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Central Bismarck Sea

Fissure vent in Papua New Guinea

Last Eruption: 1972

Key Facts

Elevation

-1,300 m (-4,265 ft)

Type

Fissure vent

Location

-3.030°, 147.780°

Region

Bismarck Sea Volcanic Province

Rock Type

No Data (checked)

Tectonic Setting

Rift zone

Location

Loading map...

Overview

SOFAR signals resembling those produced at known submarine eruptions were recorded in January 1972 in the central Bismarck Sea (Johnson et al. , 1981). The source of the signals was at the junction of two segments of the N margin of the South Bismarck plate.

The more easterly of these segments is a transform fault, whereas the more westerly is an area of oblique active seafloor spreading. The signals were detected by a seismic station on nearby Manus Island, as well as at hydrophone stations on Wake and Midway Islands in the central Pacific.

Volcanic Hazards & Risk Assessment

Primary Hazards

    Risk Level

    Population at RiskModerate
    Infrastructure RiskHigh
    Aviation RiskSignificant

    Geological Composition & Structure

    Rock Types

    Primary
    No Data (checked)
    Silica Content
    Varied composition

    Tectonic Setting

    Rift zone
    Continental rift or intraplate setting with varied eruptive styles.

    Age & Formation

    Epoch
    Holocene
    Evidence
    Eruption Dated

    Eruption Statistics & Analysis

    MetricValueGlobal RankingSignificance
    Total Recorded EruptionsUnknownLowModerately active volcano
    Maximum VEIVEI UnknownMinorLocal impact potential
    Recent Activity54 years agoHistoricalRecently active

    Monitoring & Alert Status

    Monitoring Networks

    Global Volcanism Program
    International eruption database

    Current Status

    Normal
    No recent activity. Routine monitoring continues.

    Nearby Volcanoes in Southwestern Pacific Volcanic Regions

    Regional Volcanic Activity
    The Southwestern Pacific Volcanic Regions contains multiple active volcanic systems. Cross-regional magma interactions and tectonic stresses can influence eruption patterns across the entire arc. Monitor regional seismic activity and volcanic alerts.

    Quick Info

    • Smithsonian ID: 250030
    • Evidence: Eruption Dated
    • Epoch: Holocene

    Basic Information

    This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.