Read and plot ASC or [miniSeed, xml pair] or [fullSeed, xml pair] files . The code can also be used to view free field instrument records available on the AFAD site in Turkey. US seismic instruments use V2 or V2c formats, see separate repo at https://github.com/Githbhatia/Streamlit_ReadV2. Python code reads a zip file containing ASC or [miniSeed, xml pair] or [fullSeed, xml pair] files that contains three channels (Free-Field instruments have 3 channels).

This is a derivative of the Streamlit ReadV2 application posted as separate application.

3/17/2025 Absolute trigger for autoranging was failing for earthquake records that have very low accelerations - revised for a dyanmic trigger based on 1/10 maximum absolute value.

3/29/2025 Added new file name scheme used by USGS in records from the Burma Earthquake.

3/30/2025 Changed the way v2C files read, added error catching if file names dont match standards.

4/4/2025 Changed ADRS spectra to be a vertical arrangement rather than horizontal to avoid titles overlapping. Also implemented a logspace interval for spectra.

5/26/2025 Added ROTD50 spectra and associated ASI computation (with polar gragh plotted against azimuth angles).

5/30/2025 Added Arais Intensity Computation. Added SI and DSI computation.

6/1/2025 Animation of displacements in 3D added.

6/27/2025 ASC, miniSEED and fullSEED option for file input added - sample files included in repo.

6/28/2025 - corrected units - obspy works in m/s^2 !!

Try out at https://freefieldseismicviewer-5n9hjoluis8fcmy4d7d3wh.streamlit.app/