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96937

Date: April 08, 2023 at 17:05:19
From: georg, [DNS_Address]
Subject: what kind of beachball is this?

URL: https://earthquake.usgs.gov/earthquakes/eventpage/us7000jkfd/executive


this is a new one on me


Responses:
[96941] [96944] [96940] [96947] [96949] [96942] [96939] [96943] [96938]

96941

Date: April 08, 2023 at 19:54:09
From: jordan, [DNS_Address]
Subject: Re: what kind of beachball is this?

URL: https://www.ucalgary.ca/news/alberta-experiences-largest-recorded-earthquake-can-we-expect-see-more


Alberta experiences largest recorded earthquake. Can we
expect to see more?


Responses:
[96944]

96944

Date: April 08, 2023 at 20:00:06
From: georg, [DNS_Address]
Subject: Re: what kind of beachball is this?


it looks like that is so ... 16th of Nisan and the third
day of passover


Responses:
None

96940

Date: April 08, 2023 at 19:39:15
From: Skywise, [DNS_Address]
Subject: Re: what kind of beachball is this?


https://serc.carleton.edu/files/NAGTWorkshops/structure04/Focal_mechanism_primer.pdf

Specifically page 9.

Brian


Responses:
[96947] [96949] [96942]

96947

Date: April 10, 2023 at 08:09:05
From: georg, [DNS_Address]
Subject: Re: what kind of beachball is this?


thank you so much for posting this ... its printed out
and waiting only for me to find the time to study it


Responses:
[96949]

96949

Date: April 10, 2023 at 20:38:28
From: Skywise, [DNS_Address]
Subject: Re: what kind of beachball is this?


You're welcome.

In brief, the type of beach ball you asked about may just mean the
level of uncertainty in the solution, or that the faulting process
was not clean, but more complex.

Brian


Responses:
None

96942

Date: April 08, 2023 at 19:57:17
From: georg, [DNS_Address]
Subject: Re: what kind of beachball is this?

URL: https://serc.carleton.edu/files/NAGTWorkshops/structure04/Focal_mechanism_primer.pdf


thanks, it is being printed as I write this


Responses:
None

96939

Date: April 08, 2023 at 18:28:54
From: Redhart, [DNS_Address]
Subject: Re: what kind of beachball is this?


Looks like a thrust quake. (fault pushing up)


Responses:
[96943]

96943

Date: April 08, 2023 at 19:58:51
From: georg, [DNS_Address]
Subject: Re: what kind of beachball is this?


interesting, thanks


Responses:
None

96938

Date: April 08, 2023 at 17:06:43
From: georg, [DNS_Address]
Subject: Re: what kind of beachball is this?

URL: https://earthquake.usgs.gov/earthquakes/eventpage/us7000jkfd/moment-tensor


what faults are near there


Responses:
None

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