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Santa Ana volcano (El Salvador) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 January-23 January 2001 (New Activity / Unrest)

Wed, 17 Jan 2001, 06:00
06:00 AM | BY: VN
Beginning on 12 January several news reports stated that increased volcanic activity occurred at Santa Ana volcano. The Washington VAAC reported that an eruption occurred at 1800 on 16 January that sent ash to ~3.7 km a.s.l. Local observations by volcanologists revealed that an eruption did not occur and no new lava or magma was in the summit crater.
Glowing cracks that were visible at night were determined to be an existing fumarole field with measured temperatures of 550 °C. Scientists believe that a magnitude 7.7 earthquake that occurred off the coast of Central America at 1133 on 13 January, killing several hundred people, did not cause an increase in activity at the volcano. Since 12 January there have been reports of increased gas emissions and the volcano is being closely monitored for any changes in activity.

Sources: US Geological Survey Volcano Disaster Assistance Program (VDAP), Washington Volcanic Ash Advisory Center (VAAC), US Geological Survey Earthquake Hazards Program, La Prensa Grafica, Diario del Hoy (elsalvador.com)
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From: Global Volcanism Program, 2001. Report on Santa Ana. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 17 January-23 January 2001. Smithsonian Institution and US Geological Survey.
Santa Ana volcano
stratovolcano 2381 m / 7,812 ft
El Salvador, 13.85°N / -89.63°W
Current status: normal or dormant (1 out of 5) Santa Ana volcano eruptions:
2005, 1920, 1904, 1884, 1882(?), 1880, 1879, 1878(?), 1874, 1734, 1722, 1621(?), 1576, ?1570, 1524, 1521, 1520(?)
Typical eruption style
explosive
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