IV SAGE - Semana Acadêmica da Geofísica Espacial

SPORADIC E LAYERS EXHIBITING SPREAD ECHOES IN THE SOUTH AMERICAN MAGNETIC ANOMALY: MORPHOLOGY AND DYNAMICS

6 Oct 2026, 10:00

15m

IAI (INPE)

Oral Aeronomy, Ionosphere and Upper Atmosphere Oral Presentations | Apresetações Orais

Speaker

Jaziel Campelo (Instituto Nacional de Pesquisas Espaciais)

Description

Sporadic E (Es) layers are electron density structures typically found between 90 and 130 km altitude. They are composed predominantly of metallic ions and commonly form through wind shear at these heights. This study investigates the dynamical and morphological properties of Es layers exhibiting spread echoes over Santa Maria (RS), a station located within the South American Magnetic Anomaly (SAMA) region. We examine how the vertical extent of spread-Es traces evolves at fixed frequencies, as well as event duration and local time dependence. The analysis uses manually scaled ionograms recorded by the digital ionosonde at Santa Maria during selected spread-Es events.