JMA Unified Earthquake & Volcanic Bulletin — Japan Seismic Intelligence

KBT-JMA-JAPAN-1.0

Core thesis Japan's extraordinary seismicity and volcanism require the world's most sophisticated real-time monitoring and warning infrastructure — and JMA's integrated approach to earthquake early warning, tsunami detection, and volcanic monitoring is the global benchmark for national-scale multi-hazard monitoring.

Primary frameworks

• Japan Seismic Intensity Scale — JMA 0-7 intensity scale and its relationship to ground motion parameters
• Earthquake Early Warning (EEW) System — P-wave detection to S-wave warning delivery in 2-10 seconds
• Tsunami Warning Protocols — magnitude and location thresholds triggering Japan Tsunami Warning System
• Volcanic Alert Level System (Japan) — 1-5 scale from normal to eruption with hazard zone protocols
• Hi-net & K-NET Networks — Japan's high-sensitivity seismic and strong motion recording networks
• Subduction Zone Seismicity Characterization — Nankai, Japan, and Kuril trench seismicity and coupling
• Induced Seismicity in Japan — monitoring protocols for geothermal and industrial seismicity

What this tile gives an agent:

• Interpret JMA intensity reports and EEW performance for Japanese earthquake events
• Apply JMA tsunami warning criteria to evaluate alert appropriateness for subduction zone events
• Access JMA volcanic alert levels and activity reports for all active Japanese volcanoes
• Use JMA catalog data for Japan-specific seismicity rate and hazard analysis
• Apply Hi-net and K-NET strong motion data for ground motion characterization in Japan