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Geographic Information System

Short answer

A GIS captures, stores, analyzes and displays geographically referenced data using layered spatial and attribute data, supporting overlay and buffering. Its uses include disaster management, urban planning, agriculture, environmental monitoring, business site selection, disease mapping, and route optimization.

Discuss the characteristics of a Geographic Information System (GIS). Discuss at least five different uses of GIS for scientific/business purpose.

A Geographic Information System (GIS) is a computer-based system to capture, store, manage, analyse and display data that is linked to locations on the Earth's surface.

Characteristics of GIS

  1. Spatial referencing - every data item has geographic coordinates (latitude, longitude).
  2. Layered data - maps are stored as layers (roads, rivers, land use, population) that can be overlaid.
  3. Two data types - spatial (vector points/lines/polygons, raster images) and attribute (tabular) data linked together.
  4. Spatial analysis - buffering, overlay, proximity, network and route analysis.
  5. Data integration - combines satellite images, GPS, surveys and databases.
  6. Visualisation - produces maps, 3D views and charts.
  7. Query and update - interactive querying of map features; dynamic updating.
  8. Scalable - works from a local village to global scale.

Uses of GIS

  1. Disaster management - mapping flood, landslide and earthquake risk and planning rescue (Nepal earthquake response).
  2. Urban and land-use planning - road, zoning, utility and property mapping.
  3. Agriculture - soil, crop and irrigation mapping, yield prediction.
  4. Environment and forestry - monitoring deforestation, glaciers, wildlife habitat.
  5. Business - site selection for a new shop or branch, market segmentation, delivery route optimisation.
  6. Telecom and utilities - tower coverage, pipeline and power line management.
  7. Health - mapping disease outbreaks.
  8. Transportation - navigation, traffic management, ride sharing.

✓ Answer checked by Claude Opus 5.5 (high effort)

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