March 14 , 2017. EN. Bogoslof , Sabancaya , Kilauea .

Home / Alaska / March 14 , 2017. EN. Bogoslof , Sabancaya , Kilauea .

March 14 , 2017. EN. Bogoslof , Sabancaya , Kilauea .

March 14 , 2017.

 

Bogoslof , Aleutians Islands , Alaska :

Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Issued: Monday, March 13, 2017, 4:14 AM AKDT
Source: Alaska Volcano Observatory
Notice Number:
Location: N 53 deg 55 min W 168 deg 2 min
Elevation: 492 ft (150 m)
Area: Aleutians

Volcanic Activity Summary:
A short-duration eruption began at Bogoslof volcano at 11:31 UTC on March 13 (3:31 AKDT on March 13) and ended 12 minutes later. An ash cloud has been detected in satellite data, and volcanic ash emissions are also likely occurring based on infrasound data. Winds are towards the south-southwest.

 

AVO Image

Worldview satellite images of Bogoslof volcano collected on March 3 and March 11, 2017 showing changes to the island due to eruptive activity on March 8, 2017. The central lake that is the site of the underwater vent is greatly expanded, deposition of volcanic ash and blocks has expanded the island’s west shoreline, and a new small vent was formed on the north shore of the island. Image data provided under the Digital Globe NextView License.

We are evaluating the magnitude of this eruptive episode. Although the episode appears to be over and of short duration, additional activity is possible. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.

Source : AVO

Photos : Schneider, Dave

 

Sabancaya , Peru :

Seismic activity decreased slightly from an average of 44 to 36 explosions per day and a maximum DR of 60 cm2. However, seismic activity associated with the movement of magma ascension and earthquakes (hybrid, long-period and Tremor) continues to be recorded.
• Eruptive ash and gas columns reached ~ 3000 meters above the crater, then spread over 40 km to the south and south-westerly direction.

• The deformation did not show significant significant changes. The minimum variations recorded are within the margin of error of the equipment.
The flow of volcanic gas (SO2) reached a maximum of 2717 tons / day, recorded on March 10th.
Two thermal anomalies were detected with PMV (radiated volcanic power) values of 1 MW.

In general, eruptive activity has decreased slightly since last week.

Source : IGP

Photo : Martin Rietze

 

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



Activity Summary:
Kīlauea Volcano continues to erupt at its summit and at the Puʻu ʻŌʻō vent on its East Rift Zone. The episode 61g lava flow from Puʻu ʻŌʻō is entering the ocean at Kamokuna and is feeding surface flows on and above the pali. These lava flows pose no threat to nearby communities at this time. The summit inflationary trend continued over the past day, and the lava lake level is about 16 m (52 ft) below the Overlook crater rim this morning. Seismicity at Kīlauea has not change significantly in the past several days, and remains at a low level.

 

Summit Observations:
Tiltmeters at Kīlauea’s summit recorded a slight inflationary tilt during the past day. The lava lake this morning is about 16 m (52 ft) below the Overlook crater, a rise of about 2 m (7 ft) since yesterday morning. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php. Summit tremor continues to fluctuate in response to variations in lava lake spattering. Average daily summit sulfur dioxide emission rates were between about 6,600 and 1,900 metric tons/day during the last week in February, the most recent time when conditions permitted measurements. Seismicity in the upper East Rift Zone has returned to typical levels over the past few days, with just a few small earthquakes.

 

 

 


Puʻu ʻŌʻō Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources at Puʻu ʻŌʻō, including the pit on the west side of the crater that holds a small lava pond. There was no significant change in East Rift Zone seismicity over the past 24 hours. The tiltmeter at Puʻu ʻŌʻō recorded a small inflationary tilt during the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 250 metric tons/day when last measured on February 22, 2017.

 


This satellite image was captured on Wednesday, March 8, by the NASA/USGS Landsat 8 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures and show active lava. White areas are clouds.

The image shows that breakouts continue in several areas on the flow field. The largest breakout is about 2 km (1.2 miles) southeast of the vent. Smaller breakouts are present above and on the pali. Near the base of the pali, on the coastal plain, a small breakout is active. A thermal anomaly is also present at the Kamokuna ocean entry.


Lava Flow Observations:
The episode 61g flow is still active and entering the ocean at Kamokuna. Webcam views overnight showed small breakouts on and above the pali, and a small breakout on the coastal plain. None of these flows pose a threat to nearby communities at this time.

Source : HVO

Photos : Ian Plant , HVO.

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