The 2021 volcanic eruption in La Palma Island and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R, and GNSS-RO

• DOI: 10.5194/egusphere-2022-1089
• Publication Date: 2022-11-11T12:36:03Z
• Authors: Carlos Molina; Badr-Eddine Boudr...; Hyuk Park; Adriano Camps
• Keywords: Interplanetary scintillation

Abstract. Ionospheric disturbances induced by seismic activity have been studied in the last years many authors, showing an impact both before and after occurrence of earthquakes. In this study, ionospheric scintillation produced 2021 La Palma volcano eruption is analyzed. The "Cumbre Vieja" was active from September 19th to December 13th, 2021, magnitude 3–4 earthquakes were recorded, with some them reaching 5. study three methods: GNSS reference monitoring, Reflectometry (GNSS-R) NASA CYGNSS, Radio Occultation (GNSS-RO) COSMIC Spire constellations, are used, allowing us compare evaluate their performance same conditions. To scintillation, earthquakes’ generated energy, percentile 95 % intensity parameter (S4), measurements computed every 6 h intervals for whole duration volcanic eruption. GNSS-RO has shown best correlation between energy S4, values up 0.09 when perturbations occur around 18 activity. monitoring stations data also shows 7–8 days after. As expected, GNSS-R one that smallest correlation, as signatures get masked signature surface where reflection taking place. Additionally, expected well, methods show a smaller during week