Active Ground Motion in North Carolina and South Carolina, as of 2014/12/05

A certain characteristic motion wave, a large wave like a very complex serration continuing rhythmically for a few hours, was recorded at ten stations in North Caroline and South Caroline on November 19, 2014.

I checked the ground motion of 49 stations in North Caroline and South Caroline in REV.

http://rev.seis.sc.edu/stations.html

[Stations in North Caroline and South Caroline]

1) TA.U55A, 2) TA.U56A, 3) TA.U57A, 4) TA.U58A, 5) TA.U59A,

6) TA.U60A, 7) TA.U61A, 8) N4.V53, 9) TA.54A, 10) TA.V55A,

11) TA.V56A, 12) TA.V57A, 13) TA.V58A, 14) TA.V59A, 15) TA.60A,

16) TA.V61A, 17) TA.V62A, 18) CO.CASEE, 19) TA.W54A, 20) CO.PAULI,

21) TA.KMSC, 22) TA.W56A, 23) TA.W57A, 24) TA.W58A, 25) TA.W59A,

26) US.CNNC, 27) TA.W60A, 28) TA.W61A, 29) TA.X54A, 30) CO.HODGE,

31) TA.X55A, 32) TA.X56A, 33) TA.X57A, 34) TA.X58A, 35) TA.X59A,

36) TA.X60A, 37) TA.Y55A, 38) TA.Y56A, 39) TA.Y57A, 40) TA.Y58A,

41) TA.Y59A, 42) TA.Y60A, 43) CO.HAW, 44) TA.Z56A, 45) TA.Z57A,

46) TA.Z58A, 47) TA.Z59A, 48) TA.157A, 49) TA.158A

I found the stations which showed serration wave or big motion, Jolt, Jiggle, etc.

I showed a map of these stations and the example of ground motion of each stations.

Ground motion getting active in North Caroline and South Caroline seems to be related to the recent progress of the bowing of the N American Plate and must be due to a diagonal stress on the N American continent, pulling the SE down into the crumbling Caribbean and into the widening Atlantic.

Map of Plate Movement of N America, mainly US, Until/During the New Madrid Adjustment

(1) Stations which showed serration wave

(2) Stations which showed big motion; Jolt, Jiggle, etc.

(3) Map of stations which showed serration wave

(4) Seismogram showing serration wave

(5) Map of stations which showed big motion; Jolt, Jiggle, etc.

(6) Example of ground motion of each stations

------------------------------------------------------------------------------

(1) Stations which showed serration wave

2014/02/13: Y56A

2014/11/19: V55A, W54A, X54A, X55A, X56A, Y56A, Z56A, Z57A, Z58A, 157A

2014/11/25: X55A

2014/12/02: Y58A, Z58A

2014/12/05: Y55A

(2) Stations which showed big motion; Jolt, Jiggle, etc.

* KMSC (07/29, 08/01)

* CNNC (05/27, 05/28, 06/09, 06/17, 06/23, 07/08, 11/26, 11/28)

* W61A (06/11, 06/15, 06/16, 06/17, 06/22, 06/23, 08/06)

* X55A (11/27)

* X56A (07/01, 11/16, 11/26)

* X58A (05/24, 06/15, 11/20)

* Y55A (11/22)

* Y58A (06/25, 06/26, 07/13, 08/03, 11/24)

* Y59A (08/03)

* Z58A (11/24, 11/25, 11/27)

* 157A (11/20)

* 158A (07/29, 11/19)

(3) Map of stations which showed serration wave

(4) Seismogram showing serration wave

(5) Map of stations which showed big motion; Jolt, Jiggle, etc.

(6) Example of ground motion of each stations

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Comment by Kojima on January 9, 2015 at 6:50am

* Stations which showed serration wave on 2015/01/06:

U59A, V58A, V61A, W57A, X58A, Y57A, Y58A, Y59A, Y60A 

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