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Poás

Poas

Stratovulcano · Costa Rica · 2697 m

Poás is a broad volcano with a summit area containing three craters and is one of the most active volcanoes of Costa Rica. This photo from the east shows a plume rising from the active summit crater, which has been the site of frequent phreatic and phreatomagmatic eruptions since 1828, and the lake filled Botos crater to the left.
Poás is a broad volcano with a summit area containing three craters and is one of the most active volcanoes of Costa Rica. This photo from the east shows a plume rising from the active summit crater, which has been the site of frequent phreatic and phreatomagmatic eruptions since 1828, and the lake filled Botos crater to the left. · Foto: Photo by Mike Carr (Rutgers University). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Costa Rica
Regione
Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
Altitudine
2697 m
Coordinate
10.200, -84.233
Ultima eruzione
2026
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The broad vegetated edifice of Poás, one of the most active volcanoes of Costa Rica, contains three craters along a N-S line. The frequently visited multi-hued summit crater lakes of the basaltic-to-dacitic volcano are easily accessible by vehicle from the nearby capital city of San José. A N-S-trending fissure cutting the complex stratovolcano extends to the lower N flank, where it has produced the Congo stratovolcano and several lake-filled maars. The southernmost of the two summit crater lakes, Botos, last erupted about 7,500 years ago. The more prominent geothermally heated northern lake, Laguna Caliente, is one of the world's most acidic natural lakes, with a pH of near zero. It has been the site of frequent phreatic and phreatomagmatic eruptions since an eruption was reported in 1828. Eruptions often include geyser-like ejections of crater-lake water.

Sintesi da Wikipedia

Il Poás è un vulcano della Costa Rica centrale, non distante dalla capitale San José. Si tratta di uno dei siti naturalistici più visitati del Paese, sia a causa della posizione geografica favorevole che per il fatto di essere ammantato da folte foreste. È tutelato dall'istituzione dell'omonimo parco nazionale, che si estende per 5600 ettari.

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
7920 BCE~7588 BCE · 2 eruzioni · VEI max. ?5599 BCE~5268 BCE · 1 eruzioni · VEI max. ?4273 BCE~3942 BCE · 1 eruzioni · VEI max. ?958 BCE~627 BCE · 1 eruzioni · VEI max. ?36~368 · 1 eruzioni · VEI max. ?1031~1362 · 1 eruzioni · VEI max. ?1694~2025 · 58 eruzioni · VEI max. 27920 BCE5599 BCE2947 BCE627 BCE1694

