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


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.






About PuterMan

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

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

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

Leave a Reply (All Comments are moderated by a human)

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.