Intriguing aspects of low latitude night-time F region irregularities over East and South-East Asia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Generally, the occurrence of F region irregularities associated with Equatorial Plasma Bubbles is considered difficult to predict due to its day-to-day variability. Recent investigation shows that the dominant period of variability of EPB can be >; 25 days (quasi 27 day), presumably associated with solar rotation period. VHF scintillation recorded from Pingtung, Taiwan in 2015 indicated the coexistence of planetary scale variability (4-8 days), 10-15 days variability and quasi 27 day variability. Lomb-Scargle power spectrum of S4 time series indicated that the larger period variability (quasi 27 days) is much more dominant than the other scales (which includes day-to-day variability). Interestingly, the dominant period of S4 variability corresponded exactly with the dominant period of high-latitude geomagnetic variability. Continuous operation of Equatorial Atmosphere Radar (EAR) in 2012 also indicated similar observation. Dominant period of variability of EPB in EAR observations corresponded with the high-latitude geomagnetic variability. These observations reveal that EPB are controlled predominantly by geomagnetic activity through large period variability (quasi- 27 days).

Original languageEnglish
Title of host publication2020 33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789463968003
DOIs
StatePublished - Aug 2020
Event33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020 - Rome, Italy
Duration: 29 Aug 20205 Sep 2020

Publication series

Name2020 33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020

Conference

Conference33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020
Country/TerritoryItaly
CityRome
Period29/08/205/09/20

Fingerprint

Dive into the research topics of 'Intriguing aspects of low latitude night-time F region irregularities over East and South-East Asia'. Together they form a unique fingerprint.

Cite this