御嶽山の火山性地震、21日は296回観測　微動はなし

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Post on Jan 24, 2025

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Mount Ontake Volcanic Earthquakes Surge: 296 Tremors Recorded on October 21st

Mount Ontake, a volcano infamous for its 2014 eruption, is showing renewed seismic activity. The Japan Meteorological Agency (JMA) reported a significant increase in volcanic earthquakes on October 21st, 2023, with a total of 296 tremors detected. This surge in activity is prompting close monitoring and renewed caution for those in the surrounding areas. While this number is concerning, it's crucial to understand the context and avoid unnecessary alarm.

Key Findings from the JMA Report:

• 296 Volcanic Earthquakes: The JMA's October 21st report registered a substantial increase in volcanic earthquakes originating from Mount Ontake.
• Absence of Volcanic Tremor: Importantly, no volcanic tremor was detected alongside the increased earthquake activity. Volcanic tremor, a continuous signal indicating magma movement, is often a more significant precursor to an eruption.
• Ongoing Monitoring: The JMA continues to closely monitor Mount Ontake's seismic activity and gas emissions for any further changes.
• Alert Level Remains Unchanged: At the time of this report, the JMA's alert level for Mount Ontake remains unchanged. However, residents and visitors are advised to remain vigilant and follow official advisories.

Understanding the Significance of Volcanic Earthquakes at Mount Ontake

Volcanic earthquakes are a common phenomenon at active volcanoes like Mount Ontake. They are caused by the movement of magma, gases, or hydrothermal fluids beneath the surface. While an increase in earthquake frequency can indicate increased volcanic activity, it doesn't automatically predict an eruption. The absence of volcanic tremor in this instance is a reassuring factor.

What to do if you're near Mount Ontake:

• Stay informed: Regularly check the JMA website and official news sources for updates on Mount Ontake's activity.
• Follow advisories: Heed any warnings or evacuation orders issued by local authorities.
• Be prepared: Familiarize yourself with emergency procedures and have an emergency kit ready.

Mount Ontake: A History of Volcanic Activity

Mount Ontake, located in central Japan, has a history of volcanic eruptions. The devastating 2014 eruption tragically resulted in numerous casualties and highlighted the unpredictable nature of volcanic activity. This recent increase in seismic activity serves as a reminder of the importance of continued monitoring and preparedness.

The Importance of Accurate Reporting and Avoiding Misinformation

It's vital to rely on official sources like the JMA for accurate information regarding Mount Ontake's volcanic activity. Social media and unofficial channels can sometimes spread misinformation, leading to unnecessary panic. Staying informed through trusted news outlets and government agencies is crucial.

Stay tuned for further updates on Mount Ontake's seismic activity. We will continue to monitor the situation and provide timely reports as they become available. For the latest information, visit the Japan Meteorological Agency website. (Insert JMA website link here)