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아무크타산

Amukta

성층화산 · United States · 1066m

Amukta in the central Aleutians is located along the coast of the 8-km-wide island of the same name. It has had several eruptions since the late 18th century from both summit and flank vents.
Amukta in the central Aleutians is located along the coast of the 8-km-wide island of the same name. It has had several eruptions since the late 18th century from both summit and flank vents. · 사진: Photo by U.S. Fish and Wildlife Service, 1972 (courtesy of Alaska Volcano Observatory). · Wikimedia Commons
화산 유형
성층화산
국가
United States
지역
북아메리카 / Aleutian Ridge Volcanic Arc
해발
1066m
좌표
52.500, -171.252
마지막 분화
1996년
판구조 환경
Subduction zone / Intermediate crust (15-25 km)
화산 지형
Composite
주요 암석
Andesite / Basaltic Andesite
지질학적 요약

The symmetrical Amukta stratovolcano lies in the central Aleutians SW of Chagulak Island and is the westernmost of the Islands of the Four Mountains group. The stratovolcano was constructed at the northern side of an arcuate caldera-like feature that is open to the sea along the southern coast of the 8-km-wide Amukta Island. It overlies a broad shield volcano and is topped by a 400-m-wide crater, and a cinder cone is located near the NE coast. There have been several reported eruptions from both summit and flank vents.

Wikipedia 요약

영어 요약

The undissected stratovolcano of Amukta volcano makes up most of nearly circular, 7.7-km-wide Amukta Island. It is the westernmost of the Islands of Four Mountains chain. The nearest islands to it are Yunaska and Seguam Island; it is separated from Seguam Island by Amukta Pass. The cone, about 5.8 km in basal diameter and topped by a 0.4 km wide summit crater, appears on synthetic-aperture radar imagery to be built upon a 300+ meter high, east-west trending arcuate ridge.

Wikipedia · CC BY-SA · 전체 기사 보기 →

분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
1770~1793 · 2건 · 최고 VEI 31861~1884 · 2건 · 최고 VEI ?1952~1974 · 1건 · 최고 VEI 31974~1997 · 3건 · 최고 VEI 117701815188419291974

상세 타임라인

  1. 1997년VEI 1관측 기록
    1997-03-03 ~ 진행 중
  2. 1996년VEI 1관측 기록
    1996-09-17 ~ 1996-09-18
  3. 1987년VEI 1관측 기록
    1987-09-04 ~ 1987-09-04
  4. 1963년VEI 3관측 기록
    1963-02-13 ~ 진행 중
  5. 1878년VEI ?관측 기록
    1878-07-02 ~ 진행 중
  6. 1876년VEI ?지질학적 추정
    1876-07-02 ~ 진행 중
  7. 1786년VEI 3관측 기록
    1786-06 ~ 1791
  8. 1770년VEI ?지질학적 추정
    1770 ~ 진행 중

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