"Saigaimap" Releases Composite Disaster Risk Assessment Tool for Kyushu Region - Scores 3 Risks (Earthquake, Flood, Volcano) Instantly by Address Input

Mycat Inc. (Headquarters: Meguro-ku, Tokyo) has newly released a composite disaster risk assessment tool specifically for the Kyushu region on its AI disaster risk score diagnostic service "Saigaimap" (https://saigaimap.xyz).

Tool URL: https://saigaimap.xyz/tools/kyushu-risk-check

Tool Overview

This tool is a web tool that instantly displays diagnostic results as composite disaster risk by simply entering an address in the seven prefectures of Kyushu (Fukuoka, Saga, Nagasaki, Kumamoto, Oita, Miyazaki, Kagoshima) to comprehensively score three disaster risks: earthquakes, floods, and volcanoes. It is equipped with a dedicated diagnostic logic, different from the national version, that corresponds to the geographical characteristics of Kyushu where "multiple disaster risks overlap simultaneously."

Input Items

• Address Input: Enter an address within the seven prefectures of Kyushu (diagnosis is possible at the municipality level; accuracy improves with street number input).
• Building Type Selection (Optional): Detached house / Apartment (low-rise) / Apartment (high-rise) / Office building / Retail store.
• Year Built (Optional): Used to determine the application of seismic standards (Before 1981 / 1982-2000 / 2001 onwards).

Diagnostic Results Output

1. Composite Disaster Risk Overall Score (out of 100 points)

Calculates an overall score integrating the individual risk scores for earthquakes, floods, and volcanoes. The score is displayed in the following 5 levels:

• 80-100 points: Caution Required (Multiple high risks overlap)
• 60-79 points: Attention (One or more high risks present)
• 40-59 points: Slight Caution (Moderate risks present)
• 20-39 points: Low Risk
• 0-19 points: Extremely Low Risk

2. Detailed Scores by Risk Type

Displays individual scores and their basis for each risk.

• Earthquake Risk Score: Determined based on distance from active faults, past earthquake history, and ground motion amplification (surface ground amplification factor). In Kyushu, particular consideration is given to the Futa-gawa/Hinagu Fault Zone (Kumamoto Prefecture), the Kego Fault Zone (Fukuoka Prefecture), and the Beppu-mannen-dake Fault Zone (Oita Prefecture).
• Flood Risk Score: Determined based on distance from rivers, overlap with inundation hazard areas, and past inundation records. The basins of the Chikugo River, Shirakawa River, and Oitagawa River are evaluated with priority.
• Volcanic Risk Score: Determined based on distance from volcanoes, eruption alert levels, and expected ashfall range. Mount Aso (Kumamoto Prefecture), Sakurajima (Kagoshima Prefecture), and Mount Tsurumi/Mount Ganmo (Oita Prefecture) are targeted.

3. Explanation of Kyushu-Specific Risk Factors

Along with the diagnostic results, Kyushu-specific risk factors related to the entered area are displayed.

• Fukuoka City Center: Presence of the Kego Fault Zone, flood risk around Hakata Station.
• Kumamoto City: Proximity to the epicenter of the 2016 Kumamoto Earthquake, flood risk in the Shirakawa River basin.
• Beppu City area, Oita Prefecture: Overlapping risk from the Beppu-mannen-dake Fault Zone and volcanic risk from Mount Tsurumi.
• Kagoshima City: Risk of ashfall due to volcanic eruptions from Sakurajima.

4. Countermeasures Checklist Based on Risk Level

A checklist of high-priority disaster prevention measures is presented based on the diagnostic score.

• If earthquake risk is high: Undergo seismic diagnosis, secure furniture, consider earthquake insurance.
• If flood risk is high: Confirm nearest evacuation sites, prepare sandbags, implement flood prevention measures.
• If volcanic risk is present: Stockpile masks and goggles for ashfall, confirm evacuation routes.

Background on Disaster Risks in Kyushu

Kyushu is a region where multiple natural disaster risks, including earthquakes, heavy rainfall, and volcanic activity, overlap. In the 2016 Kumamoto Earthquake, seismic intensity 7 was observed twice, followed by the Northern Kyushu Heavy Rainfall in 2017, and the heavy rainfall in July 2020 (Reiwa 2)...