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Niseko

Stratovolcano(es) in Japan

Last Eruption: -4900

Key Facts

Elevation

1,308 m (4,291 ft)

Type

Stratovolcano(es)

Location

42.875°, 140.659°

Region

Northeast Japan Volcanic Arc

Rock Type

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

The Niseko volcano group in SW Hokkaido contains a cluster of andesitic stratovolcanoes and lava domes that extends 25 km E-W and 15 km N-S. The volcanic complex is located NW of Niseko City. The latest dated activity was a phreatic to magmatic eruption about 7000 years ago.

Fumarolic areas and hot springs are found at various locations.

Volcanic Hazards & Risk Assessment

Primary Hazards

    Risk Level

    Population at RiskHigh
    Infrastructure RiskModerate
    Aviation RiskSignificant

    Geological Composition & Structure

    Rock Types

    Primary
    Andesite / Basaltic Andesite
    Silica Content
    Intermediate (57-63% SiO₂)

    Tectonic Setting

    Subduction zone
    Formed by oceanic plate subduction, typically producing explosive eruptions due to water-rich magmas.

    Age & Formation

    Epoch
    Holocene
    Evidence
    Eruption Dated

    Eruption Statistics & Analysis

    MetricValueGlobal RankingSignificance
    Total Recorded EruptionsUnknownLowModerately active volcano
    Maximum VEIVEI UnknownMinorLocal impact potential
    Recent Activity6926 years agoHistoricalHistorically active

    Monitoring & Alert Status

    Monitoring Networks

    Japan Meteorological Agency (JMA)
    Real-time seismic monitoring
    Geological Survey of Japan
    Geochemical monitoring
    Global Volcanism Program
    International eruption database

    Current Status

    Normal
    No recent activity. Routine monitoring continues.

    Nearby Volcanoes in Northwestern Pacific Volcanic Regions

    Regional Volcanic Activity
    The Northwestern 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: 285031
    • Evidence: Eruption Dated
    • Epoch: Holocene

    About the Photo

    Several peaks of the Niseko volcano complex are seen in this view looking W from the Chisenupuri summit. From front to back are the forested Nitonupuri, light-colored, flat-topped Iwaonupuri, and Niseko-Annupuri. Yotei volcano is visible in the distance to the right of Niseko-Annupuri.

    Photo by Yutaka Kodama, 1995 (Hokkaido University).

    Basic Information

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