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ネグロ山

Negro, Cerro

火砕丘 · Nicaragua · 728m

Cerro Negro, the largest and youngest of a group of four cinder cones that were constructed along a N-S line, is Central America's youngest volcano. Since its formation in 1850, Cerro Negro has produced frequent explosive eruptions, building a 250-m-high cinder cone surrounded by a fresh lava field. This 1995 photo from the southernmost of the older cones to the NNE shows flow levees and lava flows at the left side of Cerro Negro that were produced during the 1995 eruption. The vegetated peak in the background is part of the Las Pilas complex.
Cerro Negro, the largest and youngest of a group of four cinder cones that were constructed along a N-S line, is Central America's youngest volcano. Since its formation in 1850, Cerro Negro has produced frequent explosive eruptions, building a 250-m-high cinder cone surrounded by a fresh lava field. This 1995 photo from the southernmost of the older cones to the NNE shows flow levees and lava flows at the left side of Cerro Negro that were produced during the 1995 eruption. The vegetated peak in the background is part of the Las Pilas complex. · 写真: Photo by Britt Hill, 1995 (Southwest Research Institute). · Wikimedia Commons
タイプ
火砕丘
国
Nicaragua
地域
Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
標高
728m
座標
12.506, -86.702
最終噴火
1999年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Minor
主要岩石
Basalt / Picro-Basalt
地質学的概要

Nicaragua's youngest volcano, Cerro Negro, was created following an eruption that began in April 1850 about 2 km NW of the summit of Las Pilas volcano. It is the largest, southernmost, and most recent of a group of four youthful cinder cones constructed along a NNW-SSE-trending line in the central Marrabios Range. Strombolian-to-subplinian eruptions at intervals of a few years to several decades have constructed a roughly 250-m-high basaltic cone and an associated lava field constrained by topography to extend primarily NE and SW. Cone and crater morphology have varied significantly during its short eruptive history. Although it lies in a relatively unpopulated area, occasional heavy ashfalls have damaged crops and buildings.

Wikipedia の要約

英語版の要約

Cerro Negro is an active volcano in the Cordillera de los Maribios mountain range in Nicaragua, about 10 km (6.2 mi) from the village of Malpaisillo. It is a very new volcano, the youngest in Central America, having first appeared in April 1850. It consists of a gravelly basaltic cinder cone, which contrasts greatly with the surrounding verdant hillsides, and gives rise to its name, which means Black Hill. Cerro Negro has erupted frequently since its first eruption. One unusual aspect of several eruptions has been the emission of ash from the top of the cone, while lava erupts from fractures at the base.

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噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1850~1865 · 1件 · 最大 VEI 21865~1880 · 1件 · 最大 VEI 21895~1910 · 1件 · 最大 VEI 21910~1925 · 3件 · 最大 VEI 31925~1939 · 1件 · 最大 VEI 21939~1954 · 5件 · 最大 VEI 31954~1969 · 8件 · 最大 VEI 31969~1984 · 1件 · 最大 VEI 31984~1999 · 3件 · 最大 VEI 318501880192519541984

詳細タイムライン

  1. 1999年VEI 2観測記録
    1999-08-05 ~ 1999-08-07
    South flank (near Cristo Rey crater)
  2. 1995年VEI 2観測記録
    1995-05-29 ~ 1995-12-06
  3. 1992年VEI 3観測記録
    1992-04-09 ~ 1992-04-14
  4. 1971年VEI 3観測記録
    1971-02-03 ~ 1971-02-14
    Summit and east flank
  5. 1969年VEI 1観測記録
    1969-12-19 ~ 1969-12-29
  6. 1968年VEI 3観測記録
    1968-10-23 ~ 1968-12-10
    Summit and south flank
  7. 1964年VEI 2地質学的推定
    1964-07-02 ~ 進行中
  8. 1963年VEI 1観測記録
    1963-03-16 ~ 進行中
  9. 1962年VEI 2観測記録
    1962-03-21 ~ 1962-04-16
  10. 1961年VEI 1観測記録
    1961-10-25 ~ 進行中
    NE-flank fissure
  11. 1960年VEI 3観測記録
    1960-09-28 ~ 1960-12-26
    Summit and south flank
  12. 1957年VEI 2観測記録
    1957-09-04 ~ 1957-09-24
    Summit and east flank
  13. 1954年VEI 2観測記録
    1954-02-16 ~ 1954-02-16
  14. 1950年VEI 3観測記録
    1950-11-21 ~ 1950-12-17
  15. 1949年VEI 2観測記録
    1949-06 ~ 1949-06
  16. 1948年VEI 2観測記録
    1948-03-31 ~ 進行中
  17. 1947年VEI 3観測記録
    1947-07-09 ~ 1947-08-02
    Summit and NE flank
  18. 1929年VEI 2観測記録
    1929-02-10 ~ 1929-03
  19. 1923年VEI 3観測記録
    1923-10-23 ~ 1923-12-11
    Summit and upper north flank
  20. 1919年VEI 2観測記録
    1919-06-20 ~ 1919-06-30
  21. 1914年VEI 2観測記録
    1914-10-28 ~ 1914-11-03
  22. 1899年VEI 2観測記録
    1899-11-22 ~ 1899-11-29
  23. 1867年VEI 2観測記録
    1867-11-14 ~ 1867-11-30
    NE-SW-trending fissure
  24. 1850年VEI 2観測記録
    1850-04-13 ~ 1850-05-27

外部リンク

⚠ 参考情報です。緊急対応には使用しないでください。