Estados Unidos · Estratovolcán
Pavlof
- Tipo
- Estratovolcán
- Altitud
- 2493 m
- Última erupción
- 2022
- Tipo
- Estratovolcán
- País
- Estados Unidos
- Región
- América del Norte / Aleutian Ridge Volcanic Arc
- Altitud
- 2493 m
- Coordenadas
- 55.417, -161.894
- Última erupción
- 2022
- Contexto tectónico
- Zona de subducción / Corteza continental (> 25 km)
- Forma volcánica
- Compuesto
- Roca principal
- Andesita / Andesita basáltica
Resumen geológico
The most active volcano of the Aleutian arc, Pavlof is a Holocene stratovolcano that was constructed along a line of vents extending NE from the Emmons Lake caldera. Pavlof and Pavlof Sister to the NE form a dramatic pair of symmetrical, glacier-covered stratovolcanoes that overlook Pavlof and Volcano bays. Little Pavlof is a smaller cone on the SW flank of Pavlof volcano, near the rim of Emmons Lake caldera. Unlike Pavlof Sister, eruptions have frequently been reported from Pavlof, typically Strombolian to Vulcanian explosive eruptions from the summit vents and occasional lava flows. The active vents lie near the summit on the north and east sides. The largest recorded eruption took place in 1911, at the end of a 5-year-long eruptive episode, when a fissure opened on the N flank, ejecting large blocks and issuing lava flows.
Resumen de Wikipedia
Resumen en inglésMount Pavlof or Pavlof Volcano is a stratovolcano of the Aleutian Range on the Alaska Peninsula. It has been one of the most active volcanoes in the United States since 1980, with eruptions recorded in 1980, 1981, 1983, 1986–1988, 1996–1997, 2007, 2013, twice in 2014, 2016, and again in 2021-2022. It is not currently erupting (as of October 15, 2024). The most common lava type here is basaltic andesite and the 2013-2014 lavas contained approximately 53 wt.% SiO2. The volcano is monitored by the Alaska Volcano Observatory- a joint program of the United States Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS). With a threat score of 95, the threat from future eruptions is considered to be high; much of this threat comes from the possibility of disruption of nearby air routes by large releases of ash. The mountain shares a name with the nearby Pavlof Sister, which is thought to have last erupted from 1762 to 1786, although this period of activity is sometimes attributed to Pavlof volcano instead.
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Historial de erupciones
48 registradasGlosarioLínea de tiempo detallada
- 2021VEI 2Observado2021-08-05 – 2022-12-07
- 2016VEI 2Observado2016-03-27 – 2016-07-30Summit crater
- 2014VEI 3Observado2014-05-31 – 2014-06-06NE flank
- 2014VEI 3Observado2014-11-12 – 2014-11-15Vent just N of summit and N flank
- 2013VEI 3Observado2013-05-13 – 2013-06-26Summit crater
- 2007VEI 2Observado2007-08-15 – 2007-09-13
- 2001VEI 1Método no indicado2001-06-05 – fin desconocido
- 1996VEI 2Observado1996-09-11 – 1997-01-03
- 1990VEI 2Observado1990-03-05 – 1990-03-05
- 1986VEI 3Observado1986-04-16 – 1988-08-13NNE & SE summit vents, NE & SE flanks
- 1983VEI 2Observado1983-07-11 – 1983-07-18
- 1983VEI 3Observado1983-11-11 – 1983-12-18Upper NNE flank
- 1982VEI 1Método no indicado1982-07-15 – fin desconocido
- 1981VEI 1Observado1981-03-30 – 1981-05-28
- 1981VEI 3Observado1981-09-25 – 1981-09-27Upper NNE flank (100 m below summit)
- 1980VEI 1Observado1980-07-06 – fin desconocido
- 1980VEI 3Observado1980-11-08 – 1980-11-13Upper NNE flank
- 1975VEI 2Observado1975-09-13 – 1977-03-16
- 1974VEI 1Observado1974-03-12 – 1974-03-24
- 1974VEI 3Observado1974-09-01 – 1975-01-13
- 1973VEI 2Observado1973-11-12 – 1973-11-13Upper NE flank
- 1966VEI 2Observado1966-03-15 – fin desconocidoUpper NE or NNE flank
- 1960VEI 2Observado1960-07-02 – 1963-06-16Upper NE or NNE flank
- 1958VEI 2Observado1958-05-17 – 1958-08-28Upper NNE flank
- 1953VEI 1Observado1953-11-25 – 1954-08-16Upper NE or NNE flank
- 1951VEI 2Observado1951-10-16 – 1952-02-16Upper NE or NNE flank
- 1950VEI 2Observado1950-07-31 – 1951-05-16Upper NE or NNE flank
- 1936VEI 3Observado1936-07-02 – 1948-05-16
- 1929VEI 2Observado1929-03-16 – 1931-08-16
- 1924VEI 2Observado1924-01-17 – fin desconocido
- 1922VEI 2Observado1922-12-24 – 1923-02-28
- 1917VEI 2Observado1917-10-16 – fin desconocido
- 1914VEI 2Observado1914-07-06 – fin desconocido
- 1906VEI 3Observado1906-07-02 – 1911-12-07Summit and north flank fissure
- 1901VEI 2Observado1901-07-02 – fin desconocido
- 1894VEI 2Observado1894-07-02 – fin desconocido
- 1892VEI 2Observado1892-07-02 – fin desconocido
- 1886VEI 2Observado1886-07-02 – fin desconocido
- 1880VEI 1Observado1880-07-02 – fin desconocido
- 1866VEI 2Observado1866-03-14 – fin desconocido
- 1852VEI 1Método no indicado1852-07-02 – fin desconocidoUpper north flank
- 1846VEI 2Observado1846-08-16 – 1846-08-16
- 1845VEI 2Observado1845-08-12 – fin desconocido
- 1838VEI 1Observado1838-07-02 – fin desconocido
- 1825VEI 2Observado1825-07-02 – fin desconocido
- 1817VEI 2Observado1817-07-02 – fin desconocido
- 1790VEI 2Observado1790 – fin desconocido
- 1762VEI 4Método no indicado1762 – 1786Volcano Uncertain
Volcanes cercanos
Enlaces externos
⚠ Solo como referencia. No apto para respuesta ante emergencias.