The M 6.5 August 16, 2013 earthquake in the south of Blenheim, New Zealand, occurred as the result of strike-slip faulting on or near the plate boundary between the Pacific and Australia plates. At the latitude of this event, the Pacific plate moves towards the WSW with respect to Australia at the rate of approximately 41 mm/yr.
Preliminary faulting mechanisms for the earthquake in concert with the location and faulting mechanisms of the larger aftershocks suggest that it is related to NE-SW right-lateral strike-slip motion, whcih is consistent with the plate motion oriented displacements.
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