Cronologia dettagliata

  1. 2025VEI ?Osservata
    2025-01-05 – 2026-03-16
  2. 2023VEI 1Osservata
    2023-08-02 – 2023-08-11
  3. 2023VEI 1Osservata
    2023-12-01 – 2024-05-05
  4. 2022VEI 1Osservata
    2022-04-06 – 2022-04-06
    Crater lake - Fumarola Naranja
  5. 2019VEI 2Osservata
    2019-02-07 – 2019-09-30
    Caliente Summit Crater
  6. 2018VEI ?Osservata
    2018-05-25 – 2018-05-25
    Summit crater
  7. 2017VEI 1Osservata
    2017-04-12 – 2017-11-06
    Laguna Caliente Crater
  8. 2016VEI 1Osservata
    2016-06-05 – 2016-08-16
    Lake in summit crater
  9. 2009VEI 1Osservata
    2009-01-12 – 2009-03-21
  10. 2009VEI 1Osservata
    2009-11-16 – 2014-10-13
  11. 2008VEI 1Osservata
    2008-01-13 – 2008-01-13
  12. 2006VEI 1Osservata
    2006-03-24 – 2006-03-24
  13. 2006VEI 1Osservata
    2006-09-25 – 2006-12-16
  14. 1996VEI 1Osservata
    1996-04-08 – 1996-04-08
  15. 1994VEI 2Osservata
    1994-03-16 – 1994-10-16
  16. 1992VEI 1Osservata
    1992-02-16 – 1992-03-16
  17. 1992VEI 0Osservata
    1992-10-16 – 1993-09-16
  18. 1991VEI 1Osservata
    1991-03-06 – 1991-09-16
  19. 1987VEI 2Osservata
    1987-06-16 – 1990-06-16
  20. 1981VEI 1Osservata
    1981-03-16 – 1981-05-16
  21. 1980VEI 1Osservata
    1980-09-12 – 1980-09-12
  22. 1980VEI 1Osservata
    1980-12-26 – 1980-12-26
  23. 1979VEI 1Osservata
    1979-09-08 – 1980-01-16
  24. 1978VEI 1Osservata
    1978-09-22 – 1978-12-16
  25. 1977VEI 1Osservata
    1977-05-16 – 1977-07-16
  26. 1977VEI 2Osservata
    1977-12-18 – 1978-06-15
  27. 1976VEI 2Osservata
    1976-06-21 – 1976-11-16
  28. 1974VEI 2Osservata
    1974-09-11 – 1975-02-16
  29. 1972VEI 2Osservata
    1972-02-09 – 1973-09-08
  30. 1970VEI 1Osservata
    1970-07-16 – In corso
  31. 1969VEI 2Osservata
    1969-05-03 – 1969-06-03
  32. 1968VEI 1Osservata
    1968-07-02 – In corso
  33. 1967VEI 1Osservata
    1967-01-01 – In corso
  34. 1964VEI 2Osservata
    1964-12-25 – 1965-03-16
  35. 1963VEI 2Osservata
    1963-05-23 – 1963-07-02
  36. 1958VEI 2Osservata
    1958-07-02 – 1961-07-03
  37. 1952VEI 2Osservata
    1952-03-23 – 1957-12-25
  38. 1948VEI 1Osservata
    1948 – 1951-07-02
  39. 1946VEI 1Osservata
    1946-11-04 – In corso
  40. 1941VEI 1Osservata
    1941 – 1946
  41. 1932VEI 1Osservata
    1932 – 1934
  42. 1929VEI 1Osservata
    1929 – In corso
  43. 1925VEI 1Osservata
    1925 – In corso
  44. 1916VEI 2Osservata
    1916 – In corso
  45. 1914VEI 2Osservata
    1914-05-30 – In corso
  46. 1914VEI 2Osservata
    1914-10-08 – 1915-05-15
  47. 1910VEI 2Osservata
    1910-01-25 – 1910-02
  48. 1910VEI 1Osservata
    1910-09-12 – 1910-10-14
  49. 1898VEI 1Osservata
    1898-12-29 – 1907-12-31
  50. 1895VEI 1Osservata
    1895 – In corso
  51. 1888VEI 1Osservata
    1888-01 – 1891
  52. 1880VEI 1Osservata
    1880 – In corso
  53. 1879VEI 1Stima geologica
    1879 – In corso
  54. 1860VEI 1Osservata
    1860 – In corso
  55. 1838VEI 2Stima geologica
    1838 – In corso
  56. 1834VEI 2Osservata
    1834 – In corso
  57. 1828VEI 1Osservata
    1828 – In corso
  58. 1747VEI 2Osservata
    1747 – In corso
  59. 1280VEI ?Stima geologica
    1280 – In corso
    North flank (Bosque Alegre)
  60. 210VEI ?Stima geologica
    210 – In corso
    North flank (Bosque Alegre)
  61. 760 a.C. (±200 anni)VEI ?Stima geologica
    BCE 760 – In corso
    North flank (Bosque Alegre)
  62. 3950 a.C.VEI ?Stima geologica
    BCE 3950 – In corso
    North flank (Cerro Congo)
  63. 5590 a.C. (±100 anni)VEI ?Stima geologica
    BCE 5590 – In corso
    Botos Cone
  64. 7620 a.C. (±100 anni)VEI ?Stima geologica
    BCE 7620 – In corso
  65. 7920 a.C. (±75 anni)VEI ?Stima geologica
    BCE 7920 – In corso

Link esterni

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