Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia

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

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The occurrence rate of the equatorial plasma bubble (EPB) with season, solar activity, and geomagnetic conditions are investigated using long-term data sets of Malaysia Real-Time Kinematics Network (MyRTKnet) from 2008 to 2013. The rate of TEC (total electron content) change index (ROTI) in 5 min was derived from MyRTKnet data to detect the EPB with scale sizes around tens of kilometers. Then, the daily east-west cross sections of 2-D ROTI maps were used to examine the EPB features over 100°E–119°E longitudes. The EPBs tend to occur successively in one night along the observational coverage of MyRTKnet during equinoxes in high solar activity years. The perturbations in a form of wavelike structures along the observed longitudes might be responsible for the development of successive EPBs due to high growth rate of the Rayleigh-Taylor instability (RTI) process. On the contrary, the occurrence of successive EPBs is infrequent and the occurrence day of EPB remains active during equinoctial months in low solar activity years. The small growth rate of the RTI process during low solar activity years might require a strong seed perturbation to generate the EPB structure. The occurrence probability of the EPB was found to be similar during quiet and disturbed geomagnetic conditions. The results imply that the strong perturbations play an important role in the development of the EPB in low solar activity years. Nonetheless, the high growth rate of the RTI could cause the successive occurrence of the EPB in high solar activity years.

Original languageEnglish
Pages (from-to)2174-2184
Number of pages11
JournalJournal of Geophysical Research: Space Physics
Volume122
Issue number2
DOIs
Publication statusPublished - 1 Feb 2017

Fingerprint

plasma bubbles
Malaysia
Climatology
climatology
bubbles
Global positioning system
bubble
GPS
solar activity
Plasmas
plasma
occurrences
Taylor instability
kinematics
Kinematics
perturbation
equinoxes
night
Seed
seeds

Keywords

  • equatorial plasma bubble
  • GPS ROTI
  • GPS-TEC
  • ionospheric irregularities

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Ecology
  • Aquatic Science
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia. / Buhari, S. M.; Abdullah, Mardina; Yokoyama, T.; Otsuka, Y.; Nishioka, M.; Hasbi, Alina Marie; Bahari, S. A.; Tsugawa, T.

In: Journal of Geophysical Research: Space Physics, Vol. 122, No. 2, 01.02.2017, p. 2174-2184.

Research output: Contribution to journalArticle

Buhari, SM, Abdullah, M, Yokoyama, T, Otsuka, Y, Nishioka, M, Hasbi, AM, Bahari, SA & Tsugawa, T 2017, 'Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia', Journal of Geophysical Research: Space Physics, vol. 122, no. 2, pp. 2174-2184. https://doi.org/10.1002/2016JA023202
Buhari, S. M. ; Abdullah, Mardina ; Yokoyama, T. ; Otsuka, Y. ; Nishioka, M. ; Hasbi, Alina Marie ; Bahari, S. A. ; Tsugawa, T. / Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia. In: Journal of Geophysical Research: Space Physics. 2017 ; Vol. 122, No. 2. pp. 2174-2184.
@article{bb182b005bb1486186d6372eac730e62,
title = "Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia",
abstract = "The occurrence rate of the equatorial plasma bubble (EPB) with season, solar activity, and geomagnetic conditions are investigated using long-term data sets of Malaysia Real-Time Kinematics Network (MyRTKnet) from 2008 to 2013. The rate of TEC (total electron content) change index (ROTI) in 5 min was derived from MyRTKnet data to detect the EPB with scale sizes around tens of kilometers. Then, the daily east-west cross sections of 2-D ROTI maps were used to examine the EPB features over 100°E–119°E longitudes. The EPBs tend to occur successively in one night along the observational coverage of MyRTKnet during equinoxes in high solar activity years. The perturbations in a form of wavelike structures along the observed longitudes might be responsible for the development of successive EPBs due to high growth rate of the Rayleigh-Taylor instability (RTI) process. On the contrary, the occurrence of successive EPBs is infrequent and the occurrence day of EPB remains active during equinoctial months in low solar activity years. The small growth rate of the RTI process during low solar activity years might require a strong seed perturbation to generate the EPB structure. The occurrence probability of the EPB was found to be similar during quiet and disturbed geomagnetic conditions. The results imply that the strong perturbations play an important role in the development of the EPB in low solar activity years. Nonetheless, the high growth rate of the RTI could cause the successive occurrence of the EPB in high solar activity years.",
keywords = "equatorial plasma bubble, GPS ROTI, GPS-TEC, ionospheric irregularities",
author = "Buhari, {S. M.} and Mardina Abdullah and T. Yokoyama and Y. Otsuka and M. Nishioka and Hasbi, {Alina Marie} and Bahari, {S. A.} and T. Tsugawa",
year = "2017",
month = "2",
day = "1",
doi = "10.1002/2016JA023202",
language = "English",
volume = "122",
pages = "2174--2184",
journal = "Journal of Geophysical Research",
issn = "2169-9380",
publisher = "American Geophysical Union",
number = "2",

