Usage

Download velocity structure files

Run download.sh in the JMA2001 directory.

For 1 day

python3 src/main.py --format example.in --date 100101

For 1 time window

python3 src/main.py --format example.in --date 100101 --time_window 0

For days, months, years

./run.sh

You can run in parallel. Change -j option of "parallel" command.

Plot

python3 src/main.py --format example.in --date 100101 --time_window 0 --mode plot

Specify the data for the calculation

Change format option.

Requirements

Python libraries

• NumPy
• SciPy
• ObsPy
• tqdm
• matplotlib, Basemap (optional; for plotting data)

Linux commands

• parallel

Changes from the paper

• Use the 50% confidence interval as the source location error instead of the standard deviation.
• Use "SLSQP" non-linear optimization algorithm instead of "CCSA".

Reference

Mizuno, N., & Ide, S. (2019). Development of a modified envelope correlation method based on maximum-likelihood method and application to detecting and locating deep tectonic tremors in western Japan. Earth, Planets and Space, 71(1), 40.