### Disaster Early Warning Analysis: Earthquake and COVID-19
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#### **1. Earthquake Early Warning Analysis**
**Source of Information:**
- **Seismographs:** Stations that monitor seismic waves to detect earthquakes.
- **US Geological Survey (USGS):** Provides real-time earthquake data and alerts.
- **Local Emergency Management Agencies:** Disseminates alerts through community-based systems.
**Preparedness Action Required:**
- **Public