Detection of Different Properties of Ionospheric Perturbations in the Vicinity of the Korean Peninsula After the Hunga‐Tonga Volcanic Eruption on 15 January 2022
Abstract
This study reports different properties of ionospheric perturbations detected to the west and south of the Korean Peninsula after the Hunga‐Tonga volcanic eruption on 15 January 2022. Transient wave‐like total electron content (TEC) modulations and intense irregular TEC perturbations are detected in the west and south of the Korean Peninsula, respectively, about 8 hr after the eruption. The TEC modulations in the west propagate away from the epicenter with a speed of 302 m/s. Their occurrence time, propagation direction and velocity, and alignment with the surface air pressure perturbations indicate the generation of the TEC modulations by Lamb waves generated by the eruption. The strong TEC perturbations and L band scintillations in the south are interpreted in terms of the poleward extension of equatorial plasma bubbles (EPBs). We demonstrate the association of the EPBs with the volcanic eruption using the EPB occurrence climatology derived from Swarm satellite data.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 19, 2022
- Source ID
- 10.1029/2022gl099163
Entities
People
- Byung-Kyu Choi
- Hyosub Kil
- Junseok Hong
- Larry J. Paxton
- Woo Kyoung Lee
- Young-Sil Kwak
Organizations
- Johns Hopkins University
- Korea Astronomy and Space Science Institute
- Korea University of Science and Technology
- National Science Foundation
- United States Air Force