4:15 PM - 4:30 PM
[SVC27-09] Development of Volcanic Hazards Information System for volcanic disaster prevention and mitigation
Keywords:hazard, volcano, disaster prevention, digitization, tephra fall
The Geological Survey of Japan, AIST, has been promoting the new "High-Precision Digital Geological Information Improvement Project for Disaster Prevention" project since 2022. Volcanic Craters DB, High-resolution Active Faults, Slope Disaster Risk Assessment, Digital Marine Geology, and Digital Transformation (DX) of various geological information projects are developing in this project. The outline of the Volcanic Hazards Information System project, part of the DX of geoinformation project, is introduced.
A real-time volcanic hazard assessment system is helpful because the eruption site, eruption type, scale, and distribution products are usually changed according to the sequence of the volcanic eruptions. GIS data of tephra fall, PDC, and debris avalanche distributions are necessary for volcanic hazard assessment. An online tephra fall volume estimation system is expected to assess volcanic hazards and risk quantitatively. Volcanic Hazards Information System project is developed for (1) real-time hazard assessment using online numerical simulations, (2) eruption parameter analysis at various volcanoes, (3) digitization of tephra fall, PDC, and debris avalanche distributions, (4) online tephra fall volume estimation, (5) display volcanic crater distributions, and (6) relation to various volcano databases.
The Volcanic Hazards Information System allows it to execute Energy Cone, Titan2D, and Tephra 2 numerical simulations on Quaternary volcanoes worldwide using ASTER GDEM and GSI 10 m DEM (Figure). The Volcanic Hazard Information System has API functions to display simulation results on other servers and GIS software. Therefore, quasi-real-time volcanic hazard assessment is possible using a more rapid display and comparison with previous eruption cases. The examples of eruption parameters at major volcanoes help compare with eruptions in the past and other volcano cases. The examples of eruption parameters are essential for numerical simulations even after eruption initiation to determine the appropriate parameters, hazards and risk assessment, and future prediction of eruption scenarios. Currently, 138 cases of the Energy Cone model, 62 cases of the Tephra2 model, and 50 cases of the Titan 2D model, 250 cases in total, are shown on the system (Feb. 10, 2024). The distribution of craters at Mount Fuji is displayed on the system. The API using WMS (web mapping service) provides all simulation results and allows them to be displayed on various servers, GIS software (e.g., QGIS), and Google Maps.
The online tephra fall volume estimation system is developed using the segment integration method (Takarada et al., 2001, 2016), exponential method (Pyle, 1989), Power Law method (Bonadonna and Houghton, 2005), and Weibull method (Bonadonna and Costa, 2012). The areas of each contour are calculated, and the volume of each segment is estimated using several approximation lines.
Volcanic Hazards Information System, GIS data, and online tephra fall volume estimation system are expected to be used by many stakeholders, such as researchers in volcanology, Cabinet Office, JMA, Volcano Disaster Prevention Council members, students, and Geopark staff members for volcanic hazards assessment, eruption scenario, evacuation plan, revision of volcanic disaster prevention map, and education purposes.
A real-time volcanic hazard assessment system is helpful because the eruption site, eruption type, scale, and distribution products are usually changed according to the sequence of the volcanic eruptions. GIS data of tephra fall, PDC, and debris avalanche distributions are necessary for volcanic hazard assessment. An online tephra fall volume estimation system is expected to assess volcanic hazards and risk quantitatively. Volcanic Hazards Information System project is developed for (1) real-time hazard assessment using online numerical simulations, (2) eruption parameter analysis at various volcanoes, (3) digitization of tephra fall, PDC, and debris avalanche distributions, (4) online tephra fall volume estimation, (5) display volcanic crater distributions, and (6) relation to various volcano databases.
The Volcanic Hazards Information System allows it to execute Energy Cone, Titan2D, and Tephra 2 numerical simulations on Quaternary volcanoes worldwide using ASTER GDEM and GSI 10 m DEM (Figure). The Volcanic Hazard Information System has API functions to display simulation results on other servers and GIS software. Therefore, quasi-real-time volcanic hazard assessment is possible using a more rapid display and comparison with previous eruption cases. The examples of eruption parameters at major volcanoes help compare with eruptions in the past and other volcano cases. The examples of eruption parameters are essential for numerical simulations even after eruption initiation to determine the appropriate parameters, hazards and risk assessment, and future prediction of eruption scenarios. Currently, 138 cases of the Energy Cone model, 62 cases of the Tephra2 model, and 50 cases of the Titan 2D model, 250 cases in total, are shown on the system (Feb. 10, 2024). The distribution of craters at Mount Fuji is displayed on the system. The API using WMS (web mapping service) provides all simulation results and allows them to be displayed on various servers, GIS software (e.g., QGIS), and Google Maps.
The online tephra fall volume estimation system is developed using the segment integration method (Takarada et al., 2001, 2016), exponential method (Pyle, 1989), Power Law method (Bonadonna and Houghton, 2005), and Weibull method (Bonadonna and Costa, 2012). The areas of each contour are calculated, and the volume of each segment is estimated using several approximation lines.
Volcanic Hazards Information System, GIS data, and online tephra fall volume estimation system are expected to be used by many stakeholders, such as researchers in volcanology, Cabinet Office, JMA, Volcano Disaster Prevention Council members, students, and Geopark staff members for volcanic hazards assessment, eruption scenario, evacuation plan, revision of volcanic disaster prevention map, and education purposes.