An earthquake of moderate intensity hit Andaman Islands yesterday afternoon.
- The earthquake measured 5.4 on the Richter scale. Its epicentre was at latitude 10.8 degrees north. The depth of the earthquake was measured as 10.
- Andaman and Nicobar Islands is a seismically active region as it is located in a subduction zone where the Indian Plate is going underneath the Burmese Plate.
- Andaman Islands fall under Zone V which is the most seismically active region.
Earthquake Prone Zones:
- Bureau of Indian Standards, based on the past seismic history, has grouped the country into four seismic zones, viz. Zone-II, -III, -IV and –V. Of these, Zone V is the most seismically active region, while zone II is the least.
- Seismic Zone Intensity on Modified Mercalli (MM) intensity scale associated with various zone is as follows:
II (Low intensity zone) VI (or less)
III (Moderate intensity zone) VII
IV (Severe intensity zone) VIII
V (Very severe intensity zone) IX (and above)
- entire northeastern India,
- parts of Jammu and Kashmir,
- Himachal Pradesh,
- Rann of Kutch in Gujarat,
- parts of North Bihar and
- Andaman & Nicobar Islands.
Zone-IV covers remaining parts of
Zone-III comprises of
- Lakshadweep islands, and
- remaining parts of Uttar Pradesh,
- Gujarat and
- West Bengal,
- parts of Punjab,
- Madhya Pradesh,
- Andhra Pradesh,
- Tamilnadu and
- Zone-II covers remaining parts of the country.