What kind of volcano is Hakone?

Hakone is classified as a Complex in Japan. Its tectonic setting is Subduction zone / Continental crust (> 25 km).

How is seismicity near Hakone monitored here?

Earthquakes within 50 km of the crater are aggregated from 18 seismic networks and checked against a swarm rule that compares the current rate with this volcano's own 30-day background. Ash advisories come from the VAAC centres that are connected.

Steaming fumaroles of Owakudani valley in the Hakone caldera, Japan

Photo:Lee Siebertvia Smithsonian GVP

Volcano Dossier•GVP #283020

35.23°N, 139.02°E

Erupted since 2000

Japon→

Volcano Hakone

Une caldeira à moins de 100 km de Tokyo, cernée de villes thermales et abritant le lac Ashi. Sa vallée fumante d'Owakudani, où les œufs cuits dans les sources volcaniques deviennent noirs, est née d'une éruption il y a environ 3 000 ans ; en 2015, une petite explosion de vapeur y a fait relever le niveau d'alerte et fermer la vallée pendant des mois.

Last Eruption

2015

Erupted since 2000

Summit Elevation

1.4 km

Complexe volcanique · Andésite / Andésite basaltique

Seismic State

Normal Baseline

0 events (1.0x rate)

Interactive Volcano & Seismicity Map

Seismicity within 50 km radius, active VAAC ash plumes, and tectonic plate boundaries.

Recent seismicity within 50 km

0 events in the last 12 h within 25 km of the crater.

Heure	Magnitude	Épicentre / lieu	Distance	Profondeur
15d il y a	M2.3	59 km SW of Hachiōji (Japan)	4.1 km	0 km
29d il y a	M3.4	NEAR S. COAST OF HONSHU, JAPAN (JMA)	31 km	40 km
29d il y a	M3.4	神奈川県西部, Japan	31 km	40 km

Geological & Tectonic Profile

Complexe volcanique

Hakone is an active Complex formed in an active Subduction zone / Continental crust (> 25 km). Dominant lithology: Andesite / Basaltic Andesite.

Edifice TypeComplexe volcanique

Major RockAndésite / Andésite basaltique

Tectonic SettingZone de subduction

Volcanic ArcArc volcanique Izu

Volcanic Dossier

VN #283020

Official catalogue parameters, coordinates, elevation and geotectonic classification.

PaysJapon

Coordonnées du cratère35.233°, 139.021°

Summit Elevation1.4 km

SubregionArc volcanique Izu

Catalog SourceSmithsonian GVP (#283020)

Authoritative Monitoring Infrastructure

All 18 Networks & VAAC →

Seismic ObservatoryJMA

Japan Meteorological Agency (Volcano Observation)

Official Portal

ICAO Aviation Ash Center

Tokyo VAAC (JMA)

Tokyo, Japan

VAAC Advisory Desk

Swarm telemetry correlated across 18 networks against a 30-day baseline.Read Science & Physics →

Profil sismique régional

Tokyo et plaine du Kantō

Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for Tokyo et plaine du Kantō.

Ouvrir le pôle régional

Questions fréquentes (FAQ)

Protocoles scientifiques, opérationnels et d’urgence vérifiés

The most recent eruption of Hakone recorded by the Smithsonian Global Volcanism Program was in 2015.

Catalogue: Smithsonian Institution, Global Volcanism Program.Smithsonian GVP profile