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Q5B · Discuss in detail with neat sketch Disaster Cycle and explain progression of scale co…

2025-05-12 · Semester VI final

Actual older TEE paper · 100 marks · Q1 compulsory; any four of Q2–Q7

Q5B. Discuss in detail with neat sketch Disaster Cycle and explain progression of scale considering any one Disaster. [10 marks]

Answer

Definition. Disaster management is the organised process of preventing or reducing risk, preparing for emergencies, responding to impacts and supporting recovery.

Swipe across the diagram to read its labels ↔
The management cycle continues after recovery
Diagram: The management cycle continues after recovery. Labels: The management cycle continues after recovery | The management cycle continues after recovery | Risk reduction | Prevention and mitigation: avoid risk or | reduce losses. | Preparedness | Plans, warnings, training and resources to | act. | Response | Urgent protection, rescue and essential | assistance. | Recovery | Restore services and livelihoods; rebuild | safer. | Lessons improve the next cycle
The cycle repeats: lessons from recovery must improve prevention and preparedness.
StageMeaningOne clear example
PreventionAvoid a risk where possible.Keep a new school out of an active floodway.
MitigationReduce the severity of losses.Strengthen an existing school against shaking.
PreparednessBuild readiness to act.Prepare evacuation routes and conduct drills.
ResponseTake urgent life-saving action.Rescue trapped people and provide emergency shelter.
RecoveryRestore services and livelihoods.Restore water, power and access to education.
Rehabilitation / reconstructionRestore functioning and rebuild damaged systems more safely.Rebuild homes to appropriate safety standards.

Why some diagrams show four stages

The four-stage cycle uses mitigation → preparedness → response → recovery. Prevention is treated with risk reduction; rehabilitation and reconstruction are included in recovery. The six-stage version separates them for explanation. These activities overlap; response can begin before impact, for example by evacuating after a cyclone warning.

Build Back Better

Recovery should reduce future risk. Rebuilding the same weak house in the same floodway may restore yesterday’s vulnerability. Safer siting, stronger design, accessible services and restored livelihoods improve resilience.

Definition. A response level indicates the capacity needed to manage an event. It is different from a physical magnitude or intensity scale.

Swipe across the diagram to read its labels ↔
Disaster scale: the faculty lecture framework
Diagram: Disaster scale: the faculty lecture framework. Labels: Disaster scale: the faculty lecture framework | Disaster scale: the faculty lecture framework | Level 01 | Own organisation or | community resources contain | the incident. | Level 02 | External help from nearby | authorities is required. | Level 03 | Community or regional | capacity is exceeded; wider | help is needed. | Escalate when needs exceed available capacity. | Separate geographic scale: | Local → district → state → national → international / global | A hypothetical cyclone can affect one community or a much wider area. | These lecture Levels 01–03 are not the official L0–L3 numbering scheme. | Neither scale is a cyclone wind-speed category.
The three capacity levels used in the M1 lecture. The separate geographic scale is shown below.

1. Three levels used in the faculty lecture

Lecture levelMeaningCyclone illustration — a hypothetical escalation
Level 01An organisation, institution or community contains the incident using its own resources.A community shelter deals with limited roof damage and assists its occupants using its trained team and stored supplies.
Level 02The affected organisation or community needs external help from nearby authorities.Damage exceeds that team’s resources, so nearby fire, medical and local-authority services provide additional help.
Level 03The event exceeds the community or regional capacity and requires district / provincial or wider assistance.Several affected communities need coordinated district/state evacuation, shelter, transport and specialist support.

2. Geographic / administrative scale

Local → district → state → national → international / global. These describe how widely an event affects people and which territorial levels become involved. For a cyclone, one settlement may be affected locally, several settlements across a district may require district coordination, and several districts or states may require wider support. International assistance is an additional possibility when requested and needed, not an automatic final stage of every disaster.

3. Why numbering conventions must not be mixed

Indian disaster plans also use an L0–L3 planning convention: L0 is normal preparedness; L1 can be handled at district level; L2 requires state assistance; L3 requires national assistance when state and district capacity is exceeded. This is a different definition of the numbers from the lecture’s organisation/community-based Levels 01–03 above. For this course’s “disaster scale” answer, explain the lecture framework first. If a question explicitly gives the official planning convention, use that convention throughout.

4. Significance of the scale

  1. Recognise unmet needs: compare actual damage and urgent requirements with available people, equipment and supplies.
  2. Escalate early: request outside help before local services are overwhelmed.
  3. Assign coordination: identify which agencies must cooperate and who will communicate decisions.
  4. Allocate resources: send rescue teams, transport, shelters and medical support where the gap is greatest.
  5. Review as conditions change: a cyclone’s scale can grow or reduce as impacts and capacity change. Wind speed alone does not determine the response level.