Explanations:Tsunamis are large ocean waves that can cause significant damage to coastal areas. They are typically caused by underwater disturbances such as earthquakes, landslides, or volcanic eruptions. The severity of tsunami impacts on coastal areas depends on several factors, including the geographical location, the presence of tectonic plate boundaries, and historical data on tsunami occurrences.
Andhra Pradesh and the Andaman and Nicobar Islands are particularly vulnerable to tsunamis due to their geographical location. The Andaman and Nicobar Islands are located in the Bay of Bengal, which is a region known for its tectonic activity. The presence of the Indian Ocean tectonic plate boundary in this area increases the likelihood of underwater disturbances that can trigger tsunamis. Similarly, parts of Andhra Pradesh, which are also located in the Bay of Bengal, are at risk due to their proximity to these tectonic boundaries.
Historical data supports the vulnerability of these regions. For example, the 2004 Indian Ocean tsunami caused significant damage to the Andaman and Nicobar Islands, resulting in loss of life and infrastructure. This event underscores the need for preparedness and mitigation strategies in these areas.
Other coastal areas such as Kollam in Kerala, Madhura in Tamil Nadu, Lakshadweep, and Kanyakumari are also coastal regions, but they are not as severely affected by tsunamis. Kollam, for instance, is located on the Arabian Sea coast, which is less prone to tsunamis compared to the Bay of Bengal. Madhura is not a recognized coastal area and does not have historical data indicating severe tsunami impacts. Lakshadweep and Kanyakumari, while coastal, are not as vulnerable as the Andaman and Nicobar Islands and parts of Andhra Pradesh due to their geographical location and historical data.
In summary, the correct answer is Andhra Pradesh and the Andaman and Nicobar Islands because these regions are located in high-risk zones for tsunamis due to their proximity to tectonic plate boundaries and historical data on tsunami impacts. Understanding the geographical and geological factors that contribute to tsunami vulnerability is crucial for assessing the risk and developing appropriate mitigation strategies.