What kind of volcano is 箱根山?

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

How is seismicity near 箱根山 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

日本→

Volcano 箱根山

東京から100 km足らずの所にあるカルデラで、温泉街に囲まれ、芦ノ湖を抱いています。火山の湯でゆでた卵が黒くなる大涌谷は約3,000年前の噴火で生まれました。2015年にはここで小規模な水蒸気噴火が起き、噴火警戒レベルが引き上げられて数か月にわたり立ち入りが規制されました。

Last Eruption

2015

Erupted since 2000

Summit Elevation

1.4 km

複合火山 · 安山岩 / 玄武岩質安山岩

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.

時刻	マグニチュード	震央・場所	距離	震源の深さ
15d 前	M2.3	59 km SW of Hachiōji (Japan)	4.1 km	0 km
29d 前	M3.4	NEAR S. COAST OF HONSHU, JAPAN (JMA)	31 km	40 km
29d 前	M3.4	神奈川県西部, Japan	31 km	40 km

Geological & Tectonic Profile

複合火山

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

Edifice Type複合火山

Major Rock安山岩 / 玄武岩質安山岩

Tectonic Setting沈み込み帯

Volcanic Arc伊豆火山弧

Volcanic Dossier

VN #283020

Official catalogue parameters, coordinates, elevation and geotectonic classification.

国日本

火口の座標35.233°, 139.021°

Summit Elevation1.4 km

Subregion伊豆火山弧

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 →

地域地震プロファイル

東京・関東平野

Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for 東京・関東平野.

地域ハブを開く

よくあるご質問（FAQ）

検証済みの科学的・運用面・緊急対応プロトコル

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

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