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San Miguel

Stratovulcano · El Salvador · 2130 m

Symmetrical San Miguel volcano towers 2000 m above a barren basaltic lava flow erupted from a SE-flank vent in 1819. The conical volcano is not the highest volcano in El Salvador, but is one of the most prominent, since it rises from near sea level on the Pacific coastal plain. San Miguel (also known as Chaparrastique) is one of the most active volcanoes of El Salvador, with more than two dozen eruptions recorded since the beginning of the Spanish era.
Symmetrical San Miguel volcano towers 2000 m above a barren basaltic lava flow erupted from a SE-flank vent in 1819. The conical volcano is not the highest volcano in El Salvador, but is one of the most prominent, since it rises from near sea level on the Pacific coastal plain. San Miguel (also known as Chaparrastique) is one of the most active volcanoes of El Salvador, with more than two dozen eruptions recorded since the beginning of the Spanish era. · Foto: Photo by Carlos Pullinger, 1996 (Servicio Nacional de Estudios Territoriales, El Salvador). · Wikimedia Commons
Tipo
Stratovulcano
Paese
El Salvador
Regione
Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
Altitudine
2130 m
Coordinate
13.434, -88.269
Ultima eruzione
2023
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The symmetrical cone of San Miguel, one of the most active volcanoes in El Salvador, rises from near sea level to form one of the country's most prominent landmarks. A broad, deep, crater complex that has been frequently modified by eruptions recorded since the early 16th century caps the truncated unvegetated summit, also known locally as Chaparrastique. Flanks eruptions of the basaltic-andesitic volcano have produced many lava flows, including several during the 17th-19th centuries that extended to the N, NE, and SE. The SE-flank flows are the largest and form broad, sparsely vegetated lava fields crossed by highways and a railroad skirting the base of the volcano. Flank vent locations have migrated higher on the edifice during historical time, and the most recent activity has consisted of minor ash eruptions from the summit crater.

Sintesi da Wikipedia

Il vulcano San Miguel è localizzato nel comune salvadoregno di San Miguel, a circa quindici Km dalla cittadina omonima.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1510~1561 · 1 eruzioni · VEI max. ?1664~1715 · 1 eruzioni · VEI max. 21715~1766 · 1 eruzioni · VEI max. 21766~1817 · 4 eruzioni · VEI max. 21817~1868 · 7 eruzioni · VEI max. 21868~1920 · 4 eruzioni · VEI max. 21920~1971 · 13 eruzioni · VEI max. 21971~2022 · 14 eruzioni · VEI max. 315101612176618681971

Cronologia dettagliata

  1. 2022VEI 2Osservata
    2022-11-15 – 2023-05-27
  2. 2020VEI 1Osservata
    2020-02-22 – 2020-02-22
  3. 2018VEI 1Osservata
    2018-01-14 – 2018-03-04
    Summit crater
  4. 2017VEI 1Osservata
    2017-01-07 – 2017-01-07
    Summit crater
  5. 2016VEI 1Osservata
    2016-01-12 – 2016-01-18
    Summit crater
  6. 2016VEI 1Osservata
    2016-06-18 – 2016-06-18
    Summit crater
  7. 2015VEI 1Osservata
    2015-08-13 – 2015-08-13
    Summit crater
  8. 2015VEI 1Osservata
    2015-01-26 – 2015-04-11
    Summit crater
  9. 2013VEI 3Osservata
    2013-12-29 – 2014-07-28
    Summit Crater
  10. 2002VEI 1Osservata
    2002-01-16 – 2002-01-16
  11. 1997VEI 1Osservata
    1997-12-31 – In corso
  12. 1995VEI 1Osservata
    1995-01-12 – 1995-04-19
  13. 1985VEI 1Osservata
    1985-11-16 – 1986-02-16
  14. 1976VEI 1Osservata
    1976-12-02 – 1977-03-01
  15. 1970VEI 1Osservata
    1970-03-30 – 1970-04-05
  16. 1967VEI 2Osservata
    1967-01-05 – In corso
  17. 1966VEI 2Osservata
    1966-02-22 – In corso
  18. 1966VEI 2Osservata
    1966-07-16 – In corso
  19. 1965VEI 2Osservata
    1965-06-14 – In corso
    Summit crater
  20. 1964VEI 2Osservata
    1964-10-23 – 1964-11-16
  21. 1954VEI 2Osservata
    1954-10-21 – 1954-10-21
  22. 1939VEI 2Osservata
    1939-05 – 1939-07
  23. 1936VEI 2Stima geologica
    1936 – In corso
  24. 1931VEI 2Osservata
    1931-03 – 1931-06
  25. 1930VEI 2Osservata
    1930-01-26 – In corso
  26. 1929VEI 2Osservata
    1929-08 – In corso
  27. 1920VEI 2Osservata
    1920-08-14 – 1925
  28. 1919VEI 2Osservata
    1919-12-10 – 1920-01
  29. 1890VEI 2Osservata
    1890 – 1891
  30. 1884VEI 2Osservata
    1884-01-25 – 1884-01-28
    NE side of main crater
  31. 1882VEI 2Osservata
    1882-12-05 – In corso
  32. 1867VEI 2Osservata
    1867-12-14 – 1868-02-16
    WSW flank (1000 m)
  33. 1862VEI 2Osservata
    1862-01 – In corso
  34. 1857VEI 2Osservata
    1857-11 – In corso
  35. 1855VEI 2Osservata
    1855-12 – In corso
    SSE flank (800 m)
  36. 1854VEI 2Stima geologica
    1854 – In corso
  37. 1844VEI 2Osservata
    1844-07-25 – 1848
    NNW (1120 m) and upper east flanks
  38. 1819VEI 2Osservata
    1819-07-18 – In corso
    SSE flank (400 m; near Los Perolitos)
  39. 1811VEI 2Stima geologica
    1811 – In corso
  40. 1798VEI 2Stima geologica
    1798 – In corso
  41. 1787VEI 2Osservata
    1787-09-21 – 1787-09-23
    Summit, north and SE flanks
  42. 1769VEI 2Osservata
    1769 – In corso
    East flank ?
  43. 1762VEI 2Osservata
    1762 – In corso
    NE flank (400 m)
  44. 1699VEI 2Osservata
    1699 – In corso
    SE flank (400 m)
  45. 1510 (±5 anni)VEI ?Osservata
    1510 – In corso

Link esterni

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