Earthquake Response
Major earthquakes cause cascading infrastructure failures within minutes: power out, cell towers down, roads blocked. A pre-deployed mesh network provides an immediate communication layer requiring no external infrastructure to function.
The critical first 72 hours
Emergency management doctrine focuses heavily on the first 72 hours post-earthquake as the window when mesh communications are most valuable:
- Cell towers typically restore within 24–72 hours for most users, but coverage is severely reduced
- Landlines may be out for days to weeks in heavily damaged areas
- Internet is intermittent; most social media platforms are unreliable in the first hours due to server load
- A pre-deployed mesh network with solar power and no internet dependency provides communications throughout this window
Infrastructure resilience by node type
| Node type | Expected resilience | Key vulnerability |
|---|---|---|
| Ground-level portable (T-Echo, T1000-E) | High — battery-powered, no infrastructure dependency | Battery depletion after 7–14 days without recharge |
| Building rooftop (solar) | High if solar intact and antenna survived shaking | Antenna damage from building movement; chimney/parapet collapse |
| Hilltop (solar, remote) | Very high — rarely near structural damage | Snow/debris on panel; equipment theft in post-disaster chaos |
| Building-powered (mains only) | Low — loses power immediately | Grid outage (add UPS for short-term backup) |
Neighborhood resilience net design
A "neighborhood net" approach that works well for earthquake-prone communities:
- One "net anchor" per neighborhood: A solar-powered repeater on the highest accessible residential rooftop, battery-backed for 7+ days autonomy.
- Block captains with personal nodes: Each block captain has a device pre-configured for the neighborhood channel. 5–10 devices within range of the anchor.
- Welfare check protocol: Pre-established check-in schedule (e.g., every 8 hours). Any block captain who misses check-in triggers a welfare check by neighbors.
- Resource messaging format: Simple standard format: "[LOCATION] STATUS: [OK/NEED HELP] INJURIES: [none/n] DAMAGE: [minor/moderate/severe]"
- Community coordination center connection: The neighborhood net connects to a city-wide mesh via the anchor repeater — aggregate status flows up to emergency operations.
Pre-event preparedness steps
- Deploy solar-powered anchor repeaters before an earthquake, not during response
- Distribute personal nodes to all neighborhood net participants
- Conduct quarterly check-in tests to verify devices are charged and configured
- Store node charging cables in emergency kits alongside device
- Document the channel/preset configuration in printed form, stored with the device — don't rely on memory under stress
- Coordinate with local CERT or ARES team so mesh participants know how to integrate with larger response structure
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