We carry out experiments to grasp the movement of climbers as well as an experiment to share the disaster situation with related organizations in real time, at Nasudake in 2020 and Ontakesan in 2022. In the experiments, small beacons are distributed to many climbers, and their movements are detected by receivers installed on mountain trails in advance. We build an online viewer to visualize the monitoring results on a web map in real time, and share them with the related organizations, and exchange opinions with them about the use of the acquired data for disaster prevention. Based on the results of the experiments, we consider how to solve problems related to volcanic disaster prevention. It is shown that the systems used in the experiments leads to solutions to problems related to volcanic disaster prevention during not only disasters but also normal times, such as updating drills and revising evacuation plans.

1. [1] Ministry of the Environment, “About the number of climbers of Fujisan in the summer of 2022,” Annual Report, Ministry of the Environment, 2022 (in Japanese).
2. [2] K. Yamaoka, “The 2014 Eruption of Mt. Ontake,” J. JSNDS, Vol.33, No.4, pp. 339-346, 2015 (in Japanese).
3. [3] T. Oikawa, M. Yoshimoto, S. Nakada, F. Maeno, J. Komori, T. Shimano, Y. Takeshita, Y. Ishizuka, and Y. Ishimine, “Reconstruction of the 2014 eruption sequence of Ontake Volcano from recorded images and interviews,” Earth, Planets and Space, Vol.68, Article No.79, 2016. https://doi.org/10.1186/s40623-016-0458-5
4. [4] T. Saito, H. Yamamoto, T. Sano, and N. Doi, “Establishment of Climber Safety Measures to Temporarily Relax the Climbing Ban on Mt. Iwate,” J. JSNDS, Vol.22, No.1, pp. 59-74, 2003 (in Japanese).
5. [5] D. K. Bird, G. Gisladottir, and D. Dominey-Howes, “Volcanic risk and tourism in southern Iceland: Implications for hazard, risk and emergency response education and training,” J. of Volcanology and Geothermal Research, Vol.189, Nos.1-2, pp. 33-48, 2010. https://doi.org/10.1016/j.jvolgeores.2009.09.020
6. [6] D. Sasaki, Y. Jibiki, and T. Ohkura, “Tourists’ behavior for volcanic disaster risk reduction: A case study of Mount Aso in Japan,” Int. J. of Disaster Risk Reduction, Vol.78, Article No.103142, 2022. https://doi.org/10.1016/j.ijdrr.2022.103142
7. [7] The Shinanomainichi Shimbun, “Verification of 2014 Mt. Ontake Eruption – Living with Volcanoes –,” The Shinanomainichi Shimbun Co. Ltd., 2015 (in Japanese).
8. [8] H. Kanasugi, G. Matsubara, R. Shibasaki, S. Sugita, and H. Fukui, “Study on Measurement method of Mountain Climber Movements for Grasping Climbing Behaviors,” Theory and Applications of GIS, Vol.25, No.2, pp. 57-62, 2017 (in Japanese). https://doi.org/10.5638/thagis.25.57
9. [9] K. Mantzios, A. Pappas, G.-L. Tsianos, and A. D. Flouris, “Night-Time Heart Rate Variability During an Expedition to Mt. Everest: A Case Report,” Sports, Vol.11, No.2, Article No.48, 2023. https://doi.org/10.3390/sports11020048
10. [10] Y. Tanaka, R. Kamada, K. Takeshima, and T. Kato, “Development of Tsunami Evacuation Drill System by Behavior Monitoring Using BLE Beacon,” Institute of Social Safety Science, No.39, pp. 61-71, 2021 (in Japanese). https://doi.org/10.11314/jisss.39.61
11. [11] Y. Tanaka, “Introduction of IoT-based safe climbing measures at Mt. Fuji,” IPEJ J., No.636, pp. 20-23, 2019 (in Japanese).
12. [12] Y. Kohno, Y. Miyagi, and I. Iwai, “Exposure Assessment to Volcanic Hazards Related to 35 Volcanoes in Japan Using Volcanic Hazard Maps,” Technical Note of the National Research Institute for Earth Science and Disaster Resilience, Vol.483, pp. 1-16, 2022 (in Japanese). https://doi.org/10.24732/NIED.00003912
13. [13] Y. Usuda, T. Matsui, H. Deguchi, T. Hori, and S. Suzuki, “The shared information platform for disaster management – The research and development regarding technologies for utilization of disaster information –,” J. Disaster Res., Vol.14, No.2, pp. 279-291, 2019. https://doi.org/10.20965/jdr.2019.p0279