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
- 46km (28mi) ESE of Blenheim, New Zealand
- 53km (32mi) SSW of Karori, New Zealand
- 54km (33mi) SSW of Wellington, New Zealand
- 67km (41mi) SW of Lower Hutt, New Zealand
- 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.
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.