5.3 M Earthquake in Western Waters of Aceh Not Trigger Tsunami Sunday, January 27, 2019

  • 2019.01.28 Monday
  • 17:57


EMR Communication Team




NUMBER: 0077.Pers / 04 / SJI / 2019

Date: January 27, 2019


5.3 M Earthquake in Western Waters of Aceh Not Trigger Tsunami

An earthquake with a magnitude of 5.3 M shocked Aceh's western waters on Sunday (27/1) at 11:36 WIB. The epicenter of the earthquake was at a depth of 10 km, located 180 km Southwest of Simeulue District, Aceh.


The Head of the Volcanology and Geological Disaster Mitigation Center (PVMBG), Geologi Agency, Ministry of Energy and Mineral Resources (ESDM) Kasbani explained that the earthquake that did not cause a tsunami, because the energy is not strong enough to cause deformation under the sea.


Kasbani continued that the geological conditions around the epicenter were composed of sedimentary rocks, tertiary-aged carbonate rocks, and pre-tertiary rocks.


"Some of these rocks have been weathered. Rocks that have undergone weathering are decomposed, loose, not yet compact so that they can strengthen the effects of earthquake shocks," Kasbani added.

Based on the PVMBG analysis, Kasbani said that earthquakes centered on the Indo-Australian oceanic plate outside the subduction zone are thought to occur due to reactivation of faults caused by the oceanic lithosphere approaching the subduction zone and bending into the deep sea trench. The community is encouraged to remain calm and follow directions and information from local BPBD officers. "People should not be provoked by irresponsible issues regarding the earthquake and tsunami and remain vigilant about the occurrence of aftershocks," he concluded. (sk)


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