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North Gorda Ridge Vulkan

Aktualisiert: 4. Okt. 2022 10:04 GMT -
Submarine volcano -3000 m / - 9,842 ft
Northeastern Pacific Ocean, 42.67°N / -126.78°W
Aktueller Status: normal / ruhend (1 von 5)

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Typische Aktivität: unspecified
Ausbrüche des North Gorda Ridge: 1996

Letzte Erdbeben in der Nähe

No recent earthquakes

Beschreibung

The northernmost of five segments of the Gorda Ridge lies immediately south of the Blanco Transform Fault that offsets the Gorda and Juan de Fuca oceanic spreading ridges. The 65-km-long North Gorda Ridge segment is located about 200 km west of the southern Oregon coast and has deep 5- 10-km-wide valleys at either ends with a shallower narrow axial valley at the center. This morphology, which in plan view resembles an hourglass, is typical of magmatically active spreading segments. A submarine lava flow was erupted in late February and early March 1996, near the center of the North Gorda Ridge segment. The eruption was initially detected through acoustic T-waves from a seismic swarm and the emission of large thermal plumes. In April submarine cameras revealed new lava flows about 100-200 m wide along a fissure that was at least 3.5 km long. A seismic swarm of uncertain origin also occurred at this location in January 1998.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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