Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013

S. M. Buhari, Mardina Abdullah, T. Yokoyama, Alina Marie Hasbi, Y. Otsuka, M. Nishioka, S. A. Bahari, T. Tsugawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Malaysia Real-Time Kinematics GNSS Network (MyRTKnet) which consists of 78 GPS receivers was used to investigate the occurrence of equatorial plasma bubble (EPB) along 96°E-120°E longitude. In this study, we present the monthly occurrence rate of EPB along the geographical longitudes of 96°E-120°E for a half of solar cycle period (2008-2013). A 2D map of rate of TEC change index (ROTI) projected at 300 km altitude was derived from the signal paths between GPS satellites and the receivers. A ROTI keogram for one day period was obtained from the east-west cross section of the 2D ROTI maps at 4°N for every 5 min. The occurrence day of EPB was determined from the keogram by the existence of ROTI larger than 0.1 TECU/min within the 96°E-120°E longitude. The results show that the occurrence of EPB along the 96°E-120°E has maximum during equinoctial months and is consistent with previous studies. The occurrence rate of EPB during equinoctial months shows similar characteristics in low and high solar activity due to the broad observational coverage of the MyRTKnet. In contrast, the occurrence rate of EPB during solstice months shows significant relation with solar activity. Solstice months recorded high occurrence rate of EPB in high solar activity that might be attributed to post-midnight irregularities.

Original languageEnglish
Title of host publicationInternational Conference on Space Science and Communication, IconSpace
PublisherIEEE Computer Society
Pages101-105
Number of pages5
Volume2015-September
ISBN (Print)9781479919406
DOIs
Publication statusPublished - 29 Sep 2015
Event4th International Conference on Space Science and Communication, IconSpace 2015 - Langkawi, Malaysia
Duration: 10 Aug 201512 Aug 2015

Other

Other4th International Conference on Space Science and Communication, IconSpace 2015
CountryMalaysia
CityLangkawi
Period10/8/1512/8/15

Fingerprint

Climatology
Malaysia
Kinematics
Plasmas
recipient
Global positioning system
coverage
time
Satellites

Keywords

  • equatorial plasma bubble
  • GPS ROTI measurement
  • ionospheric irregularities

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Communication

Cite this

Buhari, S. M., Abdullah, M., Yokoyama, T., Hasbi, A. M., Otsuka, Y., Nishioka, M., ... Tsugawa, T. (2015). Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013. In International Conference on Space Science and Communication, IconSpace (Vol. 2015-September, pp. 101-105). [7283752] IEEE Computer Society. https://doi.org/10.1109/IconSpace.2015.7283752

Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013. / Buhari, S. M.; Abdullah, Mardina; Yokoyama, T.; Hasbi, Alina Marie; Otsuka, Y.; Nishioka, M.; Bahari, S. A.; Tsugawa, T.

International Conference on Space Science and Communication, IconSpace. Vol. 2015-September IEEE Computer Society, 2015. p. 101-105 7283752.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Buhari, SM, Abdullah, M, Yokoyama, T, Hasbi, AM, Otsuka, Y, Nishioka, M, Bahari, SA & Tsugawa, T 2015, Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013. in International Conference on Space Science and Communication, IconSpace. vol. 2015-September, 7283752, IEEE Computer Society, pp. 101-105, 4th International Conference on Space Science and Communication, IconSpace 2015, Langkawi, Malaysia, 10/8/15. https://doi.org/10.1109/IconSpace.2015.7283752
Buhari SM, Abdullah M, Yokoyama T, Hasbi AM, Otsuka Y, Nishioka M et al. Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013. In International Conference on Space Science and Communication, IconSpace. Vol. 2015-September. IEEE Computer Society. 2015. p. 101-105. 7283752 https://doi.org/10.1109/IconSpace.2015.7283752
Buhari, S. M. ; Abdullah, Mardina ; Yokoyama, T. ; Hasbi, Alina Marie ; Otsuka, Y. ; Nishioka, M. ; Bahari, S. A. ; Tsugawa, T. / Climatology of equatorial plasma bubble observed by MyRTKnet over the years 2008-2013. International Conference on Space Science and Communication, IconSpace. Vol. 2015-September IEEE Computer Society, 2015. pp. 101-105
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abstract = "Malaysia Real-Time Kinematics GNSS Network (MyRTKnet) which consists of 78 GPS receivers was used to investigate the occurrence of equatorial plasma bubble (EPB) along 96°E-120°E longitude. In this study, we present the monthly occurrence rate of EPB along the geographical longitudes of 96°E-120°E for a half of solar cycle period (2008-2013). A 2D map of rate of TEC change index (ROTI) projected at 300 km altitude was derived from the signal paths between GPS satellites and the receivers. A ROTI keogram for one day period was obtained from the east-west cross section of the 2D ROTI maps at 4°N for every 5 min. The occurrence day of EPB was determined from the keogram by the existence of ROTI larger than 0.1 TECU/min within the 96°E-120°E longitude. The results show that the occurrence of EPB along the 96°E-120°E has maximum during equinoctial months and is consistent with previous studies. The occurrence rate of EPB during equinoctial months shows similar characteristics in low and high solar activity due to the broad observational coverage of the MyRTKnet. In contrast, the occurrence rate of EPB during solstice months shows significant relation with solar activity. Solstice months recorded high occurrence rate of EPB in high solar activity that might be attributed to post-midnight irregularities.",
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AU - Otsuka, Y.

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AB - Malaysia Real-Time Kinematics GNSS Network (MyRTKnet) which consists of 78 GPS receivers was used to investigate the occurrence of equatorial plasma bubble (EPB) along 96°E-120°E longitude. In this study, we present the monthly occurrence rate of EPB along the geographical longitudes of 96°E-120°E for a half of solar cycle period (2008-2013). A 2D map of rate of TEC change index (ROTI) projected at 300 km altitude was derived from the signal paths between GPS satellites and the receivers. A ROTI keogram for one day period was obtained from the east-west cross section of the 2D ROTI maps at 4°N for every 5 min. The occurrence day of EPB was determined from the keogram by the existence of ROTI larger than 0.1 TECU/min within the 96°E-120°E longitude. The results show that the occurrence of EPB along the 96°E-120°E has maximum during equinoctial months and is consistent with previous studies. The occurrence rate of EPB during equinoctial months shows similar characteristics in low and high solar activity due to the broad observational coverage of the MyRTKnet. In contrast, the occurrence rate of EPB during solstice months shows significant relation with solar activity. Solstice months recorded high occurrence rate of EPB in high solar activity that might be attributed to post-midnight irregularities.

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