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evo-geospatial-earthquake-distance

Parse USGS earthquake GeoJSON, spatially filter earthquakes within a tectonic plate, compute projected distances to plate boundaries using EPSG:3832, and output the furthest earthquake as formatted JSON.

tasks-evolved/earthquake-plate-calculation/environment/skills/evo-geospatial-earthquake-distance/SKILL.md

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Sep 10, 2026
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Apache-2.0

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# evo-geospatial-earthquake-distance

Complete pipeline for finding the earthquake furthest from a tectonic plate boundary within the plate.

## Key Concepts

### USGS GeoJSON Format
- Root: FeatureCollection with `features` array
- Each feature: `id` (string), `properties` (mag, place, time in ms epoch), `geometry` (Point with [lon, lat, depth])
- Time is milliseconds since Unix epoch, convert with `pd.to_datetime(ms, unit='ms', utc=True)`
- ISO 8601 format: `strftime('%Y-%m-%dT%H:%M:%SZ')`

### Pipeline Steps
1. Parse earthquakes, store original lat/lon, shift geometry to 0-360