Question

Mention any two sources of data for the development of a hazard map.

Hint:

To predict a disaster area, you need to look at what the ground looks like today (Satellite Imagery) and what happened to it in the past (Historical records).

Answer 1

Step 1: Concept
Hazard maps are specialized thematic maps that highlight geographical areas vulnerable to natural disasters like floods, earthquakes, or landslides.

Step 2: Meaning
To predict and map where future disasters might strike, GIS analysts must gather specific historical and physical data about the land.

Step 3: Analysis

• Satellite Imagery Aerial Photography: Provides a visual, up-to-date assessment of the current landscape, land use, and infrastructure locations.
• Digital Elevation Models (DEMs): Topographic data is critical for understanding slope stability (for landslides) or drainage basins (for floods).
• Historical Disaster Records: Past data regarding where floods or fault lines have previously ruptured is essential for predicting future risk zones.

Step 4: Conclusion
Satellite imagery and historical records serve as primary foundational data sets for hazard modeling. Final Answer: 1. Satellite Imagery, 2. Historical disaster records.