obsgo

README

obsgo

A seismic library implemented in pure Go.

Modules

• signal: detrending, tapers, IIR filters, FFT, explicitly separated ObsPy FFT Hilbert and OregonDSP centered-FIR Hilbert transforms, differentiation/integration, vector operations, and instrument-response removal using inventory metadata or SAC pole-zero responses.
• waveform: Seismogram/Trace/Stream data models, segment continuity and object-level signal operations. The waveform/mseed, waveform/sac, and waveform/ascii packages provide waveform IO adapters.
• trigger: STA/LTA characteristic functions, Z-detector, CarlSTA trigger, and trigger onset detection.
• inventory: format-neutral station metadata plus seiscomp and stationxml codecs. Use inventory.Transcode or TranscodeBytes to convert between the two formats.

Import the module that owns the required functionality, for example:

import (
	"github.com/bclswl0827/obsgo/signal"
	"github.com/bclswl0827/obsgo/trigger"
)

Examples

The runnable examples are under examples/ and are executed from the repository root:

• peak_ground_motion_example: remove instrument response and calculate three-component PGA, PGV, and PGD.
• sta_lta_trigger_example: band-pass filtering and recursive STA/LTA.
• waveform_processing_example: Trace-level preprocessing and filtering.
• spectral_analysis_example: spectrum, periodogram PSD, and Welch PSD.
• rotation_polarization_example: ZNE/ZRT rotation and polarization.
• waveform_io_example: MiniSEED, ASCII, and SAC round trips.