Central NZ Earthquakes in Cook Strait: A Complex Tectonic Region

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SUMMARY

The recent seismic activity in the Cook Strait region of New Zealand has been characterized by a series of earthquakes, including a significant M6.5 event. This area is a complex tectonic zone where oblique slip transitions to a subduction zone, impacting both the North and South Islands. The USGS moment tensor analysis supports the identification of a NW-SE striking fault. The region has experienced over 300 aftershocks following the main events, highlighting ongoing tectonic activity.

PREREQUISITES
  • Understanding of tectonic plate interactions, specifically subduction and oblique slip.
  • Familiarity with seismic event magnitudes and their implications.
  • Knowledge of the geological features of New Zealand, including the Southern Alps and Cook Strait.
  • Experience with seismographic data interpretation and analysis.
NEXT STEPS
  • Research the geological history of the Southern Alps and its formation through tectonic processes.
  • Study the mechanics of subduction zones and their role in earthquake generation.
  • Learn about the USGS moment tensor analysis and its applications in understanding seismic events.
  • Explore the impact of tectonic activity on landforms and ecosystems in New Zealand.
USEFUL FOR

Geologists, seismologists, and anyone interested in understanding the tectonic dynamics of New Zealand, particularly those studying earthquake patterns and their geological implications.

  • #31
haha Lisa ... we had better send some foam rubber to Stevie

the area is still producing a few shakes, but has quietened down over the last week
The M5.1 was too small for me to record in Australia, some 2500-3000km away

Dave
 
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  • #32
davenn said:
haha Lisa ... we had better send some foam rubber to Stevie

the area is still producing a few shakes, but has quietened down over the last week
The M5.1 was too small for me to record in Australia, some 2500-3000km away

Dave

Hi Dave

Did you capture the earthquake we had 20 mins ago? http://www.geonet.co.nz/quakes/region/newzealand/2014p051675
 
  • #33
yup sure did

have a look on the seismogram at
http://www.sydneystormcity.com/seismograms.htm

the waves are still rolling in

attachment.php?attachmentid=65835&stc=1&d=1390190274.gif


Dave
 

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  • 140120 1452NZ M6.3 cstl SE Nth Is NZ zhi.gif
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