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Masaya volcano (Nicaragua): new signs of unrest (?)

Mon, 14 Dec 2015, 10:26
10:26 AM | BY: T
Crater glow at Masaya volcano this morning (INETER crater webcam)
Crater glow at Masaya volcano this morning (INETER crater webcam)
According to local press articles referring to information from INETER, the volcano's activity is on the rise, with "lava being close to the surface".
The main crater of the volcano appears covered with debris from rockfalls from the crater walls, but visible incandescence, strong degassing sounds and small flames (from combusting gasses) jetting from between cracks on the floor, suggest that lava might be not far underneath and could again lead to the formation of a new lava lake, last observed in 1999.
On the other hand, seismic activity has been at low levels and not shown significant variations recently, not suggesting that significant movements of magma towards the surface have taken place.
Also, the incandescence of the vent at the main crater has been there for a number of years already.

Previous news

Wed, 9 Dec 2015, 06:00

Masaya volcano (Nicaragua) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 December-15 December 2015 (New Activity / Unrest)

INETER reported that during 11-12 December a lava lake formed in Masaya's Santiago Crater, small explosions were recorded, and rumbling was heard. ... Read all
Fri, 28 Jun 2013, 15:02

Masaya volcano (Nicaragua) activity update

Seismic recording from Masaya (MASN station, INETER)
Seismic activity remains low. ... Read all
Show more
Masaya volcano
caldera 635 m / 2,083 ft
Nicaragua, 11.98°N / -86.16°W
Current status: erupting (4 out of 5) Masaya volcano eruptions:
2012, 2008, 2006, 2005, 2004 (?), 2003, 2001, 1999-2000, 1998, 1997, 1996, 1993-94, 1989, 1987, 1965-85, 1948, 1946-47, 1925, 1919-24, 1918, 1913, 1906, 1904, 1902-03, 1858-59, 1858 (?), 1856-57, 1853, 1852, 1772, 1670, 1613 (?), 1586, 1570, 1551, 1524-44
Tephrochronology and radiocarbon-dated: 150 AD, 170 BC ± 100 years, 4050 BC
Typical eruption style
effusive, sometimes lava lakes, strombolian activity
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