Disasters and Disaster Management – Sendai Framework, Floods, Cyclones, etc.

India launches ‘Operation Samudra Maitri’ to help tsunami-hit IndonesiaPriority 1


Mains Paper 3: Environment | Conservation, environmental pollution and degradation, environmental impact assessment

From UPSC perspective, the following things are important:

Prelims level: Op Samudra Maitri, Causes of the Tsunami

Mains level:  India’s HADR operations.


Operation Samudra Maitri

  1. India has launched a massive operation for humanitarian assistance to provide assistance to the earthquake and tsunami victims in Indonesia.
  2. It dispatched two aircraft and three naval ships carrying relief material to the country.
  3. The C-130J aircraft is carrying a medical team along with tents and equipments to set up a field hospital.
  4. The C-17 aircraft is carrying medicines, generators, tents and water to provide immediate assistance.
  5. Three Indian Navy ships — INS Tir, INS Sujatha and INS Shardul — have also been mobilised to carry out humanitarian assistance and disaster relief (HADR).


What Caused Indonesia Tsunami?

  1. A chain of geological events set off by the violent quake liquefied the loose soil and possibly caused an underwater landslide, triggering a tsunami wave that may have been intensified by the shape of the bay.
  2. The quake was likely caused by movement of the Palu-Koro fault which runs almost north to south down Sulawesi on a line through Palu’s narrow bay.

  1. The Palu-Koro is a strike-slip fault, where the two sides slide past each other horizontally, unlike a thrust fault which pushes one side over the other.
  2. A thrust quake is more likely to trigger a tsunami because its vertical motion pushes a column of seawater upwards, setting a wave in motion.

  1. The fault usually shifts by 30 to 40 mm a year, with the western side heading south while the eastern edge moves north.
  2. The shaky nature of this particular quake has triggered the liquefaction, by agitating the water to such an extent that mud bubbled up from underground, weakening foundations, and uprooting trees.

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