Mag 6.1 Earthquake, Waitara, NZ - very deep 227.3 km

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Discussion Overview

The discussion revolves around a recent magnitude 6.1 earthquake near Waitara, New Zealand, focusing on its depth, effects, and comparisons to other seismic events. Participants share personal experiences and seek to understand the geological factors influencing the earthquake's impact.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant notes the magnitude and depth of the Waitara earthquake, emphasizing its significant depth of 227.3 km.
  • Another participant shares their personal experience of fear during the quake, indicating that the intensity and duration were alarming.
  • There is mention of a previous earthquake in the Drake Passage, with a magnitude of 6.3 and a shallow depth of 10 km, prompting comparisons between the two events.
  • A participant references a news explanation regarding why those near the epicenter may not have felt the earthquake as strongly, suggesting geological factors related to the Australia and Pacific plates.
  • Concerns are expressed about the emotional impact on individuals living near the epicenter, with one participant sharing that a friend was devastated by the news of the earthquake.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the reasons for the varying experiences of the earthquake's effects, and multiple viewpoints regarding its geological implications are presented.

Contextual Notes

Some claims about the earthquake's magnitude and depth vary among participants, with discrepancies noted in reported values. The discussion also reflects uncertainty about the geological explanations for the earthquake's impact.

Astronuc
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Astronuc said:
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hiup/executive
M 6.1 - 64km ESE of Waitara, New Zealand
2018-10-30 02:13:39 (UTC)
39.054°S 174.977°E
227.3 km depth - every deep

Yesterday, a Mag 6.3 in Drake Passage, south of Patagonia.
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hied/executive
2018-10-29 06:54:21 (UTC)
57.405°S 66.409°W
10.0 km depth - shallow!

@davenn, did you register these?
Yes I did record them :) and another 6.1 in El Salvador prior to the 6.3 in the Drake Passage

The New Zealand event was a M6.2 and 207km deep

Map of New Zealand.
Moderate earthquake (4 hours ago)

  • Tue Oct 30 2018 3:13 PM
  • Magnitude: 6.2
  • Depth: 207 km
  • 25 km south-west of Taumarunui

upload_2018-10-30_18-12-23.png
Dave
 

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The news people gave a good explanation as to why those close to the epicenter didn't really notice much, unlike those in Wellington and further south. But I cannot recall it now, ha. I think its the type of earth, and the alignment of the Australia and Pacific plates.
 
Astronuc said:
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hiup/executive
M 6.1 - 64km ESE of Waitara, New Zealand
2018-10-30 02:13:39 (UTC)
39.054°S 174.977°E
227.3 km depth - every deep

Yesterday, a Mag 6.3 in Drake Passage, south of Patagonia.
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hied/executive
2018-10-29 06:54:21 (UTC)
57.405°S 66.409°W
10.0 km depth - shallow!

@davenn, did you register these?

A friend of mine who lived a city away from the epicenter was still devastated upon hearing this.
 
Stella Briggs said:
A friend of mine who lived a city away from the epicenter was still devastated upon hearing this.
why ?
 

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