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M7.9 Cocos Islands
Earthquake, 2000 |
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Date: |
18
June 2000 |
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Epicentre: |
SSW of
South Island |
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Time: |
14:44:13
UTC
(21:14:13
CIST) |
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Latitude: |
13.798 S (ISC) |
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Longitude: |
97.424 E (ISC) |
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Depth: |
10 kms (ISC) |
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Magnitude: |
Mw
7.9 (HRV), 7.7 (NEIC) |
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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. |
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References
01)
Harvard Centroid Moment Tensor Solution (HRV), Harvard, USA.
02) International Seismological Centre (ISC),
Berkshire.
03)
National Earthquake
Information Centre (NEIC), Golden, USA.
04)
Macroseismic information has been compiled by
the ASC from reports by local media and local NGO personnel.
Page Citation
Information on this page may be reproduced in print or
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citation be given to
this website in the form of a link i.e. "www.asc-india.org".
Map Disclaimer
International boundaries
of India (especially Arunachal Pradesh, Jammu & Kashmir, Himachal Pradesh and Uttarakhand) on the
displayed map are from Google Maps. These do not conform to the
external boundaries of India recognized by the Survey of India. That
they are displayed on this page via Google Maps, is only for display purposes and
this should not be misinterpreted as an endorsement
of these boundaries by the Amateur Seismic Centre (ASC). |
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