Did You Feel the New Zealand Quake?

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Discussion Overview

The discussion centers around a recent earthquake that occurred offshore of the lower west coast of the North Island of New Zealand. Participants share their experiences of the quake, inquire about its characteristics, and discuss related seismic data.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant reports feeling a strong quake and shares links to seismic data.
  • Another participant inquires about the absence of injuries following the quake.
  • A participant questions whether the quake could be classified as a mantle quake, given its depth and the average thickness of the Earth's crust in the region.
  • Several participants express their experiences of the quake, noting it was quite a shake.
  • One participant mentions experiencing another quake shortly after the first, providing additional seismic details.
  • USGS reports are shared, detailing magnitudes and depths of subsequent quakes near Foxton, New Zealand.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the classification of the quake or the implications of its depth. Multiple viewpoints regarding the nature of the quake and its effects are present.

Contextual Notes

There are uncertainties regarding the classification of the quake as a mantle quake, as well as the implications of the reported depths in relation to the Earth's crust thickness.

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No injuries so far?
 
The quake was about 37 +/- 4 km deep according to the source you linked. The average thickness of the Earth's crust is 35 km, says Wikipedia. In a documentary about NZ I've heard today that Earth's crust is especially thin around NZ.

Hence my question: Was this a mantle quake?
 


Was quite a shake!
 
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