Wellington, NZ, should prepare for more Earthquakes

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Discussion Overview

The discussion centers on recent earthquakes in Wellington, New Zealand, including their magnitudes, potential causes, and implications for residents. Participants share personal experiences, news reports, and scientific insights related to the seismic activity, exploring both the immediate effects and broader geological concerns.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • Some participants report feeling multiple earthquakes, including a 5.7 magnitude quake centered around Seddon and a subsequent 6.5 magnitude quake.
  • There is concern that the sequence of earthquakes, including a significant number within a short time frame, may indicate a buildup of pressure or the emergence of a new fault line.
  • Some participants express hope that the recent quakes might relieve pressure and prevent a larger earthquake from occurring.
  • Seismologists are noted to be surprised by the occurrence of a 6.5 magnitude quake following a 5.8, suggesting unexpected geological activity.
  • Participants mention the possibility of quakes creeping northward and the implications this could have for Wellington's geological stability.
  • There are references to the depth of the earthquakes being shallow (8-12 km), which may exacerbate their effects.
  • Some participants share links to resources for tracking earthquakes and express concern for the safety of residents in affected areas.

Areas of Agreement / Disagreement

Participants express a range of concerns and hypotheses regarding the earthquakes, but there is no consensus on the causes or implications of the seismic activity. Multiple competing views remain regarding the potential for future quakes and the geological factors at play.

Contextual Notes

Limitations include the uncertainty surrounding the identification of new fault lines and the implications of the shallow depth of the earthquakes. The discussion reflects ongoing concerns and evolving understanding of the seismic activity in the region.

Who May Find This Useful

Residents of Wellington, seismologists, geologists, and individuals interested in earthquake preparedness and geological studies may find this discussion relevant.

StevieTNZ
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http://nz.news.yahoo.com/a/-/top-stories/18084609/wellingtonians-should-prepare-for-more-shakes/

Today is Sunday. This morning I felt the one at 7.30am.

On Friday, we had a 5.7 magnitude earthquake centered around Seddon, as well. http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10900169

Today's earthquake history: http://www.geonet.co.nz/quakes/region/newzealand/all

http://info.geonet.org.nz/pages/viewpage.action?pageId=5799971
 
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Earth sciences news on Phys.org
I hope these dozens of quakes are letting off enough pressure to prevent a large quake. Thirty significant quakes within a couple of hours is pretty bad.
 
http://nz.news.yahoo.com/a/-/top-stories/18090995/quake-closes-parts-of-wellington/

The scientists are stunned that after the 5.8, there should not have been a 6.5 that evening.
 
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Hopefully this isn't a trend of quakes creeping up north
 
wukunlin said:
Hopefully this isn't a trend of quakes creeping up north

Quick, you guys need to build a Great Earthquake Wall!
 
They believe the cause of these earthquakes is a new fault line. http://www.stuff.co.nz/national/8950508/Swarm-could-trigger-Wellington-fault

Seismologists say the weekend's swarm of earthquakes could be on a new fault they have not mapped before, and could possibly trigger movement on the feared Wellington fault.

In other earthquake news: http://nz.news.yahoo.com/a/-/top-stories/18132774/marlborough-moved-5cm-to-east-in-quake/
 
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  • #10
Residents in New Zealand's capital have been reminded that large aftershocks are still a threat a week following a major earthquake, with a 5.4 magnitude tremor shaking the city overnight.

http://nz.news.yahoo.com/a/-/top-stories/18188769/large-aftershock-rocks-capital/
 
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  • #11
More earthquakes:

Yesterday: http://www.stuff.co.nz/dominion-post/news/8989172/Shaky-morning-for-Cook-Strait
Which made Barbara Stewart, an MP sitting in Parliament say the following on Facebook:
Wellington keeps rocking and rolling this week. The biggest so far has been a 4.9 earthquake at which shook the Debating Chamber and Parliament Buildings this morning!

This morning (Friday): http://nz.news.yahoo.com/a/-/top-stories/18294351/another-quake-rattles-central-new-zealand/
 
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  • #12
Our department's (Physics @ UoA) labs just recorded a 6.9 quake at wellington :eek:

http://www.iris.edu/amaseis/schools/as1imgs/auck.png
 
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  • #13
wukunlin said:
Our department's (Physics @ UoA) labs just recorded a 6.9 quake at wellington :eek:

http://www.iris.edu/amaseis/schools/as1imgs/auck.png

Wow. That's really a big one.

The USGS site -

http://earthquake.usgs.gov/earthquakes/map/

shows two big aftershocks, 5.7 and 5.2.

Hang on, Kiwis! I really hope all is well there :frown:!
 
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