Strong Earthquake Cook Strait. New Zealand 21-Jul-13 (usb000iivv)

See source attribution and disclaimer notice

Preliminary Details

Derived from Event Data Source: USGS See location map below

  • Date-Time: Sunday, July 21, 2013 @ 05:09:31 UTC
  • Earthquake location: 41.713°S, 174.443°E
  • Earthquake depth: 14.0 km
  • Distances:
    1. 46km (28mi) ESE of Blenheim, New Zealand
    2. 53km (32mi) SSW of Karori, New Zealand
    3. 54km (33mi) SSW of Wellington, New Zealand
    4. 67km (41mi) SW of Lower Hutt, New Zealand
    5. 72km (44mi) SSW of Porirua, New Zealand
  • Event ID: usb000iivv

Cook-Strait-Faults

GPS observations have shown that parts of Marlborough moved up to 5cm to the east during last Sunday’s magnitude 6.5 earthquake.

The movement would have gone un-noticed to most people in Marlborough as their senses would have been fully taken up by the earthquake’s strong ground-shaking at the time, GNS Science said.

Quake pushes Blenheim to the east – 24/07/2013


Cook Strait Series 18-21/07/2013

A series of moderate to very strong earthquakes occurred on 18/07/ and 21/07/2013 in Cook Strait, between the North and South Islands of New Zealand.
The series started with a 5.7ML quake in the morning of Friday the 19th July NZST, which was widely felt in Wellington
on the lower North Island.

And a further expansion of the aftershocks series

Cook Strait 18/07-21/08/ 2013, m5.7, 5.8, 6.5, 6.6 and aftershocks A massive study of the series by:

More information on Cook Strait and the 2010 earthquakes can be found here


In 2011 the Earthquake Archives New Zealand 2009-2013 (blog) created a series of cross sections of NZ seismic activity during January. I have shown the relevant data for the Cook Strait area here, but to see the rest you will need to visit the NZ Seismic CrossSections page at the blog.

crosssectionLat39pt5to40pt0map

crosssectionLat40pt0to40pt5map

crosssectionLat40pt5to41pt0map

crosssectionLat41pt0to41pt5map

crosssectionLat41pt5to42pt0map

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About PuterMan

A retired programmer.
This entry was posted in 11 - New Zealand Region, Earthquakes 2013, Magnitude 6 and tagged , , , . Bookmark the permalink.

One Response to Strong Earthquake Cook Strait. New Zealand 21-Jul-13 (usb000iivv)

  1. Pingback: Weekly Geophysical: 26 July 2013 | QVS Data

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