Magnitude 5.8 shallow earthquake hit off the east coast of North Island, New Zealand

magnitude-5-8-shallow-earthquake-hit-off-the-east-coast-of-north-island-new-zealand

Strong and shallow earthquake with recorded magnitude of 5.8 hit off the east coast of North Island, New Zealand on July 21, 2012 at 4:54 UTC. Magnitude of 5.8 was confirmed by GeoNet, EMSC and USGS. GeoNet is reporting depth of 12km, EMSC 10km and USGS 20 km. Epicenter was located 179 km NE Gisborne (population 34,274) and 318 km E Tauranga (population 110,338) at 37.755°S, 179.677°E.

Despite the strength of the quake – which was felt as far away as Whakatane, Opotiki and Wairoa – locals reported no damage.

It comes as a series of quakes in the central North Island saw the Volcano Alert Level at Mt Tongariro being raised on Friday.

GNS Science volcanologist Brad Scott told Stuff on Friday the increased activity ‘‘just means that something has upset Tongariro, and some subterranean process is occurring’’.

Magnitude 5.8
Date-Time
  • Saturday, July 21, 2012 at 04:54:07 UTC
  • Saturday, July 21, 2012 at 04:54:07 PM at epicenter
Location 37.755°S, 179.677°E
Depth 20 km (12.4 miles)
Region OFF EAST COAST OF THE NORTH ISLAND, N.Z.
Distances 177 km (109 miles) NE of Gisborne, New Zealand
238 km (147 miles) E of Whakatane, New Zealand
304 km (188 miles) E of Rotorua, New Zealand
308 km (191 miles) NE of Napier, New Zealand
Location Uncertainty horizontal +/- 15.5 km (9.6 miles); depth +/- 4.9 km (3.0 miles)
Parameters NST=185, Nph=185, Dmin=122.5 km, Rmss=1.02 sec, Gp= 32°,
M-type=regional moment magnitude (Mw), Version=D
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event ID usb000bccw

 

Featured image: Google Earth + USGS

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