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Report on Sabancaya (Peru) — 21 December-27 December 2016


Sabancaya

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 21 December-27 December 2016
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2016. Report on Sabancaya (Peru) (Sennert, S, ed.). Weekly Volcanic Activity Report, 21 December-27 December 2016. Smithsonian Institution and US Geological Survey.

Weekly Report (21 December-27 December 2016)

Sabancaya

Peru

15.787°S, 71.857°W; summit elev. 5960 m

All times are local (unless otherwise noted)


Based on webcam and satellite views, the Buenos Aires VAAC reported that during 21-26 December intermittent, strong ash puffs from Sabancaya rose 6.4-7.6 km (25,000-28,000 ft) a.s.l. and drifted in multiple directions.

Geological Summary. Sabancaya, located in the saddle NE of Ampato and SE of Hualca Hualca volcanoes, is the youngest of these volcanic centers and the only one to have erupted in historical time. The oldest of the three, Nevado Hualca Hualca, is of probable late-Pliocene to early Pleistocene age. The name Sabancaya (meaning "tongue of fire" in the Quechua language) first appeared in records in 1595 CE, suggesting activity prior to that date. Holocene activity has consisted of Plinian eruptions followed by emission of voluminous andesitic and dacitic lava flows, which form an extensive apron around the volcano on all sides but the south. Records of observed eruptions date back to 1750 CE.

Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)