Strong Quake, Southern Kermadecs

A strong earthquake struck the southern Kermadec Islands early this morning.

Tuesday 19th February 2013

A magnitude 6.1 earthquake struck 111 km north-east of L’Esperance Rock in the southern Kermadec Islands at 1:19 this morning, according to the U.S. Geological Survey (USGS). The undersea quake, centred 898 km north-east of Whangarei, was 34 km deep.

Geoscience Australia reports the quake as magnitude 6.0 at a depth of 34 km.

GeoNet has not reported the event.

A magnitude 5.6 aftershock struck at 5:33 this morning. The USGS reports that this event was centred 108 km north-east of L’Esperance Rock at a depth of 84 km. Geoscience Australia reports the event as magnitude 5.8 at a depth of 35 km.

GeoNet seismograph network 19 February 2013

[Click image to expand] The aftershock left a clear trace on the national seismograph network but has not been reported by GeoNet.

GeoNet's Te Kaha seismograph drum 19 February 2013

[Click image to expand] Both events show clearly on the Te Kaha seismograph drum.

[Compiled from data supplied by the U.S. Geological Survey and Geoscience Australia and their contributing agencies, and GeoNet.]

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