What kind of volcano is 草津白根山?

草津白根山 is classified as a Stratovolcano(es) in Japan. Its tectonic setting is Subduction zone / Continental crust (> 25 km).

How is seismicity near 草津白根山 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.

日本东京与关东平原

Turquoise acidic crater lake Yugama on Kusatsu-Shirane volcano, Japan

Photo:Lee Siebertvia Smithsonian GVP

Volcano Dossier•GVP #283120

36.62°N, 138.53°E

Erupted since 2000

日本→

Volcano 草津白根山

在日本著名的草津温泉上方，坐落着碧绿色的火山口湖“汤釜”，它是地球上酸性最强的湖泊之一。2018年1月，被认为已沉寂数千年的本白根山在一处滑雪场上方毫无预警地喷发，碎石砸向缆车和正在山坡上训练的士兵，造成1人死亡、11人受伤。

Last Eruption

2018

Erupted since 2000

Summit Elevation

2.2 km

复合成层火山 · 安山岩 / 玄武安山岩

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.

No catalogued earthquakes within 50 km in the last 90 days.

Geological & Tectonic Profile

复合成层火山

草津白根山 is an active Stratovolcano(es) formed in an active Subduction zone / Continental crust (> 25 km). Dominant lithology: Andesite / Basaltic Andesite.

Edifice Type复合成层火山

Major Rock安山岩 / 玄武安山岩

Tectonic Setting俯冲带

Volcanic Arc东北日本火山弧

Volcanic Dossier

VN #283120

Official catalogue parameters, coordinates, elevation and geotectonic classification.

国家日本

火山口坐标36.618°, 138.528°

Summit Elevation2.2 km

Subregion东北日本火山弧

Catalog SourceSmithsonian GVP (#283120)

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 →

区域地震特征档案

东京与关东平原

Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for 东京与关东平原.

打开区域监控中心

常见问题（FAQ）

经过验证的科学、运行与应急规程

The most recent eruption of 草津白根山 recorded by the Smithsonian Global Volcanism Program was in 2018.

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