Are Two New Zealand Earthquakes a PM Alert from @StevieNZ?

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Discussion Overview

The discussion revolves around recent earthquakes in New Zealand, specifically a 5.1 magnitude event near Cook Strait and a 6.1 magnitude event south of the South Island. Participants share their experiences, data recordings, and perspectives on earthquake frequency and activity levels.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant references a PM alert regarding a 5.1 magnitude earthquake near Cook Strait, noting it as a significant event.
  • Another participant mentions the USGS reported a 6.1 magnitude earthquake south of the South Island, expressing confusion over the timing of the reports.
  • Data recordings of the earthquakes are shared, highlighting a strong T-phase wave associated with the seismic activity.
  • Some participants express concern about the frequency of earthquakes, with one noting that the current year has seen fewer significant events compared to historical averages.
  • A participant provides context by referencing a major earthquake in Mexico City, drawing parallels to earthquake preparedness and public awareness.
  • Humorous remarks about the Earth trying to rid itself of humans are made, indicating a mix of seriousness and levity in the discussion.

Areas of Agreement / Disagreement

Participants express varying levels of concern about earthquake frequency, with some noting a decrease in significant events this year while others share apprehension about future quakes. There is no consensus on the implications of these observations.

Contextual Notes

Participants reference specific earthquake magnitudes and locations, but there is uncertainty regarding the implications of these events on broader seismic activity trends. The discussion includes personal experiences and data interpretations that may not be universally applicable.

Who May Find This Useful

Individuals interested in seismology, earthquake preparedness, and those following geological events in New Zealand may find this discussion relevant.

davenn
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from a PM alert to me from @StevieNZ

http://www.geonet.org.nz/earthquake/2017p708412 - felt that a few mins ago

yup well that one was central Cook Str. 5.1 is a respectable event :)
I didn't record it or the signal was lost in the overpowering one from S of the South Island
which the USGS put at 6.1

Odd, because https://www.stuff.co.nz/national/nz-earthquake/97046815/earthquake-hits-south-of-invercargill earlier before

I recorded it quite well
the bottom event on the trace

https://www.physicsforums.com/attachments/zhi-gif.211389/It has produced a really strong T-phase wave
the burst of signal at ~ 02:07UT ( bottom trace)

https://www.physicsforums.com/attachments/syde-gif.211390/Dave
 
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Please, no more quakes, Earth! :(
 
StevieTNZ said:
Please, no more quakes, Earth! :(

it's actually been a really quiet year this year
average are well down for the M7.0 to 7.9 events

so far this year there have only been 4 events in that category
there avg up till around September would normally be around 12 with around 18 as a yearly avg
I haven't seen it this low for a really long timeDave
 
StevieTNZ said:
Please, no more quakes, Earth! :(
For perspective - http://www.canterburyquakelive.co.nz/

The U.S. Geological Survey said the magnitude 7.1 quake hit at 1:14 p.m. (2:15 p.m. EDT) and was centered near the Puebla state town of Raboso, about 76 miles (123 kilometers) southeast of Mexico City.
https://www.yahoo.com/news/major-earthquake-shakes-mexico-city-182057047.html
Earlier in the day, workplaces across Mexico City held earthquake readiness drills on the anniversary of the 1985 quake, a magnitude 8.0 shake that killed thousands of people and devastated large parts of the capital.
 
Last edited:
StevieTNZ said:
Please, no more quakes, Earth! :(
Earth is trying its best to get rid of the human fleas...
 

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