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Ring of Fire Volcanoes

  • Powerful Eruption in Ecuador Covers Cities in Ash

    The eruption of a volcano in Ecuador’s Amazon region left several cities covered in ash on Tuesday.

    The strong eruption fueled concerns of a potential health impact as the South American nation slowly emerges from a brutal coronavirus outbreak.

    The Sangay volcano has had moderate eruptions for over a year that have had little impact because of its remote location, but a recent change in wind patterns has pushed ash toward the coast and affected areas including the largest city, Guayaquil.

    The ash comes out of the Sangay volcano and spreads into the Guayas province, and we see a quantity of ash that is arriving near Guayaquil,” Benjamin Bernard of the Geophysical Institute of Ecuador told reporters, referring to the province where Guayaquil is located.

  • Violent Eruption at Merapi Volcano, Ash Ejection to 20,000 Feet, Indonesia

    Indonesia's Mount Merapi has erupted twice on Sunday, June 21, 2020, ejecting ash up to 6 000 m (20 000 feet) into the sky, according to the Center for Volcanology and Geological Hazard Mitigation (PVMBG). The first explosion occurred at 02:13 UTC (09:13 LT) and lasted for more than five minutes, while the second one took place minutes later at 02:27 UTC (09:13 LT), with a duration of about 2 minutes.

    As of 09:16 UTC (16:16 LT) on June 21, the Aviation Color Code is Yellow, which indicates that volcanic activity has decreased significantly but continues to be monitored closely for a possible increase.

    The direction of the wind to the west caused ash to fall in the regencies of Magelang and Kulonprogo, as said in a statement issued by the Yogyakarta Geological Disaster Technology Research and Development Center (BPPTKG).

    "Both eruptions were recorded on a seismogram with an amplitude of 75 mm," it wrote. The column height reached more than 6 000 m (20 000 feet) from the summit.

    The Magelang Regency Disaster Management Agency (BPBD) reports that light and heavy volcanic ash rain showered 39 villages in 8 sub-districts in the Magelang Regency: Srumbung (heavy), Dukun (light), Sawangan (light), Salam (light), Muntilan (light), Ngluwar (light), Mungkid (light), and Borobudur (light).

    Indonesia’s Badan Nasional Penanggulangan Bencana (BNPB) reports that thin ash is distributed in several areas around the slopes of Mount Merapi (Tlogo Lele, Boyolali Regency, Central Java). Whereas in other places, residents in the Turi, Pakem and Yogyakarta cities do not see volcanic ash.

    The farthest ashfall was reported in the Grimulyo District area, Kulon Progo, which is about 45 km (28 miles) from the volcano's peak.

    BPPTKG noted that prior to the explosive eruption, there has been an increase in seismicity since June 8. There were 80 volcanic-tectonic earthquakes between that day up to June 20.

    The agency warned people to avoid the area within a radius of 3 km (1.9 miles) from Merapi's peak.

    Mount Merapi is one of Indonesia's most active volcanoes. In 2010, an eruption killed more than 300 and forced almost 400 000 to evacuate.

    Geological summary

    Merapi, one of Indonesia's most active volcanoes, lies in one of the world's most densely populated areas and dominates the landscape immediately north of the major city of Yogyakarta. It is the youngest and southernmost of a volcanic chain extending NNW to the Ungaran volcano.

    Growth of Old Merapi during the Pleistocene ended with major edifice collapse perhaps about 2 000 years ago, leaving a large arcuate scarp cutting the eroded older Batulawang volcano. 

    Subsequently, the growth of the steep-sided Young Merapi edifice, its upper part unvegetated due to frequent eruptive activity, began SW of the earlier collapse scarp. Pyroclastic flows and lahars accompanying growth and collapse of the steep-sided active summit lava dome have devastated cultivated lands on the western-to-southern flanks and caused many fatalities during historical time. (GVP)

  • Volcán de Fuego Erupts as Powerful Lahars Sweep the Slopes, Guatemala

    Strong lahars descended down the slopes of the Volcán de Fuego in El Jute and Las Lajas ravines.

    The two ravines are on the eastern flank of the volcano and are tributaries of the Achuguate and Guacalate rivers.

    The volcanic eruption on the 4th of July:

    The ferocious river of mud on the 5th of July:

    In this video, you even see people being dragged and saved from a stranded car:

    Notable lahars include those at Mount Pinatubo and Nevado del Ruiz, the latter of which killed thousands of people in the town of Armero.

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