Society
4.8 magnitude aftershock jolts Christchurch
Updated: 2011-03-05 16:30
(Xinhua)
CHRISTCHURCH, New Zealand - A 4.5 magnitude earthquake struck New Zealand South Island city of Christchurch on Saturday evening.
The aftershock, which occurred at 7:34 pm local time (0634 GMT), was centered 10 km east of Christchurch and at a depth of 6.4 km.
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The second biggest aftershock on Saturday struck at 10:49 am and measured 4.1 on the Richter scale. It was centered 10 km west of Lyttelton at a depth of 5 km.
There have been more than nine aftershocks in Christchurch on Saturday, ending an aftershock-free period of 14 hours.
The ground has been shaking much of Saturday.
All the aftershocks on Saturday before 8 pm were centered between 10 and 20 km from Lyttelton at depths ranging from 2 to 6 km.
In chronological order, their magnitudes have been 3.2 (at 12: 52 am), 3.4 (at 6:14 am), 3.3 (10:04 am), 4.1 (10:49 am), 3.2 (11:17 am), 3.4 (1:19 pm), 3.5 (2:29 pm) and 4.5 (7:34 pm).
A 6.3 magnitude earthquake struck Christchurch on Feb 22, with the official death toll standing at 165 on Friday.
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