March 28 , 2022.
New Zealand , Ruapehu :
Strong tremor and Crater Lake heating continues at Mt Ruapehu. Volcanic Alert Level remains at Level 2. Published: Mon Mar 28 2022 3:30 PM
Volcanic Alert Level remains at 2
Aviation Colour Code is raised to Yellow
Mt Ruapehu’s Crater Lake (Te Wai ā-moe) temperature continues to rise, albeit slowly to ~32 °C. Strong tremor has continued throughout this heating period. The Volcanic Alert Level remains at Level 2.
Two weeks ago, Mt Ruapehu’s Crater Lake (Te Wai ā-moe) entered a new heating cycle, accompanied by strong levels of volcanic tremor (volcanic earthquakes). Over the past week, the lake has heated further to ~32 °C (from 31°C last week). The slow heating has been hindered by heavy rainfall at the volcano and influx of cold water into the lake. The strong tremor reported last week continues.
Sustained elevated tremor, combined with the slow lake heating, continues to indicate that gas is fluxing through the system. However, the slower-than-expected increase in lake temperature suggests a partial blockage may exist in the vent beneath the lake, preventing the hot gas from entering the lake. This could allow pressure to build up within the volcano.
The interpretation of this activity is consistent with elevated volcanic unrest and therefore the Volcanic Alert Level remains at Level 2. The Aviation Colour Code has been raised to Yellow.
Mt Ruapehu is an active volcano and has the potential to erupt with little or no warning when in a state of elevated volcanic unrest.
The Volcanic Alert Level reflects the current level of elevated volcanic unrest. The Volcanic Alert Level should not be used to forecast future activity. However, at Volcanic Alert Level 2, eruptions are usually more likely than at Volcanic Alert Level 1.
Volcanic Alert Level 2 indicates the primary hazards are those expected during volcanic unrest; steam discharge, volcanic gas, earthquakes, landslides and hydrothermal activity. While Volcano Alert Level 2 is mostly associated with volcanic unrest hazards, eruptions can still occur with little or no warning.
Source : Geonet / Geoff Kilgour / Duty Volcanologist.
Photo : Bradd Scott / GNS.
Japan / Ogasawara Islands , Funka Asane :
The Japan Meteorological Agency said an underwater volcano, far south of the country’s main island, Honshu, had erupted. It issued a volcanic warning for nearby waters.
The agency said a weather observation satellite recorded volcanic material erupting in the Funka Asane area of the Ogasawara Islands around 6 p.m. Sunday. The column stood about 5,500 meters above sea level. An image taken by the satellite shows it rising to the northeast above the waters.
The eruptions continued thereafter. The volcanic plumes reached 7,000 meters a.s.l. around 11:30 p.m. Sunday and 2:20 a.m. Monday.
The agency says volcanic activity may continue at Funka Asane. It calls on vessels sailing in nearby waters to remain vigilant for falling rocks, floating debris and the rapid spread of volcanic gases and ash. Funka Asane is located north of the island of Ioto, also known as Iwojima.
Weather agency records show it was the first eruption at Funka Asane since fishing boats observed two or three outbursts in the area each year from 1930 to 1945. The agency observed l discolored water in the area for about 40 years from 1953.
Funka Asane is about 130 kilometers from the underwater volcano Fukutoku-Oka-no-Ba, which caused a massive eruption last year.
Source : 3.nhk.or.jp
Photo : Himawari 8 JPN.
Azores , São Jorge :
Here are the latest Sentinel images showing magmatic uplift on Sao Jorge (as of the 27th). Uplift is significant on two sections of the island, indicating dyke intrusion. Over the past 72 hours, seismic activity has slowly decreased.
at 01:02 (March 27) an earthquake with a magnitude of 2.4 was recorded 3 km east of Santo Amaro, felt with maximum intensity IV (modified Mercalli scale) in the area of Candles and maximum intensity III/IV in Calheta and Ur Zelina;
at 01:42 (March 27) an earthquake with a magnitude of 2.5 was recorded 1 km northwest of Santo Amaro, felt with maximum intensity III/IV (Mercalli Modified Escala) in Urzelina, Santo Amaro, Candles and Rosais.
at 01:46 (March 27) an earthquake with a magnitude of 2.3 was recorded 1 km south of Beira, felt with maximum intensity III (modified Mercalli scale) in Santo Amaro and Candles;
at 09:47 (March 27) an earthquake with a magnitude of 1.7 3 km northwest of Urzelina, felt with maximum intensity III (modified Mercalli Escala) in Urzelina.
Source : prociv.azores.gov.p
Photos : Sentinel , , José Luís Ávila Silveira/Pedro Noronha e Costa (wikipedia).
Indonesia , Semeru :
VOLCANO OBSERVATORY NOTICE FOR AVIATION – VONA
Issued : March 27 , 2022
Volcano : Semeru (263300)
Current Aviation Colour Code : ORANGE
Previous Aviation Colour Code : orange
Source : Semeru Volcano Observatory
Notice Number : 2022SMR84
Volcano Location : S 08 deg 06 min 29 sec E 112 deg 55 min 12 sec
Area : East java, Indonesia
Summit Elevation : 11763 FT (3676 M)
Volcanic Activity Summary :
Eruption with volcanic ash cloud at 23h40 UTC (06h40 local). Eruption and ash emission is continuing
Volcanic Cloud Height :
Best estimate of ash-cloud top is around 14323 FT (4476 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer.
Other Volcanic Cloud Information :
Ash-cloud moving to north
Source et photo : Magma Indonésie.
Nicaragua , Telica :
The Telica volcano continues to record low intensity explosions.
The National System for Prevention, Mitigation and Attention to Disasters (SINAPRED) reported on Sunday that the Telica volcano, located in the department of León, continues to experience sporadic and low-intensity explosions, with ash exhalations.
Most of the ash falls on the slopes of the volcano, and very little is carried by the wind to the west and southwest of the volcano, without representing a danger to the population of the surrounding communities.
For their part, the San Cristobal, Cerro Negro, Masaya, Momotombo and Concepción volcanoes maintain their activity with normal recordings of active volcanoes.
Source : nuevaya.com.ni
Photo : Enfoque Noticias.
Hawaii , Mauna Loa :
19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Activity Summary:
Mauna Loa volcano is not erupting. Rates of seismicity and CO2 concentrations at Sulphur Cone remain slightly elevated above long-term background levels, but have not changed significantly over the past week. Other Mauna Loa monitoring data streams—ground deformation, all other gas concentrations, visual appearance in webcams—show no significant changes.
Observations:
During the past week, HVO seismometers recorded approximately 55 small-magnitude (below M3.0) earthquakes below the summit and upper-elevation flanks of Mauna Loa. The majority of these earthquakes occurred at shallow depths less than 15 kilometers (9 miles) below sea level.
Global Positioning System (GPS) measurements show very low rates of deformation in the summit region continuing through the past week.
Concentrations of sulfur dioxide (SO2) and hydrogen sulfide (H2S), as well as fumarole temperatures, remain stable at both the summit and at Sulphur Cone, on the upper Southwest Rift Zone. Concentrations of carbon dioxide (CO2) are also stable at the summit, but have slowly increased over the past year at Sulphur Cone. The CO2 measured concentrations remain low compared to many other volcanic areas globally.
Webcam views have shown no changes to the volcanic landscape on Mauna Loa over the past week.
Source et photo : HVO.