Big Under Ground Alteration Around the world

[Kojima]

In my previous blog,

Change of ground motion is accelerating globally in May, 2014

I showed some interesting ground motion found in the Rapid Earthquake Viewer (REV),

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

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

where the seismogram showing a group of some characteristic large ground motion forms,

indicating big under ground alteration, was observed at some stations. So far, I have found out 15 stations showing it by searching in REV.

01) 2014/03/05: IU.DAV: Davao, Philippines; 7.07 N, 125.58 E

02) 2014/04/16: CU.ANWB: Willy Bob, Antigua and Barbuda; 17.67 N, 61.79 W

03) 2014/04/16: IU.RAR: Rarotonga, Cook Islands; 21.21 S, 159.77 W

04) 2014/05/14: IU.LSZ; Lusaka, Zambia; 15.28 S, 28.19 E

05) 2014/05/18: IU.KMBO; Kilima Mbogo, Kenya; 1.13 S, 37.25 E

06) 2014/05/19: IU.RSSD; Black Hills, South Dakota, USA; 44.12 N, 104.04 W

07) 2014/05/21: IU.MAJO; Matsushiro, Japan; 36.55 N, 138.20 E

08) 2014/05/21: IU.RCBR; Riachuelo, Brazil; 5.83 S, 35.90 W

09) 2014/05/22: IU.TARA; Tarawa Island, Republic of Kiribati; 1.35 N, 172.92 E

10) 2014/05/27: US.MSO; Missoula, Montana, USA; 46.83 N, 113.94 W

11) 2014/05/28: US.CNNC; Cliffs of the Neuse, North Carolina, USA; 35.24 N, 77.89 W

12) 2014/05/29: US.KVTX; Kingsville, Texas, USA; 27.55 N, 97.89 W

13) 2014/05/30: US.TZTN; Tazewell, Tennessee, USA; 36.54 N, 83.55 W

14) 2014/06/02: US.DUG; Dugway, Tooele County, Utah, USA; 40.19 N, 112.81 W

15) 2014/06/05: IU.PMSA; Palmer Station, Antarctica; 64.77 S, 64.05 W

The ground motion started with a big smooth wave at almost same time in a day, between 16:00 and 20:00, at every 15 station, indicating the earth wobble in a factor in this ground motion, and ended with a big jagged wave for some hours.

I show the seismogram of each station below. 

01) 2014/03/05: IU.DAV: Davao, Philippines; 7.07 N, 125.58 E

02) 2014/04/16: CU.ANWB: Willy Bob, Antigua and Barbuda; 17.67 N, 61.79 W

03) 2014/04/16: IU.RAR: Rarotonga, Cook Islands; 21.21 S, 159.77 W

04) 2014/05/14: IU.LSZ; Lusaka, Zambia; 15.28 S, 28.19 E

05) 2014/05/18: IU.KMBO; Kilima Mbogo, Kenya; 1.13 S, 37.25 E

06) 2014/05/19: IU.RSSD; Black Hills, South Dakota, USA; 44.12 N, 104.04 W

07) 2014/05/21: IU.MAJO; Matsushiro, Japan; 36.55 N, 138.20 E

08) 2014/05/21: IU.RCBR; Riachuelo, Brazil; 5.83 S, 35.90 W

09) 2014/05/22: IU.TARA; Tarawa Island, Republic of Kiribati; 1.35 N, 172.92 E

10) 2014/05/27: US.MSO; Missoula, Montana, USA; 46.83 N, 113.94 W

11) 2014/05/28: US.CNNC; Cliffs of the Neuse, North Carolina, USA; 35.24 N, 77.89 W

12) 2014/05/29: US.KVTX; Kingsville, Texas, USA; 27.55 N, 97.89 W

13) 2014/05/30: US.TZTN; Tazewell, Tennessee, USA; 36.54 N, 83.55 W

14) 2014/06/02: US.DUG; Dugway, Tooele County, Utah, USA; 40.19 N, 112.81 W

15) 2014/06/05: IU.PMSA; Palmer Station, Antarctica; 64.77 S, 64.05 W

[Kojima]

120) 2015/02/27: US.SDCO; Great Sand Dunes National Park, Colorado, USA; 37.75 N, 105.50 W

http://rev.seis.sc.edu/stations/US/SDCO?year=2015&month=2&d...

[Kojima]

119) 2015/02/26: CU.BCIP: Isla Barro Colorado, Panama; 9.17 N, 79.84 W

http://rev.seis.sc.edu/stations/CU/BCIP?year=2015&month=2&d...

[Kojima]

118) 2015/02/25: US.BW06; Boulder Array Site 6 (Pinedale Array Site 6), Wyoming, USA; 42.77 N, 109.56 W

http://rev.seis.sc.edu/stations/US/BW06?year=2015&month=2&d...

[Kojima]

117) 2015/02/25: IU.WAKE; Wake Island; 19.28 N, 166.65 E

http://rev.seis.sc.edu/stations/IU/WAKE?year=2015&month=2&d...

[Kojima]

116) 2015/02/23: CU.GTBY; Guantanamo Bay, Cuba; 19.93 N, 75.11 W

http://rev.seis.sc.edu/stations/CU/GTBY?year=2015&month=2&d...

[Kojima]

115) 2015/02/18: US.JFWS; Jewell Farm, Wisconsin, USA; 42.91 N, 90.25 W

http://rev.seis.sc.edu/stations/US/JFWS?year=2015&month=2&d...

[Kojima]

114) 2015/02/06: IU.CASY; Casey, Antarctica; 66.28 S, 110.54 E

http://rev.seis.sc.edu/stations/IU/CASY?year=2015&month=2&d...

[Kojima]

113) 2015/02/05: IU.HKT; Hockley, Texas; 29.96 N, 95.84 W

http://rev.seis.sc.edu/stations/IU/HKT?year=2015&month=2&da...

[Kojima]

112) 2015/02/04: IU.KONO; Kongsberg, Norway; 59.65 N, 9.60 E

http://rev.seis.sc.edu/stations/IU/KONO?year=2015&month=2&d...

[Kojima]

111) 2015/02/02: IU.MAJO; Matsushiro, Japan; 36.55 N, 138.20 E

http://rev.seis.sc.edu/stations/IU/MAJO?year=2015&month=2&d...