Aira (Japan) – Report for 12 August-18 August 2020

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program. Updated by 2300 UTC every Wednesday, these notices are preliminary and subject to change as events are studied in more detail. This is not a comprehensive list of eruptions during the week, but rather a summary of activity that meet selected criteria. Carefully reviewed, detailed reports are published monthly in the Bulletin of the Global Volcanism Network. The World Organization of Volcano Observatories (WOVO) website (http://www.wovo.org/) lists the regional volcano observatories that have the most authoritative data for many of these events.

A new eruption, or volcanic unrest was detected by volcanologists and published by the GVP. The details are summarized in the following message:

JMA reported that very small eruptive events at Minamidake Crater (at Aira Caldera?s Sakurajima volcano) were recorded during 10-17 August. The daily sulfur dioxide emission rate was just over 1,000 tons/day on 13 August. During an overflight on 14 August observers noted that emissions were rising from multiple vents in the crater. The Alert Level remained at 3 (on a 5-level scale).

Source: Japan Meteorological Agency (JMA)

GVP