Understanding Natural Disasters in India

India faces a variety of natural disasters due to its diverse geographical and climatic conditions. Understanding the vulnerability of different regions to these hazards is crucial. The question asks us to identify the incorrect statements among the given options regarding natural disasters in India.

Let's analyze each statement:

• Statement A: National Flood Commission has identified 40 million hectares area of India as flood prone.

  India is highly vulnerable to floods, with significant areas experiencing inundation almost every year. Reports and official data from various sources, including those based on studies by bodies like the National Flood Commission or related assessments, often cite figures around 40 million hectares as the area susceptible to floods in the country. This figure represents a substantial portion of the total geographical area and agricultural land. Therefore, this statement is generally considered accurate based on available data on flood vulnerability in India.

  Conclusion for Statement A: Correct.

• Statement B: About one-third land area of India is vulnerable to landslide hazard.

  Landslides are a significant natural hazard, especially in the hilly and mountainous regions of India, such as the Himalayas, North-Eastern India, the Western Ghats, and the Eastern Ghats. However, stating that about one-third (approximately 33%) of India's total land area is vulnerable to landslides seems excessively high. While these regions are indeed prone, they do not constitute such a large proportion of the entire country's landmass. Official estimates of landslide-prone areas, while substantial, are typically lower than one-third of the total land area.

  Conclusion for Statement B: WRONG.

• Statement C: Tuticorin lies in greater seismic sensitivity zone as compared to Mumbai and Kolkata.

  India is divided into seismic zones based on the expected intensity of earthquakes. These zones range from Zone II (low risk) to Zone V (very high risk). Let's look at the approximate seismic zoning of the mentioned cities:

  • Tuticorin (Tamil Nadu) is located in Seismic Zone II.
  • Mumbai (Maharashtra) is located in Seismic Zone III.
  • Kolkata (West Bengal) is located in Seismic Zone III.

  Comparing the zones, Seismic Zone III (Mumbai and Kolkata) has moderate risk, while Seismic Zone II (Tuticorin) has low risk. Therefore, Tuticorin lies in a lower seismic sensitivity zone compared to both Mumbai and Kolkata, not greater.

  Conclusion for Statement C: WRONG.

• Statement D: Super cyclone of 26th December 2004 resulted into great loss of life and property in Odisha.

  The event that occurred on 26th December 2004 was a massive earthquake in the Indian Ocean that triggered a devastating Tsunami. This Tsunami caused widespread destruction and loss of life along the coastal areas of several countries bordering the Indian Ocean, including parts of India (Tamil Nadu, Kerala, Andhra Pradesh, Puducherry, and the Andaman and Nicobar Islands). While cyclones are also natural disasters affecting India's coast, the event on 26th December 2004 was primarily a Tsunami, not a Super Cyclone. Also, the impact in Odisha from the 2004 Tsunami was much less severe compared to states further south like Tamil Nadu. Odisha did experience a very severe Super Cyclone in 1999, but that was a different event and date.

  Conclusion for Statement D: WRONG.

Based on the analysis, the statements that are WRONG are B, C, and D.

Identifying the WRONG statements is key to answering this question correctly.

Revision Table: Analysis of Statements on Natural Disasters

The statements identified as WRONG are B, C, and D.

Additional Information on Natural Disasters in India

Understanding the common natural disasters and India's vulnerability profile is essential for disaster preparedness and management. Here is some additional context:

• Flood Prone Areas: Major river basins like the Ganga, Brahmaputra, and their tributaries contribute to large areas being flood-prone, especially in the monsoon season. Coastal regions are also vulnerable to floods caused by cyclones and high tides.
• Landslide Hazards: Areas with steep slopes, fragile geology, and high rainfall are susceptible to landslides. Development activities and deforestation can exacerbate the risk.
• Seismic Zones of India: The Bureau of Indian Standards (BIS) maps India into four seismic zones (Zone II, III, IV, and V). Zone V is the highest risk zone (e.g., parts of North-East India, Kashmir, Uttarakhand), and Zone II is the lowest risk zone (e.g., parts of Peninsular India). Most of the Indo-Gangetic plain and coastal areas fall into Zone III or IV.
• Cyclones and Coastal Vulnerability: India has a long coastline vulnerable to tropical cyclones originating in the Bay of Bengal and the Arabian Sea. States on the East Coast (like Odisha, Andhra Pradesh, Tamil Nadu) and West Coast (like Gujarat, Maharashtra) are particularly exposed.
• Tsunamis: While less frequent, events like the 2004 Indian Ocean Tsunami highlight the vulnerability of India's coastal regions to these massive waves triggered by underwater earthquakes.

Being aware of these vulnerabilities helps in implementing effective disaster mitigation and response strategies across India.