TY - GEN
T1 - Coseismic ionospheric disturbances (CID) after West Sumatra earthquake 2016 using GNSS-TEC and possibility of early warning system during the event
AU - Cahyadi, Mokhamad Nur
AU - Anjasmara, Ira Mutiara
AU - Khomsin,
AU - Yusfania, Meiriska
AU - Sari, Atika
AU - Saputra, Febrian Adi
AU - Muslim, Buldan
AU - Rwabudandi, Irene
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/7/18
Y1 - 2018/7/18
N2 - In this research, we observed Coseismic Ionospheric Disturbances (CID) of West Sumatra March 2nd, 2016 earthquake with GNSS-TEC. This earthquake had strike slip focal mechanism with earthquake moment magnitude 7.8 Mw. In order to observe ionospheric fluctuations, some GNSS stations owned by Geospatial Information Agency (BIG) were used, these stations were spread in Sumatera Island (CAIR, CBKT, CPAR, CPDG, and CSEL stations). The epoch of the GNSS Stations were 15 seconds which included GLONASS, GALILEO and GPS satellites. The CID analysis showed TEC anomalies at 11 to 15 minutes after the earthquake with magnitude 2 - 3.5 TECU. It was recorded by GPS satellites number 17 and GLONASS satellite number 14. The fluctuation of signal propagation velocity was about 0.98 km/s as acoustic wave which was calculated using peak to peak of the disturbance signal. Distance of CID signal could be observed around 600 km from epicenter with south-west location. Earthquake early warning system could not be observed in term preseismic ionospheric disturbances but appeared on seven days before the earthquake, which ionospheric anomalies was calculated using statistically method. Meanwhile, tsunami warning could be done using CID method if arrival time of tsunami is more than 15 minutes to coastline.
AB - In this research, we observed Coseismic Ionospheric Disturbances (CID) of West Sumatra March 2nd, 2016 earthquake with GNSS-TEC. This earthquake had strike slip focal mechanism with earthquake moment magnitude 7.8 Mw. In order to observe ionospheric fluctuations, some GNSS stations owned by Geospatial Information Agency (BIG) were used, these stations were spread in Sumatera Island (CAIR, CBKT, CPAR, CPDG, and CSEL stations). The epoch of the GNSS Stations were 15 seconds which included GLONASS, GALILEO and GPS satellites. The CID analysis showed TEC anomalies at 11 to 15 minutes after the earthquake with magnitude 2 - 3.5 TECU. It was recorded by GPS satellites number 17 and GLONASS satellite number 14. The fluctuation of signal propagation velocity was about 0.98 km/s as acoustic wave which was calculated using peak to peak of the disturbance signal. Distance of CID signal could be observed around 600 km from epicenter with south-west location. Earthquake early warning system could not be observed in term preseismic ionospheric disturbances but appeared on seven days before the earthquake, which ionospheric anomalies was calculated using statistically method. Meanwhile, tsunami warning could be done using CID method if arrival time of tsunami is more than 15 minutes to coastline.
KW - 2 March Sumatra Earthquake
KW - CID
KW - GNSS
KW - TEC
KW - acoustic wave
UR - http://www.scopus.com/inward/record.url?scp=85050815212&partnerID=8YFLogxK
U2 - 10.1063/1.5047304
DO - 10.1063/1.5047304
M3 - Conference contribution
AN - SCOPUS:85050815212
T3 - AIP Conference Proceedings
BT - International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017
A2 - Meilano, Irwan
A2 - Ito, Takeo
A2 - Cummins, Phil R.
A2 - Zulfakriza, null
PB - American Institute of Physics Inc.
T2 - 7th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017
Y2 - 20 November 2017 through 21 November 2017
ER -