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Explainer | Why did Indonesia’s shallow earthquake cause so much destruction?

  • Experts say proximity to fault lines, the depth of the temblor and buildings not being constructed using quake-proof methods were factors in the devastation
  • The shallow 5.6-magnitude earthquake left more than 260 dead and buried several houses in Indonesia’s most populous province of West Java

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A resident salvages belongings from her damaged house after a 5.6 magnitude earthquake in Cianjur, Indonesia, on November 22. Photo: EPA-EFE
A 5.6 magnitude earthquake left more than 260 dead and hundreds injured as buildings crumbled and terrified residents ran for their lives on Indonesia’s main island of Java.
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Bodies continued to be pulled from the debris on Tuesday morning in the hardest-hit city of Cianjur, located in the country’s most densely populated province of West Java and some 217km (135 miles) south of the capital, Jakarta. A number of people are still missing.

While the magnitude would typically be expected to cause light damage to buildings and other structures, experts say proximity to fault lines, the shallowness of the quake and inadequate infrastructure that cannot withstand earthquakes all contributed to the damage.

Here’s a closer look at the earthquake and some reasons why it caused so much devastation:

Was Monday’s earthquake considered “strong”?

The US Geological Survey said the quake late Monday afternoon measured 5.6 magnitude and struck at a depth of 10km (6.2 miles).

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