Kurose Hole

Caldera in Japan

Key Facts

Elevation

-114 m (-374 ft)

Type

Caldera

Location

33.400°, 139.680°

Region

Izu Volcanic Arc

Rock Type

Dacite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

Kurose Hole, between Mikura and Hachijo-jima islands, is a nearly circular submarine caldera 5-7 km in diameter with a 600-760 m deep floor. The high point of the caldera rim rises to about 100 m of the ocean surface. Large amounts of dacitic pumice have been recovered from dredges along the inner caldera wall.

The age of its most recent eruption is not known.

Volcanic Hazards & Risk Assessment

Primary Hazards

Pyroclastic flows and surges
Large explosive eruptions (VEI 4+)
Ash fall and tephra deposits
Lahars and debris flows

Risk Level

Population at RiskHigh

Infrastructure RiskModerate

Aviation RiskSignificant

Geological Composition & Structure

Rock Types

Primary

Dacite

Silica Content

Varied composition

Tectonic Setting

Subduction zone

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

Age & Formation

Epoch

Holocene

Evidence

Evidence Uncertain

Eruption Statistics & Analysis

Metric	Value	Global Ranking	Significance
Total Recorded Eruptions	Unknown	Low	Moderately active volcano
Maximum VEI	VEI Unknown	Minor	Local impact potential
Recent Activity	Unknown	Historical	Historically 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.