English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Conference Paper

Extreme space weather events triggered by Tonga volcano eruption during geomagnetically disturbed conditions

Authors

Rajesh,  P. K.
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Charles,  Lin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Jia-Ting,  Lin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Chen,  Shih-Ping
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Lin,  Chi-Yen
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Liu,  Jann-Yenq
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Chou,  Ming Yan
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Yue,  Jia
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Rajesh, P. K., Charles, L., Jia-Ting, L., Chen, S.-P., Lin, C.-Y., Liu, J.-Y., Chou, M. Y., Yue, J. (2023): Extreme space weather events triggered by Tonga volcano eruption during geomagnetically disturbed conditions, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4051


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021491
Abstract
The Tonga volcano eruption on 15 January 2022, during the recovery phase of a moderate geomagnetic storm, triggered extreme plasma bubble (EPB) activity across the globe. This study examines this rare space weather event triggered by a volcano eruption by using ground-based Global Navigation Satellite System (GNSS) total electron content (TEC) measurements, and in situ ion density observations by ion velocity meter (IVM) onboard the FORMOSAT-7/COSMIC-2 (F7/C2) satellites. Though EPBs occurred over a wide range of longitudes, the IVM and rate of TEC index (ROTI) observations over the Asia-Pacific region (100-150°E) revealed super plasma bubbles, expanding to geomagnetic latitudes beyond 30°, attaining apex altitudes over 3000 km. This was preceded by an unusually strong pre-reversal enhancement (PRE) revealed by the global ionosphere specification (GIS) electron density profiles constructed by using the F7/C2 radio occultation (RO) and ground based GNSS slant TECs. The GIS further revealed sharp decrease of equatorial ionization anomaly (EIA) crest density due to the storm impact. The combined effects of the enhanced F-region wind over EIA by the negative storm and the perturbations induced by the volcano eruption intensified the PRE, elevating the F-peak to altitudes above 450 km. This provided suitable conditions for super plasma bubbles over the Asia-Pacific region, where the Lamb wave induced perturbations over the equator overlapped with the period of intense PRE. Over further western longitudes, the arrival of Lamb wave progressively lagged the terminator, resulting in less intense EPB activity, with much weaker or no EPBs over the Euro-African region.