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Ahyi

Stratovolkan · United States · 55 m (bawah laut)

Ahyi submarine volcano is seen in a bathymetric view looking from the NE with 2x vertical exaggeration. It rises to within about 150 m of the sea surface about 18 km SE of the island of Farallon de Pajaros (Uracas) in the northern Marianas. Water discoloration has been observed over the volcano and an explosive eruption was seismically detected in April 2001.
Ahyi submarine volcano is seen in a bathymetric view looking from the NE with 2x vertical exaggeration. It rises to within about 150 m of the sea surface about 18 km SE of the island of Farallon de Pajaros (Uracas) in the northern Marianas. Water discoloration has been observed over the volcano and an explosive eruption was seismically detected in April 2001. · Foto: Image courtesy of Susan Merle (Oregon State University/NOAA Vents Program).
Tipe
Stratovolkan
Negara
United States
Wilayah
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Ketinggian
55 m (bawah laut)
Koordinat
20.437, 145.030
Letusan terakhir
2026
Kondisi tektonik
Subduction zone / Crustal thickness unknown
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Ahyi seamount is a large conical submarine volcano ~18 km SE of the island of Farallon de Pajaros in the northern Marianas. Water discoloration has been observed there, and in 1979 the crew of a fishing boat felt shocks over the summit area, followed by upwelling of sulfur-bearing water. On 24-25 April 2001 an explosive eruption was detected seismically by a station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+/- 15 km) at a location near the southern base of Ahyi. An eruption in April-May 2014 was detected by NOAA divers, hydroacoustic sensors, and seismic stations.

Ringkasan Wikipedia

Ringkasan Inggris

Ahyi Seamount is an active shallow submarine volcano in the Northern Mariana Islands, in the Northwestern Pacific Ocean. It has erupted 5 times since the year 2000: in 2001, 2014, 2022–23, and twice in 2024. Since 2009, it has been a part of Marianas Trench Marine National Monument of the United States.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1934~1943 · 1 letusan · VEI maks. 11961~1970 · 2 letusan · VEI maks. 01970~1980 · 1 letusan · VEI maks. 01980~1989 · 1 letusan · VEI maks. 01989~1998 · 2 letusan · VEI maks. 01998~2007 · 1 letusan · VEI maks. 02007~2016 · 1 letusan · VEI maks. 22016~2025 · 4 letusan · VEI maks. 119341952198019982016

Garis waktu rinci

  1. 2025VEI ?Teramati
    2025-10-20 – 2026-01-09
  2. 2024VEI 0Teramati
    2024-01-01 – 2024-03-27
  3. 2024VEI 0Teramati
    2024-08-05 – 2025-05-28
  4. 2022VEI 1Teramati
    2022-11-18 – 2023-06-11
  5. 2014VEI 2Teramati
    2014-04-24 – 2014-05-17
    Summit crater and SE slope
  6. 2001VEI 0Teramati
    2001-04-24 – 2001-04-25
    S of Ahyi (20.34 N, 145.02 E)
  7. 1994VEI 0Teramati
    1994-04-23 – Berlangsung
  8. 1989VEI 0Teramati
    1989-09-21 – 1989-12-27
    SW of Ahyi (~20.3 N, 144.9 E)
  9. 1985VEI 0Teramati
    1985-08-02 – 1985-09-05
    SW of Ahyi
  10. 1979VEI 0Teramati
    1979-11-15 – 1979-11-15
    Near the Ahyi summit
  11. 1969VEI 0Teramati
    1969-03-11 – 1969-03-13
    S of Ahyi (20.24 N, 145.02 E)
  12. 1967VEI 0Teramati
    1967-03-27 – 1967-04-10
    SW of Farallon de Pájaros
  13. 1934VEI 1Teramati
    1934-07-15 – Berlangsung
    Vicinity of Farallon de Pájaros

Tautan eksternal

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