}

TY - JOUR

T1 - Climatology of successive equatorial plasma bubbles observed by GPS ROTI over Malaysia

AU - Buhari, S. M.

AU - Abdullah, Mardina

AU - Yokoyama, T.

AU - Otsuka, Y.

AU - Nishioka, M.

AU - Hasbi, Alina Marie

AU - Bahari, S. A.

AU - Tsugawa, T.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - The occurrence rate of the equatorial plasma bubble (EPB) with season, solar activity, and geomagnetic conditions are investigated using long-term data sets of Malaysia Real-Time Kinematics Network (MyRTKnet) from 2008 to 2013. The rate of TEC (total electron content) change index (ROTI) in 5 min was derived from MyRTKnet data to detect the EPB with scale sizes around tens of kilometers. Then, the daily east-west cross sections of 2-D ROTI maps were used to examine the EPB features over 100°E–119°E longitudes. The EPBs tend to occur successively in one night along the observational coverage of MyRTKnet during equinoxes in high solar activity years. The perturbations in a form of wavelike structures along the observed longitudes might be responsible for the development of successive EPBs due to high growth rate of the Rayleigh-Taylor instability (RTI) process. On the contrary, the occurrence of successive EPBs is infrequent and the occurrence day of EPB remains active during equinoctial months in low solar activity years. The small growth rate of the RTI process during low solar activity years might require a strong seed perturbation to generate the EPB structure. The occurrence probability of the EPB was found to be similar during quiet and disturbed geomagnetic conditions. The results imply that the strong perturbations play an important role in the development of the EPB in low solar activity years. Nonetheless, the high growth rate of the RTI could cause the successive occurrence of the EPB in high solar activity years.

AB - The occurrence rate of the equatorial plasma bubble (EPB) with season, solar activity, and geomagnetic conditions are investigated using long-term data sets of Malaysia Real-Time Kinematics Network (MyRTKnet) from 2008 to 2013. The rate of TEC (total electron content) change index (ROTI) in 5 min was derived from MyRTKnet data to detect the EPB with scale sizes around tens of kilometers. Then, the daily east-west cross sections of 2-D ROTI maps were used to examine the EPB features over 100°E–119°E longitudes. The EPBs tend to occur successively in one night along the observational coverage of MyRTKnet during equinoxes in high solar activity years. The perturbations in a form of wavelike structures along the observed longitudes might be responsible for the development of successive EPBs due to high growth rate of the Rayleigh-Taylor instability (RTI) process. On the contrary, the occurrence of successive EPBs is infrequent and the occurrence day of EPB remains active during equinoctial months in low solar activity years. The small growth rate of the RTI process during low solar activity years might require a strong seed perturbation to generate the EPB structure. The occurrence probability of the EPB was found to be similar during quiet and disturbed geomagnetic conditions. The results imply that the strong perturbations play an important role in the development of the EPB in low solar activity years. Nonetheless, the high growth rate of the RTI could cause the successive occurrence of the EPB in high solar activity years.

KW - equatorial plasma bubble

KW - GPS ROTI

KW - GPS-TEC

KW - ionospheric irregularities

UR - http://www.scopus.com/inward/record.url?scp=85012890479&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012890479&partnerID=8YFLogxK

U2 - 10.1002/2016JA023202

DO - 10.1002/2016JA023202

M3 - Article

AN - SCOPUS:85012890479

VL - 122

SP - 2174

EP - 2184

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 2169-9380

IS - 2

ER -