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]

110) 2015/01/31: IU.SDV; Santo Domingo, Venezuela; 8.88 N, 70.63 W

http://rev.seis.sc.edu/stations/IU/SDV?year=2015&month=1&da...

http://rev.seis.sc.edu/stations/IU/SDV?year=2015&month=1&da...

http://rev.seis.sc.edu/stations/IU/SDV?year=2015&month=1&da...

[Kojima]

109) 2015/01/30: US.TPNV; Topopah Spring, Nevada, USA; 36.95 N, 116.25 W

http://rev.seis.sc.edu/stations/US/TPNV?year=2015&month=1&d...

[Kojima]

108) 2015/01/28: IU.SFJD; Sondre Stromfjord, Greenland; 67.00 N, 50.62 W

http://rev.seis.sc.edu/stations/IU/SFJD?year=2015&month=1&d...

[Kojima]

107) 2015/01/22: US.LONY; Lake Ozonia, New York, USA; 44.62 N, 74.58 W

http://rev.seis.sc.edu/stations/US/LONY?year=2015&month=1&d...

[Kojima]

106) 2015/01/16: IU.LCO; Las Campanas Astronomical Observatory, Chile; 29.01 S, 70.70 W

http://rev.seis.sc.edu/stations/IU/LCO?year=2015&month=1&da...

* See also S America Roll: A Big Change of Ground Motion at LCO on 2014/11/02.

 

[Kojima]

105) 2015/01/14: US.AAM; Ann Arbor, Michigan, USA; 42.30 N, 83.66 W

http://rev.seis.sc.edu/stations/US/AAM?year=2015&month=1&da...

[Kojima]

104) 2015/01/12: IU.ADK; Adak, Aleutian Islands, Alaska; 51.88 N, 176.68 W

http://rev.seis.sc.edu/stations/IU/ADK?year=2015&month=1&da...

[Kojima]

103) 2015/01/09: CU.GTBY; Guantanamo Bay, Cuba; 19.93 N, 75.11 W

http://rev.seis.sc.edu/stations/CU/GTBY?year=2015&month=1&d...

[Kojima]

102) 2015/01/07, 08: CU.GRTK: Grand Turk, Turks and Caicos Islands; 21.51 N, 71.13 W

http://rev.seis.sc.edu/stations/CU/GRTK?year=2015&month=1&d...

http://rev.seis.sc.edu/stations/CU/GRTK?year=2015&month=1&d...

[Kojima]

101) 2015/01/05: IU.TUC; Tucson, Arizona; 32.31 N, 110.78 W

http://rev.seis.sc.edu/stations/IU/TUC?year=2015&month=1&da...