The Growth and Decay of Intense GNSS Amplitude and Phase Scintillation During Non-Storm Conditions.

ABSTRACT: A multi-instrument study is conducted at the dayside polar ionosphere to investigate the spatio-temporal evolution of scintillation in Global Navigation Satellite System (GNSS) signals during non-storm conditions. Bursts of intense amplitude and phase scintillation started to occur at ∼ 9 MLT and persisted for more than 1 hour implying the simultaneous existence of Fresnel and large-scale sized irregularities of significant strength in the pre-noon sector. Measurements from the EISCAT radar in Svalbard (ESR) revealed the presence of dense plasma structures with significant gradients in regions of strong Joule heating/fast flows and soft precipitation when scintillation was enhanced. Plasma structuring down to Fresnel scales were observed both in the auroral oval as well as inside the po

SUBMITTER: Madhanakumar M 

PROVIDER: S-EPMC11607637 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature