigger explosions of hot flying debris as seawater contacts newly exposed molten lava. See next paragraph for further cautionary information.
Source : HVO
Photos : David Ford , Bruce Omori , HVO.
Fuego , Guatemala:
Activity type vulcanian
Morphology: composite stratovolcano
Geographical location: 14 ° 28’54˝N Latitude ; 90 ° 52’54˝ W. Longitude
weather conditions: Clear
Wind: 5 kmh
Precipitation: 6.2 mm
An activity of moderate fumaroles of white degassing at a height of 4300 meters (14.108 feet) which were scattered to the south was noted. 10 explosions that expelled gray ash column at a height of 4500 meters (13.780 feet) were recorded, which were scattered about 10 km to the south. Incandescent projections have reached heights of about 200 m, with low to moderate avalanches around the edge of the crater. Some low rumblings were perceived as weak shock waves. As a result of explosions, fall of ash particles were generated mainly in the Rochela area.
Source : Insivumeh
Santiaguito , Guatemala :
Activity type Peléenne
Morphology: dacitic dome complex.
Geographical location: 14 ° 44 ’33 ˝ N Latitude ; 91 ° 34’13˝ W Longitude
Wind: Southeast 2 kmh,
Precipitation: 1.5 mm.
An activity of moderate fumaroles of white degassing at a height of about 2700 meters (8858 feet) that are dispersed to the southwest, late at night, and 10 moderate explosions were recorded, generating ash column gray to a height of about 3,600 meters (11,811 feet), they were scattered around the South West, East and South. It was noted ash falls on Monte Claro, San Marcos Palajunoj, El Palmar and Pueblo Nuevo. It is not excluded the possibility of ash fall in the coming hours in areas of the city of Quetzaltenango due to changes in the wind direction. The juvenile matter accumulation is observed in the vicinity of the dome, which has occasionally generated weak avalanches.
Because of the rain conditions that have arisen in the countries, from 8:18 p.m. the OVSAN, Santiaguito volcano observatory and Stg3 seismic station recorded the descent of a lahar moderated by the river Cabello de angel, tributary of the Nima I river . It has dimensions of about 16 meters wide and 1 meter high, moving volcanic material , blocks up to 1 meter in diameter, branches and trunks trees. Due to the constant activity of the Santiaguito Volcano , this lahar has moderate temperatures and exudes a sweet smell of sulfur during his trip downstream.
Source : Insivumeh
Nevado Del Ruiz , Colombia :
Weekly activity report of the volcano Nevado del Ruiz, from 27 September to 3 October 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, 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 rocks in the volcanic edifice showed a slight decrease in the number of earthquakes and seismic energy released from the previous week. This seismicity was located mainly in the seismogenic sources of the Northeast and Southeast, and to a lesser extent in the areas of North and Northwest distal of the volcano and the Arenas crater. The depths of earthquakes ranged from 0.2 to 7.3 km. The maximum magnitude recorded during the week was 1.5 ML (local magnitude), which corresponds to the earthquake registered on September 27 at 14h53 (local time), located in the southeast sector of the volcanic structure , 3.2 km deep.
Seismic activity related to fluid dynamics in volcanic conduits was characterized by the appearance of long period earthquakes (LP) and very long period (VLP), pulses of tremor, several earthquakes of fluid , with important energy levels in some case. Also during this week of continuous volcanic tremor episodes of short duration and low energy levels were recorded. As for the location of this type of seismicity, it was mainly present in the Arenas crater, next to this one, and to a lesser extent in volcanic areas of the Southeast.The registration of new seismic signals of this type with higher energy levels, some of these seismic signals have been associated with the emissions of gas and ash into the atmosphere, that the dispersion depends on wind conditions that have prevailed in the region , is not excluded, as confirmed by the images captured by the cameras installed in the volcano area as by the reports of responsible of natural National park of los Nevados (NNNP) and the Colombian Geological Service (SGC).
Ash emission process can occur over several days and sometimes several times a day without involving individual report for each episode .
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, continued to record changes.
The volcano continues to emit into the atmosphere large amounts of water vapor and gases, including sulfur dioxide (SO2), as seen in the values obtained by permanent SCANDOAS stations, installed in the volcano area and on analyzes of satellite images. In follow-up information provided by the site Mirova, two thermal anomalies of low energy have been identified and associated with the Arenas crater, which were recorded on 29 and 30 September with 1.0 and 2.0 MW values, respectively .
The column of gas, steam and ash time to time reached a maximum height of 1800 m above the top of the volcano, on September 29.
The direction of the dispersion of the column was in agreement with the prevailing wind in the area, which during the first days of the week showed a dominant direction towards the northwest of the volcano, and by the end of the week , prevailed to the South-West of the volcanic structure, promoting the dispersion of the ashes on people who are in those directions relative to the volcano.
From the technical-scientific and instrumental analysis, it is considered that the Nevado del Ruiz volcano continues to evolve. It is possible that future events may indicate an acceleration of the process occur, which would involve greater instability of the volcano and changes accordingly in the level of activity.
Source : Ingeominas.
Mauna Loa , Hawai :
19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Rates of deformation and seismicity at Mauna Loa remain above long-term background levels. The ground-based Volcano Alert Level for Mauna Loa remains at Advisory.
Mauna Loa is not erupting. Global Positioning System (GPS) measurements continue to show ground surface deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with a continuing inflationary trend occurring mainly in the southwestern part of Mauna Loa’s magma storage complex.
Small, shallow earthquakes at depths less than 5 km (3 mi) were recorded beneath the south caldera and upper Southwest Rift Zone, the same areas where most of the recent earthquakes in the Mauna Loa summit region have occurred. This past week, no earthquakes of magnitude 3 or above were recorded beneath the volcano.
Measurements from a continuously-monitored fumarole site within the summit caldera showed relatively steady fumarole temperatures and no significant changes in either sulfur dioxide or carbon dioxide concentrations in volcanic gas emissions.
Source : HVO
Aso , Japan :
Japan’s volcanic Mount Aso has erupted
7 OCTOBER 2016. Mount Aso, a volcano on Japan’s main southern island of Kyushu, erupted at around 1: 46 a.m. local time, Japan’s Meteorological Agency said Saturday.
The agency issued a level-3 alert on a scale of 5 for Aso, restricting entry around the Mount within two kilometres range.
No injury or property damage has been reported yet. Mount Aso, which stands in Kumamoto Prefecture, is the largest active volcano in Japan and is also among the largest in the world.
Source : IOL