Iwate volcano eruptions

complex volcano 2041 m / 6,696 ft
Honshu, Japan, 39.85°N / 141°E
Eruption list: 1934 (?), 1919, 1732, (reported 1719 eruption was in 1732), 1689 (?), 1687, 1686
Radiocarbon- & tephrochronology dated: 1450 ± 100, 1300 ± 50, 150 AD (?), 350 BC (?), 450 BC (?), 1150 BC (?), 1250 BC (?), 1500 BC ± 300, 1650 BC (?), 2000 BC (?), 2050 BC ± 200, 2950 BC ± 50, 3050 BC (?), 3250 BC ± 500, 3750 BC ± 100, 4350 BC ± 500, 4450 BC ± 500, 4850 BC ± 50, 4900 BC ± 100, 5650 BC ± 50, 6300 BC ± 100, 6450 BC ± 1000


1998 magma intrusion event

There was no eruption, but from February to September 1998, dike intrusions were observed geodetically and seismologically at Iwate volcano. Magma commenced rising beneath the eastern basaltic cone and later migrated laterally westward.
[more]
Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

More on VolcanoDiscovery

Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.