Both craters were releasing thin white and blue vapours. ", Explosive activity from two craters; small pyroclastic flows. Seven stronger anomalies were detected in December 2012 on the 9th (1 pixel), 11th (1), 18th (1), 23rd (3), and 25th (1); the pixels identified during 9-23 December were close to the active crater. Glow and ejections of incandescent lava fragments from Crater 2 were occasionally observed, and rumbling and explosion sounds were heard throughout the month. On 19, 16, and 27 October, the ash clouds rose less than 2 km before being blown WNW. Consecutive ashfalls were blown SE over unpopulated areas. "Activity increased somewhat in June as Vulcanian explosions became more frequent. Reports received by mid-day on 5th indicated the activity to be continuing. "Activity at Crater 3 was mild for the first half of the month, with moderate or weak emission of thin white vapour. "Crater 3 activity may have declined during the month. Eruption of Langila Volcano, New Britain. . Weak red crater glow was seen on ~30% of the nights and ejections of incandescent lava fragments were occasionally observed. Based on analyses of satellite imagery and wind-model data, the Darwin VAAC reported that during 1-3 August ash plumes from Langila rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 75 km N, NW, and W. Based on analyses of satellite imagery, the Darwin VAAC reported that during 21-22 April ash plumes from Langila rose to an altitude of 2.1 km (7,000 ft) a.s.l. Fine ashfall to the SE of the volcano was reported on 3 January. Later, on 7-8 May, the identifiable plume was half as long and diminishing. Weak night glow was observed from 20 July onward. "Activity remained at a low level during June. The concluding stages of explosions were characterized by streaming of translucent vapour followed by conspicuous emission of blue vapour. Weak rumbling noises occasionally were heard on the 4th. Occasional weak vapour emissions were observed from Crater 3 on the 4-5th, 10-11th, 13th, and 22nd.". 2005: April During the remainder of the month Crater 2 usually released white vapours at low rates. Langila was last reported in BGVN 28:03, following a large ash-bearing explosion on 18 January 2003. 2020: July On a few occasions, falls of ash took place in inhabited areas about 10 km downwind from the vent. There are no telephones nearby, and since then they have had to rely on mailed reports (very infrequent), reports from pilots, and the Darwin VAAC. . "By 15 October, ash-laden emissions from Crater 2 became continuous. The explosion on the 30th was much smaller, the ash column rising only a few hundred meters. Weak to moderate vapor emissions continue from Crater 2. Weak red glow was observed at the summit on the nights of 4 and 9-11 January, by which time the number of explosion shocks had decreased to 1-3/day. Its floor is now at the level of the upper bench described in the last ground inspection, in June 1989 (SEAN 14:06). This activity was accompanied by nearly continuous low roaring sounds. Courtesy of the Darwin VAAC. | April One explosion noise was heard on the 12th, and occasional rumbling noises were heard on the 17th and 23rd. ", "Activity consisted of weak to moderate white-grey emissions from Crater 2. A thorough search of MODIS image data (i.e. Ash was not detected in satellite imagery. The only sound from this crater during November was a deep loud explosion on 28 November and rumbling noises on the 29th and 30th. Dark eruption clouds were occasionally seen, and loud explosions and rumblings were heard. During 16 February to 31 March, low-level Vulcanian activity continued at Langila's Crater 2. Emissions included thin, white to thick, gray vapor-and-ash clouds. The largest number of alert pixels was 3 on 14 August. In contrast, Crater 2 explosions were muffled and ash emission less frequent. and drifted NNW. Weak rumbling and roaring noises occasionally accompanied the emissions and fairly significant ash columns were forcefully ejected to 2 km height on 4, 9, 11, and 30 May. Since then, Tom Casadevall learned of an aircraft encounter with an ash cloud that was presumably from Langila. Some of these explosions were large enough to be recorded by a seismometer 9 km away. However, stronger emissions on 12 and 25 November produced eruption columns ~200 m high and ashfalls ~10 km downwind. Incandescence was visible on 24 and 25 February and 6 and 8 March. and drifted 35 km W. RVO reported that emission of ash and white vapor plumes from Langila's Crater 2 continued during 1-16 October. The emissions were continuous on 6, 7, and 10 June and accompanied by roaring noises. continued through May. Rumblings were heard throughout, occasionally augmented by explosive sounds. Activity from Crater 3 consisted of weak white vapour emissions. ", "Activity in June remained at the low level established in late May. Geol Surv Papua New Guinea Mem, 10: 125-134. Gradual decline in activity after July 2017, but continuing through May 2018. By the end of the month, the eruptive activity had declined to persistent degassing, with a few explosion shocks recorded daily.". Between 11 and 16 April, ash emissions became more frequent. The heights of the plumes were not reported. Ash-and-vapor clouds and occasional night glow. Crater 3 released very thin to occasionally moderately thick white vapour. Plumes at and Manam were strong, and plume was small. Explosion and rumbling sounds were heard at an observation post about 10 km N of Langila. "The amplitude of discontinuous tremor declined markedly in late August, while cumulative daily tremor duration dropped to <=100 minutes from levels that had been as high as 200 minutes/day since mid-June. No corroborative reports of activity have been received from the Rabaul Volcano Observatory or the Darwin Volcanic Ash Advisory Center (VAAC). Night glow around the crater mouth was visible only on the 1st and 5th. . As eruption intensity waned, discrete earthquakes associated with Vulcanian explosions at Crater 2 became prominent.". During early May, incandescent lava fragments were ejected. On 3 February the glow fluctuated. Activity at Crater 3 was mostly confined to weak-moderate emissions of white vapour accompanied by pale grey ash clouds and wisps of blue vapour on 26 and 28 January. Steady night glow was seen throughout the month without any other sign of eruptive activity.". An unusually thick column of white vapor has been issuing from this crater during the last few weeks and a number of explosions were reported during May. 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