Q4A · Explain in detail the role of GIS in effective Disaster management for Landslides.

Answer

For landslide management, GIS provides a common location-based picture for agencies. Data quality, access, update time and field verification determine its usefulness.

Swipe across the diagram to read its labels ↔

Diagram: GIS combines location-based layers for decisions. Labels: GIS combines location-based layers for decisions | GIS combines location-based layers for decisions | Hazard layer | Flood extent / slope / drought | Exposure layer | People, homes, roads, hospitals | Resources layer | Shelters, teams, water supply | Decision supported | Which places face danger? Who needs | assistance? Which route is usable? Where | should resources go? | Check data dates, accuracy and field reports; a map is decision support.

1. Mitigation. Combine slope, geology, drainage, land cover and past failures to map susceptibility and guide development controls.
2. Preparedness. Map rainfall thresholds, monitoring points, settlements and safe routes; practise road closures and evacuation.
3. Response. Update slide extent and blocked roads; identify isolated communities and safe team access using verified reports.
4. Recovery. Assess damaged land and infrastructure, select safer reconstruction sites and monitor slope stabilisation and drainage repairs.

Remote sensing can update affected-area mapping, but weather, resolution, signal availability and processing time may limit observations. Protect sensitive household and health information when sharing maps.