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Table of Contents
1. Scope .............................................................................................................................................. 1
2. Relevant Documents and Definition of Terms .......................................................................... 2
2.1. Applicable Documents .......................................................................................................... 2
2.2. Reference Documents .......................................................................................................... 2
2.3. Abbreviations .......................................................................................................................... 3
3. Signal Specifications .................................................................................................................... 4
4. Message Specifications ............................................................................................................... 5
4.1. L1S ........................................................................................................................................... 5
4.1.1. Message Configuration ................................................................................................. 5
4.1.1.1. Overview ................................................................................................................... 5
4.1.1.2. Timing ........................................................................................................................ 5
4.1.1.3. Cyclic Redundancy Check (CRC) ........................................................................ 5
4.1.1.4. DC Report Classification and Transmission Rate ............................................. 6
4.1.2. Message Contents ......................................................................................................... 8
4.1.2.1. Overview ................................................................................................................... 8
4.1.2.2. Common Section ..................................................................................................... 8
4.1.2.3. Message Type 43: DC Report (JMA Disaster Prevention Information) ......... 9
4.1.2.3.1. Overview ............................................................................................................ 9
4.1.2.3.2. JMA-DC Report (Earthquake Early Warning) ........................................... 12
4.1.2.3.3. JMA-DC Report (Hypocenter) ..................................................................... 23
4.1.2.3.4. JMA-DC Report (Seismic Intensity) ............................................................ 27
4.1.2.3.5. JMA-DC Report (Nankai Trough Earthquake) .......................................... 31
4.1.2.3.6. JMA-DC Report (Tsunami) ........................................................................... 34
4.1.2.3.7. JMA-DC Report (Northwest Pacific Tsunami) ........................................... 43
4.1.2.3.8. JMA-DC Report (Volcano) ............................................................................ 51
4.1.2.3.9. JMA-DC Report (Ash Fall) ........................................................................... 76
4.1.2.3.10. JMA-DC Report (Weather) ......................................................................... 79
4.1.2.3.11. JMA-DC Report (Flood) .............................................................................. 86
4.1.2.3.12. JMA-DC Report (Typhoon) ........................................................................ 97
4.1.2.3.13. JMA-DC Report (Marine) .......................................................................... 102
4.1.2.4. Message Type 44: DC Report (Other Organization) ..................................... 106
4.2. SNS Posted Message ....................................................................................................... 109
4.2.1. Outline .......................................................................................................................... 109
4.2.2. Disaster types to be posted on SNS (Twitter) ....................................................... 109
4.3. DC Report message output from a receiver ................................................................. 112
4.3.1. Sentence format ......................................................................................................... 112