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evo-seismic-phase-picking

Runs SeisBench pretrained PhaseNet model on ObsPy Streams to detect P and S wave arrivals, extracts pick indices, and writes results to CSV.

tasks-evolved/seismic-phase-picking/environment/skills/evo-seismic-phase-picking/SKILL.md

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Sep 10, 2026
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# evo-seismic-phase-picking

## Overview
Runs SeisBench PhaseNet model inference on preprocessed ObsPy Streams to detect P and S wave arrivals. Extracts pick indices mapped to original sample coordinates and writes CSV output.

## Key Knowledge
- Use PhaseNet with "stead" weights for best generalization
- P_threshold=0.3, S_threshold=0.3 for good recall
- model.classify() handles sliding windows automatically
- Convert pick times back to original array indices using UTCDateTime math
- Output CSV: file_name, phase, pick_idx

## Usage
```python