Japan Geoscience Union Meeting 2024

Presentation information

[J] Oral

O (Public ) » Public

[O-05] Stationary linear rain band: its generation mechanism, prediction and disaster mitigation

Sun. May 26, 2024 10:45 AM - 12:15 PM Exhibition Hall Special Setting (1) (Exhibition Hall 6, Makuhari Messe)

convener:Koji Sassa(Natural Science Cluster, Kochi University), Akira Wada(Tokyo Institute of Technology), Takahiro Sayama(Kyoto University), Yoshinori MIYACHI(Geological Survey of Japan, AIST), Chairperson:Akira Wada(Tokyo Institute of Technology), MASAKO YONEDA(Tokyo Institute of technology)


11:25 AM - 11:45 AM

[O05-06] Effects of the Extent of Evacuation Information on Evacuation Intentions

★Invited Papers

*U Hiroi1 (1.The University of Tokyo)

Keywords:Evacuation Information, questionnaire survey

When a liner rain band occurs, the risk of a heavy rainfall disaster can increase dramatically. For this reason, the Japan Meteorological Agency issues a warning about half a day before heavy rainfall is predicted to occur in a liner rain band. And, when the risk of heavy rainfall disasters increases rapidly, the Japan Meteorological Agency releases a weather advisory for significant heavy rainfall. At this time, residents in hazardous areas where disasters are expected to occur need to take appropriate evacuation actions by referring to the evacuation information released by the municipalities.
However, it is difficult to achieve both accuracy, speed, and detail in the release of evacuation information. In particular, given the difficulty of accurately predicting liner rain band, it is even more important to issue appropriate evacuation information according to the situation in order to reduce the number of victims.
This paper focuses on the "detailedness" of the scope of evacuation information. At 9:35 a.m. on July 3, 2019, Kagoshima City announced an evacuation order for 594,943 people throughout the city. However, the number of people who actually evacuated at that time was less than 3,500, and the evacuation rate was about 0.6%. Is it really right to issue evacuation information for the entire city? In general, it is difficult to make residents feel a sense of crisis when evacuation information is issued for such as the whole area. In this study, we consider how residents' evacuation intentions change depending on the way the evacuation information is called for.