Disaster Management and Skill/Map-Based Application
Disaster Management and Skill/Map-Based Application tests practical judgement: can you classify a hazard, place it in the disaster cycle, and read a map accurately? It is the section where precise vocabulary earns marks quickly.
Disaster cycle and institutions
- A disaster is a serious disruption exceeding a community's capacity to cope, usually triggered by a hazard.
- Natural hazards include earthquakes, floods, drought, cyclones, landslides and heat waves; man-made ones include industrial accidents, fires and road accidents.
- The cycle runs through mitigation (long-term reduction of risk), preparedness (readiness, drills, warnings), response (rescue and relief) and recovery–reconstruction.
- The Disaster Management Act, 2005 created the NDMA, with SDMAs at state and DDMAs at district level.
Rajasthan hazards
- Drought is the dominant hazard in the west; floods affect eastern districts and the Chambal belt; heat waves are increasingly deadly.
- Much of Rajasthan lies in seismic Zones II and III, so earthquake-resistant construction and retrofitting matter.
- Local response rules: during an earthquake, drop–cover–hold indoors and stay away from buildings outdoors; during a flood, move to higher ground and avoid crossing running water.
Map skills
- Scale converts map distance to ground distance; conventional signs show roads, railways and settlements; contours show relief, with closely spaced lines meaning steep slopes.
- Latitude and longitude fix location; eastings and northings give grid references.
Worked example
A map has a scale of 1 cm = 10 km. Two towns are 4.5 cm apart. What is the ground distance? Reasoning: multiply map distance by scale value - 4.5 × 10 = 45 km. If the scale were given as a representative fraction, convert both sides to the same unit before multiplying.
Traps that cost marks
- Confusing mitigation with preparedness; both matter, but mitigation changes long-term risk.
- Reversing the scale conversion or ignoring unit changes.
- Treating every hazard as a disaster; a hazard becomes a disaster only when it overwhelms capacity.
- Giving generic answers instead of naming the hazard and the safe action.