USGS Earthquake Risk Analyzer
Free real-time earthquake monitoring and risk analysis from USGS. Search seismic events by location, date range, and magnitude. Returns risk levels, depth data, and seismic activity trend analysis. No API key required.
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
location |
string | ❌ | City, region, or lat,lon coordinates |
radius_km |
integer | ❌ | Search radius from location (default: 100) |
min_magnitude |
float | ❌ | Minimum earthquake magnitude (default: 2.5) |
days_lookback |
integer | ❌ | Historical window (default: 30) |
Example Response
{
"location": "San Francisco, CA",
"search_radius_km": 100,
"period_days": 30,
"events_found": 47,
"largest_event": {
"magnitude": 4.2,
"date": "2024-03-28",
"depth_km": 8.4,
"location": "18km NE of San Jose"
},
"risk_assessment": {
"seismic_zone": "High",
"30day_m5_probability": 0.12,
"nearest_fault": "Hayward Fault (2.3km)"
}
}
Use Cases
- Real estate seismic risk assessment for insurers
- Infrastructure project site selection analysis
- Supply chain disruption risk from seismic events
Access
# x402 endpoint — pay $0.01 USDC per call (Base mainnet)
POST https://x402.ntriq.co.kr/earthquake-risk
# Service catalog
curl https://x402.ntriq.co.kr/services
x402 micropayments — USDC on Base, gasless EIP-3009