Equatorial plasma bubbles (EPBs) have been a longstanding and increasingly important subject because they cause severe scintillations in radio waves from Global Navigation Satellite System satellites. The phenomenon was found in the 1930s as irregular ionosonde observations and was termed equatorial spread F (ESF). ESF is interpreted as plasma density irregularities associated with EPBs that ha...

Lymphatic filariasis (LF) is targeted for worldwide elimination. In Yemen, all mainland implementation units met the WHO criteria for stopping mass drug administration (MDA) after 5 rounds. However, in Socotra Island these criteria were not met. Our study evaluated the efficacy of applying expanded polystyrene beads (EPBs) on the Culex population and the effect on LF transmission. Human and mos...

OBJECTIVE In this study, it was aimed to investigate the agreement between early phase of bone scintigraphy - human immunoglobulin scintigraphy (EPBS-HIG) and late phase bone scintigraphy - HIG (LPBS-HIG) in the determination of the presence and also the severity of inflammatory arthritis. MATERIAL AND METHODS Twenty-eight patients (23 female, 5 male; between 19 to 80 years of age) with infla...

Here we give two examples of low-latitude plasma blobs accompanied by linearly polarized perpendicular magnetic deflections which imply that associated field-aligned currents (FACs) have a 2-D sheet structure located at the blob walls. The estimated FAC density is of the order of 0.1 μA/m2. The direction of magnetic deflections points westward of the magnetic meridian and there is a linear corr...

The Hunga–Tonga volcano eruption at 04:14:45 UT on 15 January 2022 produced various waves propagating globally, disturbing the background atmosphere and ionosphere. Coinciding with arrival of perturbation waves, several equatorial plasma bubbles (EPBs) were consecutively generated post-sunset hours over East/Southeast Asian region, largest extension to middle latitudes. These EPBs caused intens...

The equatorial plasma bubble (EPB) phenomenon is an important component of space weather as the ionospheric irregularities that develop within EPBs can have major detrimental effects on operation satellite-based communication and navigation systems. Although name suggests occur in ionosphere, nature instability gives rise to such bubbles may extend over a large part global ionosphere between ge...

In this study we make use of the Swarm counter-rotation constellation for estimating typical scale length post-sunset equatorial plasma bubbles (EPBs) along fluxtubes. The close approaches between spacecraft near equator occurred in September and October 2021, covering magnetic local time from 19:00 to 23:00, which is favorable occurrence EPBs. It first show quasi-simultaneously samplings by A/...

Abstract Prediction of equatorial plasma bubbles (EPBs) continues to be a challenge for the scientific community. We present novel data analysis approach, employed on collocated radar and ionosonde observations from Gadanki, providing new experimental results characterizing overhead upwelling bottomside F layer linking it EPB formation. Using this approach we propose parameter based predict occ...

This study reports different properties of ionospheric perturbations detected to the west and south Korean Peninsula after Hunga-Tonga volcanic eruption on 15 January 2022. Transient wave-like total electron content (TEC) modulations intense irregular TEC are in Peninsula, respectively, about 8 hr eruption. The propagate away from epicenter with a speed 302 m/s. Their occurrence time, propagati...

Electron density irregularities in the equatorial ionosphere at night are understood terms of plasma bubbles, which produced by transport low-density from bottomside F region to topside. Equatorial bubbles (EPBs) have been detected various techniques on ground and space. One distinguishing characteristics EPBs identified long-term observations is systematic seasonal longitudinal variation EPB a...