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बेसिक इंग्लिश का दूसरा सत्र (कक्षा प्रारंभ : 22 अक्तूबर, शाम 3:30 से 5:30)
Ocean-Wide Tsunami Mock Drill
Sep 23, 2016

India recently took part in a major Indian Ocean-wide tsunami mock drill during which thousands of people were evacuated from coastal areas in over half a dozen states and warning and detection systems will be put to test.

Salient Features

  • The massive exercise, in which 23 other Indian Ocean nations were participated, involved evacuation of around 35,000 people from the coastal communities mostly in Odisha and also in Andaman & Nicobar Islands, Andhra Pradesh, Tamil Nadu, West Bengal, Kerala, Gujarat and Goa.
  • The end-to-end warning systems—from tsunami detection and forecast, threat evaluation and alert formulation, dissemination to public and their awareness and responses—were put to test during the mock drill.
  • 'IOWave16' was organised by the Intergovernmental Oceanographic Commission (IOC) of the UNESCO, which coordinated the setting up of Indian Ocean Tsunami Warning and Mitigation System (IOTWMS) in the aftermath of the December 26, 2004 tsunami.
  • The Indian Tsunami Early Warning Centre (ITEWC), based out of the Indian National Centre for Ocean Information Services (INCOIS) is capable of detecting tsunamigenic earthquakes within 10 minutes of their occurrence and issue timely advisories to disaster management officials as well as to the vulnerable communities.
  • This state-of-the-art warning centre, operational since October 2007, has all necessary computational & communication infrastructure for the reception of real-time data from seismic & sea-level networks as well as generation and dissemination of tsunami bulletins for the entire Indian Ocean region.
  • IOWave16 comprised two scenarios: the first was simulated an earthquake with a magnitude of 9.2 south off Sumatra, Indonesia, and the second was simulated an earthquake with a magnitude of 9 in the Makran Trench south of Iran and Pakistan. Both were conducted in real time lasting for about 12 hours and ITEWC issued 15 tsunami bulletins to both national and regional stakeholders through GTS (global telecommunication system), email, fax, SMS as well as web.
  • The major objectives of IOWave16 included testing the efficiency of communication links, disaster management offices and local communities at risk.
  • The drill facilitated exercising the standard operating procedures of emergency services and evaluating their state of readiness to handle tsunami-like emergency situations. Most importantly, IOWave16 enhanced the awareness and preparedness among all stakeholders, including the vulnerable communities.

Eever since ITEWC became operational in 2007, about 37 undersea earthquakes with magnitude of above 6.5 had been recorded in the Indian Ocean. While technically, all the events could have generated tsunamis, ITEWC, through computational modelling, avoided false alarms. It issued warning to evacuate people in three islands in Andaman and Nicobar only once when a large undersea temblor of magnitude 8.7 occurred in April 2012.

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