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East Gakkel Ridge at 85 E

East Gakkel Ridge at 85°E

열극 분화구 · Undersea Features · 3800m (해저)

Detailed bathymetry of the East Gakkel Ridge at 85°E in the Arctic Ocean. The inset map shows the location of the 85°E segment (yellow star) along the Gakkel Ridge (red line). The main panel shows illuminated color bathymetry (30-m grid spacing) of the 85°E segment acquired during the AGAVE expedition. The axial valley contains large numbers of distinctive, cratered volcanoes, including a cone on a fault terrace of the northern valley wall. Named features include two volcanic ridges in the center of the axial valley (Jessica’s Hill and Duque’s Hill), and three cratered volcanoes along a ridge-parallel fissure to the south (Oden, Thor, and Loke). The bathymetry data were plotted with Generic Mapping Tools.
Detailed bathymetry of the East Gakkel Ridge at 85°E in the Arctic Ocean. The inset map shows the location of the 85°E segment (yellow star) along the Gakkel Ridge (red line). The main panel shows illuminated color bathymetry (30-m grid spacing) of the 85°E segment acquired during the AGAVE expedition. The axial valley contains large numbers of distinctive, cratered volcanoes, including a cone on a fault terrace of the northern valley wall. Named features include two volcanic ridges in the center of the axial valley (Jessica’s Hill and Duque’s Hill), and three cratered volcanoes along a ridge-parallel fissure to the south (Oden, Thor, and Loke). The bathymetry data were plotted with Generic Mapping Tools. · 사진: Sohn et al., 2008. Explosive volcanism on the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature, v. 453, p. 1236-1238.
화산 유형
열극 분화구
국가
Undersea Features
지역
Atlantic Ocean Volcanic Regions / Arctic Ridge Volcanic Province
해발
3800m (해저)
좌표
85.608, 85.250
마지막 분화
1999년
판구조 환경
Rift zone / Oceanic crust (< 15 km)
화산 지형
Cluster
주요 암석
No Data (checked)
지질학적 요약

During January-September 1999 global seismic networks detected an earthquake swarm along the East Gakkel Ridge (near 86°N, 85°E). Sonar mapping in May 1999 identified a cone at the western end of a line of volcanoes that corresponded to the average location of the epicenters (Edwards et al., 2001). A survey in July 2007 (Sohn et al., 2008) provided detailed bathymetry and named selected features, including the Oden (location of the 1999 seismicity), Thor, and Loke cones. Both Oden and Loke were covered with a light dusting of pyroclastic material, which was also found throughout the survey area, thought to be products of an eruption during the 1999 swarm.

분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
1999~1999 · 1건 · 최고 VEI 219991999200020002000

상세 타임라인

  1. 1999년VEI 2관측 기록
    1999-04-05 ~ 1999-04-15
    East Gakkel Ridge

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