5:15 PM - 7:15 PM
[SVC32-P31] A method for evaluating the resolution of deformation monitoring networks in and around active volcanoes
Keywords:volcano deformation, crustal deformation, ground deformation, The Headquarters for Volcano Research Promotion, fundamental observation network, V-net
The Headquarters for Volcano Research Promotion was established within the Ministry of Education, Culture, Sports, Science and Technology on April 1, 2025.
The secretariat of the Headquarters has prototyped benchmark tool that quantitatively evaluates and visualizes the resolution of deformation based on the distribution of multi-parameter monitoring networks in order to systematic and efficient deployment, maintenance, operation, update, and advancement of observation networks.
The benchmark tool consists of (1) monitoring configuration, (2) analysis configuration, (3) virtual data generation, and (4) source estimation and resolution evaluation. The outline of each function is as follows.
(1) Monitoring Configuration
Site information, observation information, reading error level, grid settings for estimating sources, detection threshold, and number of iterations are read from the list or configuration file.
(2) Analysis Configuration
Selection of the deformation source type (a Mogi model or a tensile fault), monitoring network combination, and observation items (all, GNSS only, tilt only, etc.) interactively.
(3) Virtual Observation Data Generation
Calculation of theoretical deformation assuming that the source located at each grid (evaluation point), and errors are generated using normal random numbers for each iteration to create as virtual observation reading.
(4) Source Estimation and Resolution Evaluation
Estimation of deformation source and evaluation of the detection level under conditions that satisfy AIC and detection threshold for source location.
The prototyped tool supports continuous observations such as tiltmeter, strain meter, and GNSS, as well as repeated observations such as GNSS, leveling and EDM.
We will introduce evaluation results on several volcanoes as examples.
The secretariat of the Headquarters has prototyped benchmark tool that quantitatively evaluates and visualizes the resolution of deformation based on the distribution of multi-parameter monitoring networks in order to systematic and efficient deployment, maintenance, operation, update, and advancement of observation networks.
The benchmark tool consists of (1) monitoring configuration, (2) analysis configuration, (3) virtual data generation, and (4) source estimation and resolution evaluation. The outline of each function is as follows.
(1) Monitoring Configuration
Site information, observation information, reading error level, grid settings for estimating sources, detection threshold, and number of iterations are read from the list or configuration file.
(2) Analysis Configuration
Selection of the deformation source type (a Mogi model or a tensile fault), monitoring network combination, and observation items (all, GNSS only, tilt only, etc.) interactively.
(3) Virtual Observation Data Generation
Calculation of theoretical deformation assuming that the source located at each grid (evaluation point), and errors are generated using normal random numbers for each iteration to create as virtual observation reading.
(4) Source Estimation and Resolution Evaluation
Estimation of deformation source and evaluation of the detection level under conditions that satisfy AIC and detection threshold for source location.
The prototyped tool supports continuous observations such as tiltmeter, strain meter, and GNSS, as well as repeated observations such as GNSS, leveling and EDM.
We will introduce evaluation results on several volcanoes as examples.