11:00 AM - 1:00 PM
[HDS12-P02] Questionnaire survey for residents on long-term evaluation of active faults and evaluation of ground motion
Keywords:active fault, long-term evaluation, evaluations of ground motion, risk
Regarding earthquakes occuring on active faults, the Headquarters for Earthquake Research Promotion (hereafter, HQ) has evaluated the long-term earthquake occurrence potentials and published the evaluations of strong ground motion.
Since the frequency of earthquakes on active faults is very low and the quantity and quality of information obtained from active fault surveys are limited, long-term evaluation of active faults has large uncertainty. Therefore, when disseminating long-term evaluations of active faults and evaluation of strong ground motion to the residents as earthquake risk information, it is necessary to consider the appropriate content and transmission method from various viewpoints. The viewpoints are such as scientific validity, understanding and utilization of information in disaster prevention administration, and understanding of local residents who receive the information.
HQ conducted a survey for the general public regarding the published results (Ministry of Education, Culture, Sports, Science and Technology, 2011-2019). However, the perception of local residents regarding the evaluation results of individual active faults has not been investigated.
Therefore, in this study, we focused on the active fault zones in and around the Nobi Plain, and conducted a questionnaire survey on the published results for local residents.
We asked them about the information they wanted to know about the earthquake and the degree of understanding of the information published by the Earthquake Headquarters. The results suggest that they are most concerned about possible damage in their area of residence and that currently published information may cause some difficulty in understanding the potential for damage. By providing information that connects earthquake motion and damage in addition to the currently published information, the understanding of local residents can be promoted. In addition, it became clear that there is a need for information that is not generally shown at present (damage that does not occur in the residential area (eg, there is no possibility of a tsunami), reliability of private earthquake prediction information). Moreover, there were differences in the response tendencies depending on the attributes (age, gender) in some questions, and it is desirable to conduct a follow-up survey focusing on the differences in lifestyles associated with the attributes as a future task.
Since the frequency of earthquakes on active faults is very low and the quantity and quality of information obtained from active fault surveys are limited, long-term evaluation of active faults has large uncertainty. Therefore, when disseminating long-term evaluations of active faults and evaluation of strong ground motion to the residents as earthquake risk information, it is necessary to consider the appropriate content and transmission method from various viewpoints. The viewpoints are such as scientific validity, understanding and utilization of information in disaster prevention administration, and understanding of local residents who receive the information.
HQ conducted a survey for the general public regarding the published results (Ministry of Education, Culture, Sports, Science and Technology, 2011-2019). However, the perception of local residents regarding the evaluation results of individual active faults has not been investigated.
Therefore, in this study, we focused on the active fault zones in and around the Nobi Plain, and conducted a questionnaire survey on the published results for local residents.
We asked them about the information they wanted to know about the earthquake and the degree of understanding of the information published by the Earthquake Headquarters. The results suggest that they are most concerned about possible damage in their area of residence and that currently published information may cause some difficulty in understanding the potential for damage. By providing information that connects earthquake motion and damage in addition to the currently published information, the understanding of local residents can be promoted. In addition, it became clear that there is a need for information that is not generally shown at present (damage that does not occur in the residential area (eg, there is no possibility of a tsunami), reliability of private earthquake prediction information). Moreover, there were differences in the response tendencies depending on the attributes (age, gender) in some questions, and it is desirable to conduct a follow-up survey focusing on the differences in lifestyles associated with the attributes as a future task.