Moderate quake hits Andaman

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.

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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)

India Earthquake Zone Map

Different zones:

  1. Zone-V comprises ofZONE 5

    1. entire northeastern India,
    2. parts of Jammu and Kashmir,
    3. Himachal Pradesh,
    4. Uttaranchal,
    5. Rann of Kutch in Gujarat,
    6. parts of North Bihar and
    7. Andaman & Nicobar Islands.
  1. Zone-IV covers remaining parts of

    1. ZONE 4Jammu & Kashmir and
    2. Himachal Pradesh,
    3. Union Territory of Delhi,
    4. Sikkim,
    5. northern parts of Uttar Pradesh,
    6. Bihar and
    7. West Bengal,
    8. parts of Gujarat and
    9.  portions of Maharashtra near the west coast
    10. Rajasthan.
  1. Zone-III comprises of

ZONE 3

  1. Kerala,
  2. Goa,
  3. Lakshadweep islands, and
  4. remaining parts of Uttar Pradesh,
  5. Gujarat and
  6. West Bengal,
  7. parts of Punjab,
  8. Rajasthan,
  9. Madhya Pradesh,
  10. Bihar,
  11. Jharkhand,
  12. Chhattisgarh,
  13. Maharashtra,
  14. Orissa,
  15. Andhra Pradesh,
  16. Tamilnadu and
  17. Karnataka.
  1. Zone-II covers remaining parts of the country.

Sources: PIB.

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