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M7.9 Cocos Islands Earthquake, 2000


18 June 2000


SSW of South Island


14:44:13 UTC (21:14:13 CIST)


13.798 S (ISC)


97.424 E (ISC)


10 kms (ISC)


Mw 7.9 (HRV), 7.7 (NEIC)

Additional Info

Map Disclaimer

A major earthquake struck the Indian Ocean sea floor near the Australian Cocos (Keeling) Islands on 18 June 2000 at 21:14 PM local time. It had a magnitude of Mw=7.9 and despite its size, it did not generate an ocean-wide tsunami. A small local tsunami was, however, recorded on the Cocos Islands.

The earthquake was centred 188 kilometres SSW of South Island (Cocos Islands), Australia,
229 kilometres SSW of North Keeling Island (Cocos Islands), Australia,
973 kilometres WSW of The Settlement (Christmas Island), Australia,
1232 kilometres SSW of Bengkulu (Sumatra), Indonesia,
1333 kilometres SW of Jakarta (Java), Indonesia,
1836 kilometres S of Changi International Airport, Singapore,

2756 kilometres NW of Perth (Western Australia), Australia.

This earthquake is one of the strongest mid-plate (intra plate) earthquakes in the Indian Ocean and came within days of a similar sized inter-plate earthquake near Sumatra, Indonesia. No ocean-wide tsunami was generated by this earthquake although a small local tsunami with a run-up of 27-centimetres was recorded on the Cocos Islands.This earthquake was strongly felt at Bantam and other places in the Cocos Islands for close to 45-seconds. The only reported damage were a few fallen trees and coconuts as well as the loss of water tank covers that were displaced by the shaking. Mild tremors were also felt as far as Bengkulu, Jakarta and Padang in Indonesia and in parts of the island state of Singapore.

Harvard Centroid Moment Tensor Solution (HRV), Harvard, USA.
02) International Seismological Centre (ISC), Berkshire.
National Earthquake Information Centre (NEIC), Golden, USA.
Macroseismic information has been compiled by the ASC from reports by local media and local NGO personnel.

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Page Updated: 21 Feb 2008 | Website Disclaimer

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