Investigation of ionospheric and geomagnetic response during 2011 Tohoku earthquake using ground based measurement

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Abstract

This paper investigates co-seismic ionospheric disturbances (CID) during the M9.0, 11 March 2011 Tohoku earthquake. The investigation collects data from two sources which are GPS-TEC from GEONET data network and the geomagnetic field from MAGDAS data network. Three types of CID have been detected: direct acoustic wave (894m/s), secondary wave from the Rayleigh surface wave (2862 m/s), and gravity wave from a propagating Tsunami (226 m/s). The directivity of wave propagation has been found to be northward from the epicenter. Short period CID corresponding to direct acoustic waves have been firstly found about 7 min after the main shock and ended 38 min after the main shock with oscillation period varying from 2-7 min. The long period of CID corresponding to Tsunami waves firstly observed 20 min after the main shock, with 10 min of oscillation period and duration of 60 min. Geomagnetic field disturbances have been detected 10-11 min after the main shock with period of 4 min. These geomagnetic field disturbances have been associated with the short-period CID induced by the direct acoustic wave from the epicenter. The correlation between the ionospheric and geomagnetic disturbance shows a good agreement in wave characteristic.

Original languageEnglish
Pages (from-to)115-125
Number of pages11
JournalIndian Journal of Radio and Space Physics
Volume45
Issue number3
Publication statusPublished - 2016

Fingerprint

Tohoku earthquake 2011
ionospheric disturbances
ground-based measurement
ionospherics
earthquakes
disturbance
geomagnetism
shock
acoustic wave
disturbances
geomagnetic field
acoustics
earthquake epicenter
tsunami
tsunami waves
oscillations
oscillation
directivity
gravity waves
surface waves

Keywords

  • Co-seismic ionospheric disturbance (CID)
  • Geomagnetic field
  • GPS-TEC
  • Tsunami

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Earth and Planetary Sciences (miscellaneous)

Cite this

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title = "Investigation of ionospheric and geomagnetic response during 2011 Tohoku earthquake using ground based measurement",
abstract = "This paper investigates co-seismic ionospheric disturbances (CID) during the M9.0, 11 March 2011 Tohoku earthquake. The investigation collects data from two sources which are GPS-TEC from GEONET data network and the geomagnetic field from MAGDAS data network. Three types of CID have been detected: direct acoustic wave (894m/s), secondary wave from the Rayleigh surface wave (2862 m/s), and gravity wave from a propagating Tsunami (226 m/s). The directivity of wave propagation has been found to be northward from the epicenter. Short period CID corresponding to direct acoustic waves have been firstly found about 7 min after the main shock and ended 38 min after the main shock with oscillation period varying from 2-7 min. The long period of CID corresponding to Tsunami waves firstly observed 20 min after the main shock, with 10 min of oscillation period and duration of 60 min. Geomagnetic field disturbances have been detected 10-11 min after the main shock with period of 4 min. These geomagnetic field disturbances have been associated with the short-period CID induced by the direct acoustic wave from the epicenter. The correlation between the ionospheric and geomagnetic disturbance shows a good agreement in wave characteristic.",
keywords = "Co-seismic ionospheric disturbance (CID), Geomagnetic field, GPS-TEC, Tsunami",
author = "Norbaizura Yaso and Hasbi, {Alina Marie} and Mardina Abdullah",
year = "2016",
language = "English",
volume = "45",
pages = "115--125",
journal = "Indian Journal of Radio and Space Physics",
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T1 - Investigation of ionospheric and geomagnetic response during 2011 Tohoku earthquake using ground based measurement

AU - Yaso, Norbaizura

AU - Hasbi, Alina Marie

AU - Abdullah, Mardina

PY - 2016

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N2 - This paper investigates co-seismic ionospheric disturbances (CID) during the M9.0, 11 March 2011 Tohoku earthquake. The investigation collects data from two sources which are GPS-TEC from GEONET data network and the geomagnetic field from MAGDAS data network. Three types of CID have been detected: direct acoustic wave (894m/s), secondary wave from the Rayleigh surface wave (2862 m/s), and gravity wave from a propagating Tsunami (226 m/s). The directivity of wave propagation has been found to be northward from the epicenter. Short period CID corresponding to direct acoustic waves have been firstly found about 7 min after the main shock and ended 38 min after the main shock with oscillation period varying from 2-7 min. The long period of CID corresponding to Tsunami waves firstly observed 20 min after the main shock, with 10 min of oscillation period and duration of 60 min. Geomagnetic field disturbances have been detected 10-11 min after the main shock with period of 4 min. These geomagnetic field disturbances have been associated with the short-period CID induced by the direct acoustic wave from the epicenter. The correlation between the ionospheric and geomagnetic disturbance shows a good agreement in wave characteristic.

AB - This paper investigates co-seismic ionospheric disturbances (CID) during the M9.0, 11 March 2011 Tohoku earthquake. The investigation collects data from two sources which are GPS-TEC from GEONET data network and the geomagnetic field from MAGDAS data network. Three types of CID have been detected: direct acoustic wave (894m/s), secondary wave from the Rayleigh surface wave (2862 m/s), and gravity wave from a propagating Tsunami (226 m/s). The directivity of wave propagation has been found to be northward from the epicenter. Short period CID corresponding to direct acoustic waves have been firstly found about 7 min after the main shock and ended 38 min after the main shock with oscillation period varying from 2-7 min. The long period of CID corresponding to Tsunami waves firstly observed 20 min after the main shock, with 10 min of oscillation period and duration of 60 min. Geomagnetic field disturbances have been detected 10-11 min after the main shock with period of 4 min. These geomagnetic field disturbances have been associated with the short-period CID induced by the direct acoustic wave from the epicenter. The correlation between the ionospheric and geomagnetic disturbance shows a good agreement in wave characteristic.

KW - Co-seismic ionospheric disturbance (CID)

KW - Geomagnetic field

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KW - Tsunami

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